CATALOGUE. 
313 
foriiia, Arizona, and New Mexico. With the last, and also near Humboldt 
Lake, Western Nevada ; May. (1,045.) 
Chorizanthe Watsoni, T. & G. ; /. p. 199. Small, annual, hoary- 
pubescent, the at length sub-cymosely branched stem 1-3' high; leaves 2-8" 
long, 1" wide, narrowly spatulate or lanceolate, petioled, acutish, pointless, 
entire ; involucres somewhat scattered, panicled, coriaceous, the 5 teeth not 
margined, very unequal and, like the small acerose-subulate bracts, termin- 
ating in a recurved cusp, one (rarely 2) larger or broad and leafy, often 
nearly equaling the smooth cylindric (1^—21" long) tube, the rest subulate 
and small ; flower included, on a slender pedicel ; tube of the yellow 6-lobed 
calyx cylindric, the lobes slightly pubescent, acute ; stamens 9, inserted on 
the throat, the filaments and anthers short ; seed linear-subulate ; embryo 
straight ; cotyledons linear, longer than the radicle. — Collected by Dr. Torrey 
and Stretch, in Western Nevada. Rather frequent on the dry wash of the 
foot-hills from the Humboldt to Eeese Eiver ; May-July. Plate XXXIV. 
Fig. 4. A plant ; natural size. Fig. 5. Involucre, laid open, and flower ; 
enlarged four diameters. Fig. 6. Flower, laid open ; enlarged twelve diame- 
ters. (1,046.) 
Oxyria digyna, Campd. White Mountains of New Hampshire, Labra- 
dor, and Greenland, and on the Arctic Coast to Behring Strait ; Unalaska, 
and southward in the mountains to Colorado and California. East Humboldt, 
Clover, Wahsatch and Uinta Mountains; 8,500-11,000 feet altitude, in the 
moist crevices of shaded rocks ; July-September. (1,047.) 
RuMEX VENOSUS, Pursh. DC.Prodr. 14. 43. Stem branched, 1° high; 
leaves thick, flat, glabrous, petioled, the lowest ovate-subcordate at base, the 
rest ovate-lanceolate or oblong, acute, attenuate at base ; panicle leafy only 
at base ; raceme axillary and terminal, solitary, simple, sessile, the fascicles 
3-8-flowered ; flowers perfect, on capillary pedicels, jointed at the base and 
equaling the valves ; valves equal, orbicular, deeply cordate, entire, closely 
reticulate-veined, destitute of callus, becoming greatly dilated. — Leaves oflen 
4' long and 1^-2' wide, on rather short petioles; valves bright rose-color at 
maturity, 9-12" in diameter; outer sepals finally deflcxcd, about equaling the 
sinus of the valves. From the Saskatchewan to the Columbia and southward 
to New Mexico and California. Foot-hills of the West Humboldt and Pah- 
Ute Mountains, Nevada; 5,000 feet altitude ; May, June. (1,048.) 
40 
