B44 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Type in the U. S. National Herbarium, no. 327015, collected at Thurber, Utah, 
‘altitude 2,100 meters, in flower and fruit, August 1, 1894, by M. E. Jones (no. 5708; 
distributed as P. moffatti Eastw.). Isotypes in herbaria of Missouri Botanical Garden 
and New York Botanical Garden. 
Dry mesas, at altituaes of 1,600 to 2,100 meters; Upper Sonoran Zone; flowering 
late May to late June. Colorado drainage of southwestern Colorado and southeastern 
Utah, southward into northern New Mexico and northern Arizona. 
Co.orapo: Montezuma: Mancos, Baker, Earle &: Tracy 410 (F, M, U, Y). Montrose: 
Naturita, Payson 347 (F, M). 
Uran: Garfield: Siler (M). Wayne: Thurber, Jones 5708 (M, U, Y). 
17. Penstemon cleburnei Jones. 
Penstemon cieburnei Jones, Contr. West. Bot. 12: 62. 1908. “This is common on 
the Green River Desert, Wyoming, at Granger and Green River, and appears to have 
been first collected since the time of Nuttall] by Cleburne, June 27, 1875. It is also 
A. Nelson’s no. 4716." Type (in Jones Herbarium) and specimen of Nuttall not seen, 
but description, and also specimen of A. Nelson, indicate the plant here considered. 
Penstemon auricomus A. Nels.; Rydb. Bull. Torrey Club 86: 688. 1909. “ Pent- 
stemon jamesiti A. Nelson, Bull. Torrey Club 25: 547. 1898” (as to description). 
“Recent collections * * * by the writer in the Red Desert of Wyoming in 1897 
(no. 3052) and again in 1898 (no. 4716).’’ Isotype, Nelson 3052, collected at Green 
River, Sweetwater County, Wyoming, May 31, 1897, seen in herbarium of the New 
York Botanical Garden. 
Stony hillsides, at altitudes of 1,800 to 2,000 meters; Upper Sonoran Zone; flower- 
ing from late May to late June. Red Desert of southwestern Wyoming. 
Wyromina: Carbon: Fort Steele, Nelson 5384 (R). Sweetwater: Green River, Nelson 
3052 (M, R, Y), 4716 (F, R), Pennell 5893 (Y). 
18. Penstemon petiolatus T. S. Brandeg. 
Penstemon petiolatus T. S. Brandeg. Bot. Gaz. 27: 455. 1899. “Sheep mountain, 
Nevada, at 5,000 ft. altitude, Dr. C..A. Purpus, no. 6136.”” Isotype seen in herbarium 
of the New York Botanical Garden; also, through the courtesy of Dr. H. M. Hall, a 
fragment of the type from the University of California. The original description must 
be modified so as to denote a plant cinereous-puberulent throughout, somewhat 
glandular-pubescent on the stem above and on the inflorescence, and with a bearded 
sterile filament. The original collection consisted of plants past normal flower, but 
with old shriveled corollas still attached. The specimens of A. L. Siler cited below 
are certainly the same species, and are in full blossom. They show more clearly the 
glandular inflorescence and the bearded sterile filament, and apparently that the 
corolla is reddish. 
“Crevices of limestone rock’’; probably Upper Sonoran Zone; flowering in March. 
Beaverdam Mountains of southwestern Utah and mountains of southern Nevada. 
Utan: Washington: Beaverdam Mountains, Siler (A). 
19. Penstemon palmeri A. Gray. 
Penstemon palmeri A. Gray, Proc. Amer. Acad. 7: 379. 1868. ‘‘Arizona, in Skull 
Valley, and on Rio Verde, near Fort Whipple, Drs. Elliott Coues and Edward Palmer.” 
At an altitude of about 2,400 meters; Upper Sonoran Zone; flowering in late June. 
Southwestern Utah and central Arizona to eastern California. 
Uran: Beaver: Frisco, Jones 1820 (F, U, Y). Kane: Siler (A). 
20. Penstemon hallii A. Gray. 
Penstemon hallii A. Gray, Proc. Amer. Acad. 6: 70. 1862. ‘Rocky Mountains 
near Clear Creek [Colorado], etc., in the alpine region, coll. 1862, Parry, Hall and 
