Pressed Beargrass (Xerophyllum tenax)
© 2018 by Kristopher K. Townsend. Permission to use granted under the Creative Commons Attribution-Share Alike 4.0 International license.
This beargrass specimen was collected by the photographer on the Lolo Trail in the area that the Corps descended into Hungery Creek. The blotting paper is similar to the paper Lewis used in the field.
Specimen Presses
A botanist presses specimens of plants for study and comparison with other specimens of similar species that have been gathered at different times and places, worldwide. Meriwether Lewis knew that his studies in the field would be backed up by the most prominent cabinet—that is, laboratory—botanists of his day.
Among them was to be Frederick Pursh (1774-1820), a German botanist whom Lewis hired at Philadelphia in May of 1807, paying him a total of seventy dollars to assist him in preparing his collection for a planned but never written publication of his own.[1]Jackson, Letters, passim. Pursh examined 124 of Lewis’s specimens, verified or corrected Lewis’s descriptions, wrote many new “diagnoses,” and assigned names to the species that were new to science.[2]It is estimated that seventy or seventy-five specimens were new to science when Lewis collected them. Pursh honored Lewis by naming four new species after him: Linum lewisii (LEE-noom … Continue reading He also painted water colors of thirteen of those, and in 1814 included them all in his two-volume Flora Americae Septentrionalis (FLO-ruh a-MAY-ree-kay sep-TEN-tree-oh-NAL-iss; Plants of North America).
Botanical Collector
A botanical collector like Meriwether Lewis had to begin the process of preserving his specimens as soon as possible after picking them, to forestall wilting and shriveling. The field botanist must place the leaves, stems, flowers, fruits, and roots on sheets of mounting paper with the utmost care and foresight. The whole point is to preserve every specimen in a way that will enable the cabinet botanist to examine minute details that will facilitate the writing of a definitive analysis of each specimen. Immediately, each mount must be covered with a sheet of soft, loose-textured, highly absorbent bibulous (Latin for “drinking”) or “blotter” paper, in order to draw all moisture out of the specimen. In some cases a discreet dissection may be necessary to provide maximum value to the collection. A memorandum is added containing the date and place the specimen was found, perhaps with a very brief description including known uses of the plant, and the collector’s name. Stacks of specimen mounts and blotter papers are weighted down or tied together tightly, then monitored frequently until the drying is complete.
The Corps of Discovery’s Lewis was a conscientious field botanist. The collector must monitor the drying process carefully including daily awareness of ambient temperature and humidity to be sure the specimens remain intact and free from mold or decay and to guard against invading insects. If possible, the specimen must be exposed occasionally to warm sunlight and dry air. This must have been a serious challenge to Lewis under the field conditions he endured from day to day. It certainly was at Fort Clatsop, where the average daily humidity probably ranged from 70 to 90 percent, and it rained all but six days between their arrival at the coast and their departure on 23 March 1806. In short, until the specimens are deposited in a secure collection facility known as a herbarium, botanizing is a tedious, time-consuming procedure which demands close, periodic attention.
Sensory Observations
Even on the toughest days of the expedition, Lewis somehow found time to observe plants along the way. However, his major periods of systematic work evidently were at Fort Mandan, Fort Clatsop, and Long Camp.
The total number of specimens he collected is not known, but it is certain that all those he acquired between Fort Mandan and the Great Falls of the Missouri were destroyed when high water in the spring of 1806 flooded the underground cache where they had been stored. Some more went astray after the expedition was over; others were eventually destroyed by beetles. For many years the collection was scattered and generally ignored. Not until 1896 were most of the known sheets assembled in one collection at the Academy of Natural Sciences in Philadelphia, and not until 1966 was it subjected to a comprehensive, detailed study.[3]That study, still a major milestone in the literature, is Paul Russell Cutright’s Lewis and Clark, Pioneering Naturalists (Lincoln: University of Nebraska Press, 1969).
Also, we don’t know precisely what methods or materials Lewis used to preserve plant specimens. He might have used presses such as the one pictured here on the previous page, or else books of blotting paper and blank sheets. We do know that all the existing specimens have been remounted at some time in the past two hundred years, and that of the 226 botanical sheets now in the Lewis and Clark Herbarium at the Academy only 34 have their original labels in Lewis’s handwriting.
The process of pressing specimens preserves only the outlines, textures and skeletal structures of plants, so Lewis also took pains to write notes about their colors and tactile qualities, and often the aromas and flavors. Thus it is possible, by reading his often minutely detailed journal entries about plants, to appreciate the full scope and intensity of his concentration, the breadth of his awareness, and depth of his curiosity.
Meriwether Lewis made every step of the journey with all of his senses working all of the time. So, of course, did his co-captain and their men, so far as we can tell. The lessons of the Lewis and Clark Expedition are less about adventure, conquest, or commerce, than about concentration and awareness. These are particularly important values to cultivate in this age when most of us are artificially over-stimulated during almost every moment of our waking hours.
Related Pages
May 8, 1806
An argument about horses
On the Camas plains high above the Clearwater River, Twisted Hair and Cutnose argue about the expedition’s horses. Lewis describes the Nez Perce methods of extracting foods from the ponderosa pine.
Lewis reported that a specimen of this plant “was taken the 1st of June at the mouth of the Osage River; it is known in this country by the name of the wild ginger.”
May 20, 1806
Snow and violent rains
Labiche brings in a mule deer and reports snow in the higher plains. The men have traded all their brass buttons for food, and Lewis prepares a specimen of Wilcox’s beardtongue, Penstemon wilcoxii.
April 15, 1806
Return to Fort Rock
While paddling up the Columbia, the 33 members see many horses but are unsuccessful in trading for any. They encamp at Fort Rock at present The Dalles, Oregon. Lewis prepares four plant specimens.
September 5, 1804
No Preserve Island
After making 13¾ miles, the boats stop early at what they name No Preserve Island to make a new cedar mast for the barge. Lewis describes the bull snake and adds two plants to his collection.
July 9, 1805
Sinking the iron-framed boat
The iron-framed boat is too leaky, and it is intentionally sunk. The captains plan to build two new dugout canoes, and Lewis collects a specimen of blue flax—new to science and a namesake species.
April 16, 1806
"Great Mart of all this Country"
Clark crosses the river to trade for horses and calls The Dalles of the Columbia the “Great Mart of all this Country.” At Fort Rock, the men make saddles, Lewis botanizes, and Cruzatte plays the fiddle.
June 16, 1806
Return to Horsesteak Meadow
On the Northern Nez Perce Trail, fallen trees slow progress while deeper and deeper snowbanks appear. They encamp where Clark had shot a stray horse last fall. Lewis prepares two plant specimens.
Lewis mentioned two species of tobacco, possibly Nicotiana quadrivalvis and N. rustica—a Mexican species called Aztec tobacco—that the Arikara cultivated.
June 10, 1806
Leaving Long Camp
After a nearly 6-week stay at Long Camp waiting for mountain snows to melt, the expedition travels to the “quawmash flatts”—Weippe Prairie, Idaho. Lewis botanizes and taste-tests Columbian ground squirrel.
September 19, 1804
The Sioux Pass
The winds are favorable and the hunting good. Clark explores the Sioux Pass of the Three Rivers, and Lewis adds broom snake weed to his plant collection. Camp is near present Lower Brule, South Dakota.
October 18, 1804
Passing the Cannonball
In passing the Cannonball River in present North Dakota, a ‘cannon ball’ is selected as a new anchor. Clark learns that most Arikaras avoid liquor, and Lewis adds prairie wild rose to his plant collection.
October 16, 1804
"Goat" hunting
The expedition struggles 14 river miles between present Fort Yates and Beaver Creek in North Dakota. Some Arikaras hunt pronghorn, and Lewis adds common poorwill and creeping juniper to his collection.
Lewis collected a specimen of bitter cherry, Prunus emarginata, while at Long Camp on 29 May 1806 and described it on 7 June 1806. He wrote that “the natives count it a good fruit”.
September 12, 1804
Troublesome Island
In present South Dakota, the barge nearly turns over. They then head up the wrong side of Troublesome Island and must turn back. Lewis adds two plants to his collection.
October 4, 1804
Turn around
The day begins by dropping back three miles to a better channel. They avoid the Sioux along the banks, and camp across from an abandoned Arikara village near present Forest City, South Dakota.
Lewis and Clark sometimes called it kinnikinnick, sometimes sacacommis. At Fort Clatsop on 29 January 1806, he described this useful plant.
The Academy’s monumental collection of scientific specimens includes the Lewis and Clark Herbarium, consisting of most of the botanical specimens the Expedition brought back East.
May 29, 1804
A lost hunter
The expedition spends most of the day at the mouth of the Gasconade River drying goods and waiting for Joseph Whitehouse to return from a hunting trip. Lewis prepares a plant specimen of Golden Seal.
May 17, 1806
Lewis's wet chronometer
After a wet night, the day continues with rain at Long Camp and snow in the hills at present Kamiah, Idaho. Lewis prepares a lily plant specimen, and they hope to cross the Rocky Mountains soon.
April 19, 1805
Grounded by winds
The wind being high, the captains decide to remain another day at their present camp below present Williston, North Dakota. Lewis describes the area’s beaver and collects a specimen of creeping juniper.
July 15, 1804
Treeless plains
After waiting for the Missouri River fog to lift, the expedition sets out at 7 am and encamps near present Nemaha, Nebraska. Lewis’s chronometer stops, and he collects a specimen of hedge bindweed.
William Clark first mentioned the root cous on 1 November 1805, saying that native people living near the future Bonneville Dam site traded beads to obtain it from people up the Columbia River. To Clark, it was “cha-pel-el bread.”
On 25 June 1806, on the branch of Hungery Creek where they “nooned it,” Sacagawea brought the captains “a parcel of roots” that Lewis immediately recognized as the kind Drouillard had given him ten months earlier.
July 20, 1804
Drouillard is sick
The expedition passes Water-which-Cries and Waubonsie creeks along the present Nebraska and Iowa border. Lead hunter George Drouillard is sick, and Lewis collects two specimens of clover.
November 17, 1805
A disappointing cape
At Station Camp, Clark trades with some Chinooks and gathers volunteers to visit the Pacific Ocean tomorrow. Lewis returns from Cape Disappointment without finding any ships.
June 9, 1806
Falling river, rising hopes
At Long Camp, everything is ready for tomorrow’s move to Weippe Prairie. The falling river gives hope that the mountain snows have melted, and Lewis collects a Varileaf Phacelia specimen—new to science.
During the winter of 1807-1808, Pursh lived at the home of Bernard McMahon in Philadelphia. Here he worked on the drawings and descriptions of Lewis’s western plants.
October 3, 1804
Mice problems
The captains discover that mice are eating their corn, paper, and cloth. Lewis adds pasture sagewort and long-leaved sagewort to his plant collection, and they camp near present Sutton Bay in South Dakota.
April 12, 1805
Little Missouri River
Early in the day, a crumbling bank threatens the red pirogue. They spend most of the day at the Little Missouri River and see beaver, empty Assiniboine camps, creeping juniper, and wild onions.
September 4, 1804
Shannon still missing
They pass an old Ponca village and make eight miles before stopping at the Niobrara River to explore, hunt, and look for signs of Pvt. Shannon who has been missing several days.
May 7, 1806
Over Angel Ridge
The expedition crosses the Clearwater River and climbs present Angel Ridge where they see the “spurs” of the Rocky Mountains still covered in snow. They camp at “Musquetoe” Creek.
Columbia plateau biscuitroots: “one of the grateful vegetables” by naturalist Jack Nisbet. An Indian food source for thousands of years.
August 27, 1804
Yankton Sioux visitors
Reaching present Yankton, South Dakota, they set a fire to signal the Sioux to a council. A Yankton man and two boys arrive. Drouillard fails to find Pvt. Shannon who hasn’t returned from a hunting trip.
August 25, 1804
Spirit Mound
The captains take a large party to explore Spirit Mound. Instead of finding its rumored devils, they suffer from excessive heat and witness birds eating swarms of flying ants.
July 27, 1804
Leaving White Catfish Camp
At White Catfish Camp, the boats are loaded, and they proceed to present Lewis and Clark Landing in Omaha, Nebraska. A knee is cut, mosquitoes rage, and Lewis adds several plants to his collection.
The day Sacagawea gathered Indian breadroot, Lewis wrote a detailed ethnobotanical description. The specimen he prepared a year prior is now used as the primary identifier of the species.
April 14, 1806
Romantic scenes
In a calm stretch below present Lyle, Washington, Lewis enjoys romantic scenes and a drier climatic zone; and he prepares four plant specimens. The captains are encouraged to see residents with horses.
October 2, 1804
Caution Island
Near present Willow Creek Bay, South Dakota, the expedition anticipates an attack by the Lakota Sioux, and everyone is prepared for action. Lewis adds three specimens to his plant collection.
Before signing off in his last journal entry, Lewis had to botanize one last time. He concludes with an accurate description of the pin cherry, Prunus pensylvanica.
May 27, 1804
Gasconade River
The flotilla meets two trading parties coming down from Omaha and Osage villages. At evening camp near the mouth of the Gasconade River in present Missouri, arms and ammunition are inspected.
August 17, 1804
Otoe chiefs and a deserter
At Fish Camp near present Homer, Nebraska Pvt. Labiche informs the captains that three Otoe chiefs and the deserter Pvt. Reed will soon arrive. A prairie fire is set as a signal to any nearby Indians.
“The prickly pear is now in full blume,” he wrote on a mild early-summer day in 1805, “and forms one of the beauties as well as the greatest pests of the plains.”
June 1, 1806
Clarkia and rough wallflower
Clark mentions a plan to divide forces after reaching Travelers Rest, and Drouillard is sent to find Nez Perce men to guide them. Lewis discusses the Clarkia flower and prepares two more plant specimens.
August 1, 1804
A botanist's field day
At present Fort Atkinson, Nebraska, Clark prepares a peace pipe anticipating that the Otoes will soon arrive for a council. Two men search for lost horses and others search for the Otoes.
June 15, 1806
The Small Prairie
The men gather horses, and the expedition leaves the Weippe Prairie at 10 am. After lunch at last year’s Pheasant Camp, they continue to the Small Prairie on a slippery trail cluttered with fallen trees.
September 8, 1804
Truteau's old trading house
With favorable winds, the boats make 17 miles up the Missouri. They pass Jean Baptiste Truteau’s old trading house, and they are now entirely within present South Dakota. Pvt. Shannon is still missing.
Everybody liked the abundant serviceberry fruit—the Lemhi Shoshones were living on them, the enlisted men “regaled themselves,” and Lewis was the first to collect a specimen for science.
August 27, 1806
Hunting on the Big Bend
While passing through the Big Bend of the Missouri, the expedition nearly runs out of meat. They hear bison bellowing and stop to hunt. Lewis collects a plant specimen, but aggravates his gunshot wound.
September 15, 1804
The White River
Moving up the Missouri below present Oacoma, South Dakota, the expedition passes the creek where Shannon had waited to be rescued. Gass and Reubin Field spend the night twelve miles up the White River.
July 13, 1804
Favorable winds
Favorable winds push the boats over twenty miles up the Missouri River. They encamp west of Corning, Missouri. Lewis collects a specimen of white sage, but otherwise the day appears uneventful.
May 29, 1806
The Snake River fishery
At a village of salmon fishers, Pvt. Robert Frazer trades his razor for two Spanish dollars. At Long Camp, Lewis describes the short-horned lizard and prepares four plant specimens—all new to science.
April 1, 1806
Exploring the 'Quicksand' River
At Provision Camp, Pryor’s detachment explores the Quicksand River—the present Sandy in Oregon. Visiting Indians of various Nations warn of no food upriver, and no salmon for another month.
October 1, 1805
The Nez Perce method
At Clearwater Canoe Camp near present Orofino, Idaho, the men employ the Nez Perce method of hollowing out dugout canoes with fire. Lewis adds a specimen of ponderosa pine to his plant collection.
September 1, 1804
Leaving Calumet Bluff
The expedition leaves the Yankton Sioux and reaches Bon Homme island, now inundated behind Point Gavins Dam. Several catfish are caught, and Lewis collects a specimen of wild four-o’clock.
October 1, 1804
The Cheyenne River
At the Cheyenne River, the captains meet trader Jean Vallé who tells them about that river. Clark finds that buffaberries make a delightful tart, and Lewis adds three specimens to his plant collection.
This variety of the common chokecherry gave Lewis his decoction of simples and was the subject of his botanical scrutiny.
July 18, 1804
Geology and botany
Clark remarks on the region’s geology and Lewis collects a partridge pea specimen as they travel up the Missouri below present Nebraska City. At their evening camp, a stray Indian dog is fed.
September 27, 1805
Falling trees for canoes
At the Clearwater Canoe Camp near present Orofino, Idaho, they chop down five large ponderosa pine trees and canoe-building begins. Pvt. Colter finds one of the horses lost on the Northern Nez Perce Trail.
May 25, 1804
Last 'White' village
The expedition reaches La Charrette—the last settlement of “white people on this River . . . .” Here the captains meet trader Régis Loisel who shares valuable information about where they are going.
June 16, 1804
Unwanted passengers
The men use ropes to pull the barge against a current full of roiling sand making camp near present Waverly, Missouri late in the day. Clark says that the mosquitoes and ticks are numerous and bad.
August 2, 1804
The Otoes arrive
At sunset near present Fort Atkinson, Nebraska, several Otoes arrive at Council Bluff. Guns are fired and hands shaken. Lewis collects a specimen of snowberry or buckbrush and examines a great egret.
Important for the history of the scientific accomplishments of the expedition, its first plant specimens were consigned to Barton’s care. Here began the disassembling of the collection, and his promised volume on natural history was never written.
Because it appears in the Rockies at the edges of receding snowbanks it has also earned the name glacier lily. Lewis’s specimen, collected 15 June 1806 on the Clearwater River, was the one used by Pursh to describe the species.
Douglas recognized landmarks from Vancouver’s and William Clark’s maps as soon as he sighted Cape Disappointment at the Columbia River’s fearsome bar. The collector continued to name familiar sentinels as he moved inland including “Mount Jefferson of Lewis and Clarke.”
There is a great abundance of a species of bear-grass which grows on every part of these mountains,” wrote Lewis on 15 June 1806. “It’s growth is luxouriant and continues green all winter but the horses will not eat it.”
Lewis collected buffaloberry specimens which were new to science and Clark had them in a delightful tart. Native Americans had been eating the bright red berries for generations.
May 10, 1804
First plant specimen
At winter camp on the present Wood River in Illinois, the enlisted men are ordered to carry 100 lead balls for their rifles. In St. Louis, Lewis collects the expedition’s first plant specimen.
This interview with botany Professor James Reveal recorded at Packer Meadow near Lolo Pass analyzes the botany of Lewis.
June 5, 1806
Long Camp grasses
A Nez Perce man reports that he was unable to cross the Bitterroot Mountains due to snow and toddler Jean Baptiste is given a new medical treatment. Lewis describes Long Camp area grasses and plants.
June 3, 1804
Mosquitoes and ticks
At the mouth of the Osage, mosquitoes and deer ticks vex Clark, and Lewis collects a specimen of ground plum. Late in the day, the boats move up to the mouth of the Moreau east of present Jefferson City.
May 30, 1804
Another fourteen miles
Lost hunter Joseph Whitehouse and his boat and crew of engagés join the main group late at night. In the morning, Clark records the incident. Lewis collects a specimen of River-bank grape, Vitis riparia.
August 10, 1806
Sketches of River Rochejhone
Lewis has the boats repaired while he botanizes. In the afternoon, they move a few miles closer to Clark’s camp near present Tobacco Garden, North Dakota. There, Clark works on his maps of the Yellowstone.
July 1, 1806
Plan to divide forces
The captains describe their plan to take different routes the Knife River villages. The Nez Perce guides agree to show Lewis the “Road to the Buffalo,” and he prepares several plant specimens.
Its oak-strong, hickory-tough wood made powerful, reliable hunting bows. Early French explorers and traders translated its Indian name into bois d’arc,–”wood for a bow,” which was easily anglicized into “bodark.”
Justified by the ethnobotanical record, the captains went to unusual lengths to preserve and document echinacea. Most—if not all—the Tribal Nations encountered along the Missouri River used the plant to treat snakebites in the manner described by the two captains.
June 12, 1806
The beautiful Weippe Prairie
At Weippe Prairie in present Idaho, the expedition waits for the Bitterroot Mountain snow to melt. The warmer weather brings mosquitoes and camas blooms. Lewis collects two more plant specimens.
August 4, 1804
Moses Reed is missing
The expedition travels 15 miles and encamps southwest of present Modale, Iowa. The captains record yesterday’s speech to the Otoes, and Pvt. Moses Reed, who left to retrieve his knife, does not return.
The plant’s common names include elkhorn, ragged robin, pink fairy, and deerhorn. In the spring of 1807 Lewis turned over his plant specimens to Frederick Pursh, who gave this flower the scientific name Clarkia pulchella
September 21, 1804
Camp washes away
At the Big Bend of the Missouri, the men barely escape as the sandbar they are camping on washes into the river. They continue up the Missouri camping near present Joe Creek Bay, South Dakota.
November 16, 1805
A break in the weather
A break in the weather at Station Camp enables the main party to dry gear. Sgt. Gass reflects on reaching the end of their voyage, and Lewis adds Oregon boxleaf to his plant collection.
William Clark, pushing on in advance of the hungry men of the Corps, came upon two adjacent Indian villages totaling about 30 lodges on Weippe Prairie. They gave him and his six hunters “roots in different States, Some round and much like an onion which they call quamash.”
September 2, 1804
Passing Bon Homme Island
Below present Springfield, South Dakota, the boats navigate around a large island with numerous elk. They describe unusual sand ridges which appear as Indian fortifications, and Lewis collects plants.
May 22, 1804
Trading with Kickapoo hunters
After a very rainy night, the expedition sets out at 6 am, travels 18 miles, and camps near the mouth of the Femme Osage River in present-day Missouri. They trade with some Kickapoos for four deer.
The Woodlands
Repository of plant specimens
by Catharine P. Fussell, Joseph A. Mussulman, Timothy Preston Long
Lewis sent plant specimens to William Hamilton who cultivated them in his garden at The Woodlands outside of Philadelphia.
May 6, 1806
Three Coeur d'Alenes
The expedition spends most of the day at the Potlatch River—their Colter’s Creek. Lewis meets three Coeur d’Alene Indians, and Clark gives medical aid. They eventually move to another Nez Perce village.
September 3, 1805
The Lost Trail
The expedition climbs the divide between the North Fork Salmon and Bitterroot Rivers near present Lost Trail Pass. In a mix of rain, snow, and sleet, they spend the night “wet hungry and cold.”
September 2, 1805
Leaving the Indian road
Against the advice of guide Toby, they continue up the North Fork Salmon River. Without an Indian road, they pass through thick brush, a “dismal swamp” and the horses stumble crossing rocky hillsides.
In his journal for 12 February 1806, Lewis described the plant that now goes by the name Berberis aquifolium, which he had first noticed in the vicinity of the Cascades of the Columbia River, about 145 miles from the ocean.
November 1, 1805
A day with the Watlalas
Most of the men move baggage and canoes around the Cascades of the Columbia. Clark describes the Upper Chinookan Watlala People living in the area, and Lewis adds Pacific madrone to his plant collection.
July 30, 1804
Council Bluff arrival
The expedition arrives at a bluff at present Fort Atkinson, Nebraska where they intend hold a council with the Otoes. Pvt. J. Field kills a badger, and Lewis preserves it as his first zoological specimen.
June 1, 1804
Mouth of the Osage
After a hard day, the expedition stops at the mouth of Osage River where the captains make celestial observations late into the night. Lewis also collects a specimen of wild ginger, Asarum canadense.
January 20, 1806
Five plant specimens
At Fort Clatsop, Lewis prepares five new plant specimens and describes roots eaten by local Chinookan Peoples. The captains worry about the rate at which they are going through their supply of elk.
September 18, 1804
Coyote specimen
The hunters do well, so they stop early above present Chamberlain, South Dakota to jerk meat. Lewis sees the first sign of fall and makes a specimen of coyote, Missouri milkvetch, and tall blazing star.
August 10, 1804
Blackbird Hill in view
The boats sail 22½ miles up the Missouri River, and they encamp within view of Blackbird Hill. Lewis collects the earliest plant specimen that survives today, field horsetail.
Flathead Salish, Kutenai, Shoshoni, and Nez Perce people all regard the bitterroot with solemn reverence. No other root may be harvested until the elder women of the tribe have conducted the annual First Roots ceremony.
June 14, 1804
Gobbling snakes
The morning is foggy as the boats leave the Grand River, and they make only eight miles up the Missouri. They meet four traders loaded with furs, and Drouillard hears snakes that gobble like turkeys.
June 25, 1806
Jerusalem Artichoke Camp
The expedition follows the Northern Nez Perce Trail to Hungery Creek. The captains fear the Nez Perce guides have left them, and Sacagawea gathers roots resembling the Jerusalem artichoke.
Notes
| ↑1 | Jackson, Letters, passim. |
|---|---|
| ↑2 | It is estimated that seventy or seventy-five specimens were new to science when Lewis collected them. Pursh honored Lewis by naming four new species after him: Linum lewisii (LEE-noom loo-WEE-see-eye; Lewis’s wild flax), Mimulus lewisii (MIM-oo-luss loo-WEE-see-eye; Lewis’s monkey flower), Philadelphus lewisii (fill-uh-DELL-fuss loo-WEE-see-eye; Lewis’s syringa–si-RING-guh); and Lewisia rediviva (reh-dee-VEE-vuh; bitterroot). |
| ↑3 | That study, still a major milestone in the literature, is Paul Russell Cutright’s Lewis and Clark, Pioneering Naturalists (Lincoln: University of Nebraska Press, 1969). |
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Discover More
- The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.
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Unless otherwise noted, journal excerpts are from The Journals of the Lewis and Clark Expedition, edited by Gary E. Moulton, 13 vols. (Lincoln: University of Nebraska Press, 1983-2001).