130 BOTANY. 
ERI0GONUM UMBELLATUM, Torr. in Annal. Lyc. N. York, 2, p. 241; and in Sitgreaves's Rep. 
t. 12; not of Benth. Near the Rocky Mountains. 
QUERCUS rMBRICARIA, Willd. Spec. 4, p. 428 ; Micha. f. Sylv. 1, p. 69, t. 15. Upper Arkansas. 
A handsome tree from 35 to 45 feet high, with a trunk sometimes 18 inches in diameter. 
Quercus ALBA, Linn. ; Miche. f. Sylv. 1, p. 11, t. 1. 8? Gunnisonir: shrubby; leaves oblong, 
somewhat coriaceous, smooth above, minutely pubescent underneath, pinnatifidly lobed, the 
lobes nearly equal, entire, semi-ovate, obtuse; fruit on a long peduncle; cup hemispherical ; 
scales oblong, flattish, with a short, abrupt, discolored acumination; gland ovate. On declivi- 
ties of mountains. Coochetopa Pass, Sierra San Juan. A shrub 6-10 feet high. Acorns less 
than half as large as in Q. alba. 
Apres TAXIFOLIA, Lamb. Pin. 2, t. 47. Roubideau’s Pass. A handsome tree growing from 
35 to 40 feet high, and 12 to 16 inches in diameter. The specimens are without cones. The 
leaves are from an inch and a quarter to nearly two inches long, very slender and glaucous on 
both sides. 
Pinus (undetermined) ; apparently between P. flexilis of James and P. Strobus. Highest 
places in the Coochetopa. Leaves in fives, about an inch and a half long, besmeared with a 
clear colorless balsam. This is the same pine that Col. Fremont collected on his first expedition, 
and is noticed in the Botanical Appendix to his Report, 1843, p. 97. For want of the cones, 
it cannot be satisfactorily determined. Perhaps it belongs to that section of the genus which 
includes P. edulis, Engelm. and P. monophylla, Torr. 
Pinus SanINIANA, Dougl. Mssc.; Lamb. Pin. (ed. 2), 2, p. 146, t. 80; Endl. Syn. Conif. p. 
159. Valley of the Sacramento. One of the cones brought home by Lieut. Beckwith measured 
9 inches in height, by 21 inches in circumference. 
JUNIPERUS VIRGINIANA, Linn.; Miche. f. Syl. 2, p. 354, t. 155; Endl. Synops. Conif. p. 2'7. 
Coochetopa. A small tree, not exceeding 15 feet in height. 
JUNIPERUS COMMUNIS, Linn.; Endl. l.c. Prostrate under and around trees. Roubideau’s 
Pass. 
TRADESCANTIA VIRGINICA, Linn.; Bot. Mag. t. 105; Kunth., Enum. 4, p. 81. Prairies, Upper 
Arkansas; June. 
PLATANTHERA LEUCOPILEA, Gray, Bot. N. States, p. 472. Orchis leucophea, Nutt. in Trans. 
Amer, Phil. Soc. (n. ser.) 5, p. 161. Prairies near Westport. 
MzLawTHIUM Virernicum, Linn.; Torr. Fl. N. York, 2, p. 116. Zygadenus Virginicus, 
Kunth, Enum. 4, p. 195. Prairies, Upper Arkansas ; July. 
ZYGADENUS GLAUCUS, Nutt. in Jour. Acad. Phil. T, p. 56. Z. chloranthus. Richards. Append. 
to Frankl, Narr. p. 12; Hook. Fl. Bor.-Am. 2, p. 177. Anticlea glauca, Kunth, Enum. 4, p. 
192. Roubideau's Pass, Sierra Blanca. 
SAGITTARIA VARIABILIS, Engelm. in Gray's Bot. N. States, p. 461. S. sagittifolia of most 
American botanists. In water, Upper Arkansas. 5 
HETERANTHERA LIMOSA, Vahl, Enum. 2, p. 44; Kunth, Enum. 4, p. 122. Leptanthus ovalis, 
Michz. Fl. 1, p. 25, t. 5, f. 1. Wet places, Westport, &c., Arkansas river. Corolla usually 
blue, but a white-flowered variety was found with the common form. 
 CarocHoRTUs VENUSTUS, Benth. im Hort. Trans. (n. s.) 1, p. 412, t. 15,f. 2, var?: sepals 
erect; petals obovate, bearded and without a spot below the middle, purple at the base. 
Grows under trees on high mountains. Utah. Stem 2-3-flowered. Leaves grass-like, about 
two lines wide. Flowers nearly 3 inches in diameter. Sepals lanceolate, striate with purple 
veins externally. Petals nearly twice as long as the sepals, the upper half white, pale yellow- 
ish-green lower down , Where the inside is bearded with longish gland-tipped hairs, which are 
dark purple at the base. Near the base the hairs are more numerous, and form a transverse 
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