CATALOGUE. 99 
sessile, a line and a half long: filaments and pubescent style slightly 
exserted: pod 3 or 4 lines long, attenuate at base-—New Mexico and 
Arizona, rarely collected; near Santa Fé, Rothrock (91). Pxiate IL* 
Amorpua Fruticosa, Linn.—In its various fcrms from Winnipeg Valley 
to Texas and New Mexico and eastward to the Atlantic; at Willow Spring, 
Ariz., at 7,200 feet altitude, Rothrock (244), apparently the typical broad- 
leaved form, in flower, and resembling specimens collected at San Diego, Cal., 
by Palmer (65), in 1875. Only the fruit will determine positively whether 
it be not A. Californica, Nutt., which has a shorter and broader pod than 
the Eastern species, and usually more slender and acute calyx-teeth. 
PETALOSTEMON cANDIDUS, Michx.—From the Saskatchewan to Arizona 
and eastward to Michigan and the Mississippi; at Willow Spring, Ariz., 
Rothrock (248), and Cosino Caves, Loew (192). 
PeTALOSTEMON TENUIFOLIUS, Gray (Proc. Am. Acad. xi, 73),—Peren- 
nial, branching, pubescent or glabrate, low: leaflets 3 to 5, linear or revo- 
lute-filiform, 3 to 6 lines long, about equalling the petiole, sparingly gland- 
ular: spikes ovate to cylindrical, dense, rather long-pedunculate ; bracts 
ovate, rather abruptly attenuate into a long awn, densely silky-villous as well 
as the calyx: calyx-teeth lanceolate, attenuate, equalling the tube: petals 
rose-colored; standard round-cordate, hooded.—Western Arkansas to New 
Mexico; Arizona, Rothrock (81). Pxate I.t 
Davea ALoPEcUROIDES, Willd.—From Sonora to oe aad eastward 
to Texas and Southern Illinois; Arizona or New Mexico, Loew (274). 
Dates apirtora, Gray (Pl. Wright. ii, 38)—Perennial, herbaceous, 
erect, more or less hoary-pubescent, a foot high or more: leaflets small, 10 
to 15 pairs, narrowly oblong, obtuse, smoother above, 2 or 3 lines long: 
spikes cylindrical, dense and densely white-silky; bracts subulate-setaceous, 
exceeding the calyx: teeth of the calyx subulate, a little shorter than the 
tube: petals white—New Mexico to Sonora; Camp Bowie, Ariz. (502). 
*A. Branch ; a size. Fig.1. Flower. Fig. 2. . asenens section . throagh esctiony Fig. 3. 
Stamineal tube laid open. Fig. 4. Mature legume. Fig. 5. g showing 
the seed and embryo. All except the branch enlarged about a diameters. 
+B. A branch somewhat reduced. Fig. 6. A bract from beneath the flower. Fig.7. A flower seen 
from the side. Fig. 8. A flower seen from above, with four petals on the stamineal column, and the fifth 
on the calyx. Fig. 9. A section through the pod, with the seed in pesition. All except the branch 
enlarged about five diameters. 
