151 [7] : 
: EURBURSIARE SS. 
Eremocarpus setigerus, Benth. in bot. of Sulph., p. 53, & 26. 
Plains of Sau Diego, California. 
Hendecandra Texensis, Klotzsch. H. multiflora, Torr. in Frém. 
lst report. Croton muricatum, Nutt. Valley of the Del Norte. 
Another species of this genus, allied to H. procumbens, 
was 
found on the Cordilleras of Mexico, but the materials are scarcely _ 
sufficient for determining it satisfactorily. 
Stillingia spinulosa, . sp. Suffruticose? leaves rhombic- ovate, 
rigid, narrowed at the base, prominently 3-nerved, mucronately 
acuminate, dentate-spinulose on the margin; spikes axillary and 
terminal; sterile flowers sepile; bracts acuminate, with a stipitate 
gland on each side at the base. Abundant in the desert west of 
the Colorado. Stem (apparently) about a span high, with spread- 
ing branches. Leaves an inch or more in length, sessile, neatly 
margined, with spreading spinulose teeth, glabrous on both sides. 
Spikes nimerous; with solitary fertile flowers at the base. Sterile 
flowers about as long as the scale. Perianth hemispherical, ifreg- 
ularly lobed and undulated. Stamens2. Fertile flowers imperfect 
in our specimens. Fruit glabrous. 
Euphorbia herniaroides, Wut. Banks of the Gila. A pubes- 
cent variety of this apseise was found in the desert — toes the 
Colorado. 
ie 
° tee 
CUPULIFER. 
Fate rcus Emoryi, x. sp. Leaves coriaceous, oblomg, on “yery 
Bas” Biases remotely rid repens toothed, Pee mu- 
itary and in 
ales 
slr Cénmon in the elevated country between. the 1 e 
Norte and the Gila. This small-leaved oak resembles Q. it of 
and Q. undulata, (Torr. in Ann. lyc. N. York 2, p. 248, t. 4,) 
is quite distinct from both ae 
SALICACES. : ; nee 
Salix. Several narrow-leaved willows were found alovg the 
Gila, and in the region west of the Colorado, but being without - 
_ fructifieation they cannot be determined. One of them is used as 
_ food for cattle when there is no oe “}; 
prea PLATANACEE. >. 2 
NUS Mexicanus, Moricand pl. nouv. ou rares d’ Amer. t. § 
npr Benth. bot. oe spe ta P . 
of the Gila. 
its “Willa. ‘Som. the ie bet 
‘and the Gila, and the hills bordering the Caer ie to qm ) 
am 
