BOTANY. 25 
AcANTHOGONUM RIGIDtM, Torr. in Bot. Whippl. Rep., p. 133, and in Pacif. R. Road Expl., T, p. 
362, ¢. 8. Banks of the Colorado and in the desert; March 20. 
PTEROSTEGIA DRYMARIORIDES, Fisch. & May, Benth. 1.c. Under rocks, Sitgreaves’s Pass; March. 
Rumex sauicirouius, Weinm.; Meisn. in DO. Prodr. 1. c., p. 41. Santa Isabel and San Felipe, 
California; November. 
Rumex venosus, Pursh. Fl. 2, p. 132, Hook, Fl. Bor.-Amer. 2, p. 130, t. 174. Yampai 
valley March 29. 
Rumex. Leaves and flowers, but no fruit of undetermined species; cultivated by the Mo- 
javes. Camp 52. 
AMARANTACE A. 
ALTERNANTHERA LANUGINOSA, Torr. in Emory’s Rep. and in Bot. Mex. Bound., p. 180. Achy- 
ranthes lanuginosa, Nutt. Banks of the Colorado, near Chimney Peak; January 16. 
Sarratia Bertanpiert, Mog. in DC. Prodr. 13, par 2, p. 240, var. Frmpriata, Torr. in Bot. 
Mex. Bound., p.79. ‘*The Oaks;’’ Nov. 17. 
CHENOPODIACEA. 
OBIONE HYMENELYTRA, Torr. in Bot. Whippl. Exped., p. 129, t. 20, and in Bot. Mex. Bound. , p. 
182. On rocky hills, growing in tufts; Explorer’s Pass and above; January. The male plant 
only was found. 
OstonE Barciayana, Benth.; Durand and Hilgard, Pacif. R. Road Expl.  Vallecito; very 
common in many parts of the Colorado desert, &c.; often 10 feet high, forming large clumps 
and masses. This is pretty clearly the plant described by Durand & Hilgard, |. c¢., but may 
not be that of Bentham ; perhaps it is only a form of O. acanthocarpa, Torr. 
OBIONE CANESCENS, Magin in DC.1.c. From San Felipe to the Colorado river; most com- 
mon on table-lands; November. A form with broadly-winged fruit. It is one of the shrubs 
called artemisia by travellers. 
Ostone potycarpa, Torr. in Emory’s Report, p. 119, and in Bot. Whippl. Exped., p. 130. 
Colorado desert, growing in tufts; November. : 
Oxtone conrertirouia, Jorr. & Frém. in Frém. 2d Rep., p. 318. At the crossing of the 
Little Colorado; May 1. Only the male plant was found; the female (as in several other 
species of this genus) is rarely seen in collections. : 
OBIONE ARENARIA, Mog. Chenop., p. 11.2 San Diego, California; November 17. Differs from 
the eastern plant in being erect, with smaller and somewhat toothed leaves, and smaller fruit. 
The specimens are very imperfect. 
CorIsPERNUM Hyssopirotium, Linn.; Mog. in DC. Prodr.l.c., p. 141. Camp 15; January 
15. In dry sandy places. ‘‘It is often uprooted and driven about by the wind; its curved 
branches forming a kind of ball, which rolls far from its place of growth, and thus distributes 
the seed.”’ 
MONOLEPIS CHENOPODIOIDES, B. triFIDA, Mog. in DC. Prodr. 13, par. 2, p. 26. Camp 89; 
March 7. . 4 
SUDA FRUTICOSA, var. MULTIFLORA, Torr. Bot. Whippl. Exp., p. 130. Saline soils; January 
16. A shrub, 4—5 feet high. : 
ARTHEOCNEMUM MACROSTACHYNUM, A. Bunge; Torr. in Bot. Mex. Bound. Rep., p. 184. “On 
the Colorado, from the Gulf of California to the Great Cafion, in saline soils; January 19. It 
is called ‘salt bush,’ and is a shrub, usually about two feet high, but sometimes attaining the 
height of seven feet.’’ | | 
LORANTHACEA. 
_ PHORADENDRON FLAvescENs, Nutt. in Jour. Acad. Phil. (n. ser.) 1, p.185. Santa Isabel, Cali- 
fornia; November 15, (in fruit.) Parasitic on Quercus agrifolia. 
M 
