

CATALOGUE OF SPECIES. 



137 



Psathyrotes ramosisBima (Ton*.) hi Emory, Rep. 145 (1848), under Telradumia; 

 Gray, Proc. Amer. Acad. vii. 363 (1868). Type locality, "hills bordering the Gila." 



This species, so fur as it was observed by the expedition, differs from P. annua, 

 in addition to the published characters, in having the base of the stem snffrutescent, 

 and persistent for at least one year. It was often seen in full flower in midwinter. 

 The other species appears to be strictly an annual. The corollas of P. ramosissima 

 are often purplish, showing in this respect the same variation as P. annua. The 

 herbage has a strong odor similar to that of commercial varnish. 



The plant was found at Lone Willow Tanks ; in Long Valley ; near Bennett Wells ; 

 in % canon of tlie Funeral Mountains east of the latter point; in Furnace Creek 

 Ca Ion (Nos. 213, 568); between Salt Wells and Saratoga Springs; at several points 

 in the vicinity of t!ie latter place; in Resting Springs Valley; at Ash Meadows; 

 be iween Coltonwood Springs and Vegas Ranch ; in the Vegas Wash ; in the northern 

 pa t of Vegas Valley ; between Towner's and Ash Meadows; near Hot Springs, Pana- 



t Valley; and about the mouth of Surprise Canon. 



• 



chillea millefolium L. Sp. PI. ii. 899 (1753). Type locality European. 



tie yarrow occurred frequently as a weed on the west slope of the Sierra Nevada 



ig our route between Walker and Tehachapi passes. 



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nthemis cotula L. Sp. PL ii. 894 (1753). Type locality European, 

 sis plant, the mayweed, was seen at several points along our route between 

 iville and Tehachapi Pass, and specimens were collected near Visalia (No. 1258), 

 the species did not occur east of the Sierra Nevada in the desert. 



[atricaria discoidea DO. Prodr. vi. 50(1837). Type locality, " in California." 

 hit Havilah (No. 1070). 



Dtula coronopifolia L. Sp. PL ii. 892 (1753). Type locality, "in ^Ethiopia," etc. 

 ;ar San Bernardino (No. 23). 



inacetum cauum Eaton, Bot. King Surv. 179 (1871). Type locality, "lime- 



e rocks at the mouth of a canon in the East Humboldt Mountains, Nevada ; 6,500 



elevation." 



aove timber-line on Mount Whitney (No. 2057). The heads of this plant are 



illy described as only 4 mm. broad, but in our specimens they frequently reach 



rtemisia californica Less. Linmea, *rt. 523 (1831). Type locality, "in Califor- 

 nia '' near San Francisco. 



. t the southern base of the San Bernardino Mountains (Nos. 111,124). 



Artemisia dracunculoides Pursh, Fl. 742 (1814). Type locality, "in Upper 

 Louisiana." 



In the Canada de las Uvas (No. 1212), and along the North Fork of Kern River (No. 

 1594). 



Artemisia filifolia Torr. Ann. Lye. N. Y. ii. 211(1828). Type locality not given. 

 The original specimens were collected by E. P. James in 1820 on Long's first expedi- 

 tion, and probably came from western Nebraska. 



Near St. George, Utah, in the valley of the Santa Clara River (No. 1958). This 

 station marks probably the extreme western limit of the species. 



Artemisia ludoviciana Nutt. Gen. ii. 143 (1818). Type locality, "on the banks 

 of the Mississippi, near St. Louis; also on the alluvial plains of the Missouri." 



A variety of forms have been referred to this species. Our plant is 1 to 1.5 m. high, 

 with leaves about 10 cm. long, the upper ones entire and lanceolate, the lower 3- to 

 5-cleft, all finely white-tomentose beneath, and green and only sparingly pubescent 

 above. It is the common Californian form. 





