|Eastern Mojave Vegetation||Account of an Expedition from Pittsburgh to the Rocky Mountains performed in the years 1819, 1820, by order of the Hon. J. C. Calhoun, under the command of Major Stephen H. Long. Volume 2.|
Edited by Tom Schweich
|These are excerpts from James' account of the expedition that I find very interesting, but are too long for inclusion elsewhere, such as my Golden flora.|
James (1823) wrote that four members of the party set out …
Stipa juncea Pursh is a synonym of
Hesperostipa comata (Trin. & Rupr.) Barkworth “Needle and Thread” (Reveal, Moulton, and Schuyler, 1999).
It is not clear what the other grass was.
Stipa bicolor Pursh seems most likely for which Pursh lists Stipa barbata Michx. as a synonym.
However, both of these names are illegitimate and dead ends for Colorado grasses.
Stipa barbata Desf. is a native of southern Europe, North Africa, the Levant, and temperate Asia.
It seems unlikely that the grass could have been in this part of North America.
It seems more likely that James' complaint of the seeds being "like the quills of a porcupine"
refers to Porcupine Grass Hesperostipa spartea (Trin.) Barkworth.
The place the party stopped is generally agreed to be Inspiration Point, near Sheridan Boulevard and West 49th Avenue.
On page 343, James wrote in Note :
The Clematis is unknown. While there are five species of Clematis
known from Jefferson, none have been collected in the lower portion of Clear Creek and vicinity.
The Lycopus is probably L. americanus Muhlenberg.
Liatris graminifolia (Walter) Willd. is a synonym of L. pilosa (Aiton) Willd.,
a native of the eastern U. S.
James and company most likely saw L. punctata Hook. (Fl. Bor.-Amer. (Hooker) i. 306. t. 105. 1833.)
Sium latifolium L. does not occur in the U. S.
James &c. probably saw any one of a large number of tall water-loving Apiaceae with white flowers.
They probably did not see Oenothera biennis L. which has been introduced to Colorado,
But was not likely to be see here in 1820.
Possibly they saw one of the native caulescent Oenotheras with large yellow flowers such as
O. villosa Thunb.
They were probably correct about seeing Linum lewisii Pursh.
But the Eriogonum sericeum was probably that of Pursh (Fl. Amer. Sept. 1: 277 1813.),
which is now a synonym of E. flavum Nutt. ex Benth.
since E. sericeum Torr. & A. Gray would not be published until 1870.
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Date and time this article was prepared: 9/23/2020 5:24:51 PM