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The ExpeditionBitterroot Barrier: K'useyneiskitCamassia quamash
3. Foliage
5. Calyx

4. Peduncle and Pedicel

Capt. Lewis:

the peduncle is soletary, proceeds from the root, is columner, smooth, leafless, and rises to the height of 2 or 2-1/2 feet.

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"[The pedicel] supports from 10 to forty flowers, which are each supported by a separate footstalk of 1/2 an inch in length, scattered without order on the upper portion of the peduncle."

Prof. Reveal:

Unlike many modern botanists, Lewis clearly understood the difference between a peduncle (the stalk that holds the inflorescence and arises from the bulb) and a pedicel (the stalk that holds an individual flower). In describing the inflorescence, Lewis states that the "10 to forty flowers" are on a “footstalk.” The term “footstalk” is equal to "pedicel" so that the individual flowers are pedicellate, or "on a pedicel."

pedicel--"The stalk of a single flower in an inflorescence."

peduncle--"The stalk of an inflorescence or of a solitary flower." The word comes from pedunculus, a diminutive of the Latin pes, ped-, meaning foot.

inflorescence--"A flower cluster of a plant, or, more correctly, the arrangement of the flowers on the axis."

Supported in part by a grant from the Idaho Governor's Lewis and Clark Trail Committee.

3. Foliage
5. Calyx

From Discovering Lewis & Clark ®, http://www.lewis-clark.org © 1998-2014
by The Lewis and Clark Fort Mandan Foundation, Washburn, North Dakota.
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)