APPENDIX. 
365 
are said to use the dried and pulverized leaves as a condiment. The fruit is nearly globose, 
about the size of an ordinary plum, and when ripe, (which is about the middle of July,) of a 
dark purple color. 
Quercus Hindsii, Benth.'Bot. Sulph. p. 55. Q. longiglanda, Torr. in Frem. Geogr. Mem. 
Q. Eansomi, Kellogg, in Proceed. Calif. Acad. Fat. Sc., p. 25? With the next; bearing its 
long ripe acorns in October. 
Quercus crassipocula (n. sp.): foliis perennantibus coriaceis petiolatis ohlongis acutis integer- 
rimis v. parce acuteque dentatis suhtus puhescentihus demum glabris ; fructibus sessilibus, cupula 
depresso-hemispherica crassissima, squamis latissimis tomentosis brevi-acuminatis glanda, ovata 
glabra. (Tab. IX.) Tejon Pass. This handsome evergreen oak is usually but a middle-sized tree. 
It is certainly very near Q. densiflora, Hook. & Am., of which I have no good acorns for compa¬ 
rison. That species (judging from the figure of Hooker, lc., t. 380,) has smaller acorns, a thin, 
hemispherical cup, and narrow scales. The leaves vary in size and form ; on young shoots they 
are often sharply dentate. The cups are sometimes nearly an inch and a half in diameter, and 
extremely thick, with a rounded margin. The scales are broader than long, and have a small, 
abrupt point. The lower ones, and sometimes all of them, are more or less thickened and pul- 
vinate, so that they give to the cup a tuberculate appearance. Gland often an inch and three- 
quarters long, obtuse, only a third or fourth part immersed in the cup. 
Quercus agrifolia, Nee, in Ann. Sc. Nat. 3, p. 371. Q. oxyadenia, Torr. in Sitgr. Bep. t. 17. 
Q. acutiglandis, Kellogg, l. c. Bear canon of the Sierra Nevada. We have elsewhere remarked 
how variable are the leaves and acorns of this species. The acorns collected by Mr. Blake were 
all elongated, and very acute. The plant generally forms low, scrubby hushes, hut is sometimes 
twenty feet high. 
Quercus Douglasii, Hook. <& Am. Bot. Beech, p. 371; Hook. Ic. t. 382 and 383. Summit 
of Tejon Pass. This belongs to the group that includes Q. alba. 
Quercus imbricaria, Michx. FI. 2, 197; Michx. f. Sylv. 1, p. 65, t. 15 ? Tejon Pass ; leaves 
only. Without the fruit we cannot determine the species with certainty, hut the leaves so 
strongly resemble those of the Laurel-oak, that we would have little doubt as to the identification 
had the Q. imbricaria ever been found before west ot the Rocky Mountains. The late Captain 
Gunnison collected it on the headwaters of the Arkansas. 
Populus monolifera, Ait. Kew. ed. 1, 3, p. 406; Michx. f. Sylv. 1, t. 96, fig. 2. P. Cana¬ 
densis, Michx. 1. c. t. 95. This is the common cottonwood, which has a range from the 
Atlantic to the Great Colorado, and almost as great an extent of latitude. It is abundant in 
some places near Fort Yuma. 
Salix longifolia, Muhl., var. ? : foliis dense serratis ; fructibus glabris. On the Colorado. 
Ephedra antisiphilitica, Movie. Mountains east of San Diego. 
Cyperus phymatodes, Muhl. Gram. p. 23. Abundant in the immediate valley of the Gila, 
ten miles from Fort Yuma ; November. Near Kern River, Tule ; August. 
Cyperus Michauxianus, Schultes ; Torr. Cyp. p. 259. Banks of the Colorado, in moist places; 
a dwarf form. 
Scirpus lacustris, Linn .; Torr. Cyp. p. 321. Kern River; August. The specimens are 
remarkably tall, being more than eight feet high, hut the panicle of spikelets is very small. 
Vilfa utilis (n. sp.) : glabra culmis prostratis v. assurgentibus ramosissimis tenuibus ; foliis 
(l"-2") angustis convolutis confertis patulis v. recurvis ; panicula (1") contracta pauciflora ; 
(spiculis ;) glumis submqualibus laneeolatis acutis paleas fequales acutiusculas dimidio bre- 
