388 LEGUMINOSiE. Pickkringia. 



2. T. rhomhifolia (Nutt.) : leaves petioled ; leaflets obovale-cuneiform, 

 silky-puberulent, at length nearly glabrous; stipules ovate or cordate, acute, 

 as long as tlie petioles ; flowers alternate or geminate ; bracts oval, shorter ' 

 than the pedicels ; calyx short ; the teeth triangidar, acute, the upper one 

 2-toothed ; legumes elongated, falcate, pendulous, glabrous. — Nutt.! gen. 1. 

 p. 283 (under Thermia) ; Richards. ajJj^x. Frankl. journ. ed. 2. p. 13 ; DC. ! 

 prodr. 2. p. 99; Hook. fl. Bor.-Am. 1. p. 128, /. 47. Cytisus rhombifolius, 

 Pursh, fl. 2. p. 741. 



Near Fort Mandan, Missouri, Bradbury, Nutt.all! Plains of die Platte, 

 Dr. James! Nutlall! About the Saskatchawan, Richardson 6cc. and in the 

 Rocky Mountains, Nuttall. May. — Flowers smaller than in T. lanceolata, 

 which the species resembles, yellow. Legumes about 3 inches long, here 

 and there narrowed by the abortion of the seeds, but not articulated. 



3. T. fahacca (DC): leaves petioled; leaflets broadly oval; stipules 

 broadly ovate, obtuse, shorter than the petiole; flowers alternate. DC. I. c. ; 

 Hook. I. c. Sojjhora fabacea, Pallas, Astr. t. 90, f. 2. 



Near the sources of the Ulalla and Wallawallah, in the vallies of the Blue 

 Mountains of Oregon. Douglas. — Found by Pallas in Kamtschatka. We 

 are wholly unacquainted with this species. Hooker remarks that his speci- 

 men under this name has the leaves thrice as large, and the peduncles thrice 

 9,8 long as in the preceding species. 



4. T. 7nontana (Nutt. ! mss.) : " somewhat silky-pubesent, at length gla- 

 brous ; leaves petioled ; leaflets lanceolate, narrowed at the base ; stipules 

 oblong-ovate, scarcely longer than the petioles ; flowers alternate or sometimes 

 geminate, subsessile ; teeth of the calyx very short ; legumes linear, erect, 

 nearly straight, silky, at length nearly glabrous. 



"High vallies of the Rocky Mountains, in bushy places by streams, near 

 the line of Upper California. June. — A showy species, with a spike of bright 

 yellow flowers .3-4 inches long. Leaflets 1-1 i inch long. Bracts small. 

 Teeth of the calyx very broad and short, acute, nearly equal." Nuttall. — 

 The vexillum is considerably shorter than the wings. Legumes narrow, 

 pbout 10-seeded. 



5. T. macrophylla (Hook. & Am.) : stem angled ; the upper portion, as 

 well as the petioles, calyx, and ovaries, villous ; leaves petioled ; leaflets 

 obovate-elliptical, tomentose-pubescent beneath, glabrous above ; stipules 

 large, ovate, acute, longer tliari the petioles ; flowers alternate, on short 

 pedicels ; calyx short ; the 3 lower teeth acute, the upper slightly 2-toothed ; 

 legumes oblong-linear, straight, erect, 4-5-seeded. — Hook. 8f Am. ! hot. 

 Beechey, s^qjj^l. p. 329. 



fi. much less pubescent in all its parts. 



California, Douglas! — Leaflets 3-4 inches long. Stipules 1^ inch in 

 length. Bracts rather shorter than the calyx. Legumes nearly 2 inches 

 long, hairy when young. — In the smoother form, of which the specimens are 

 in a much less advanced state, the teeth of the calyx are shorter and broader. 



50. PICKERINGIA. Nutt. mss. {not of jour. acad. Philad.*) 



Caly^ campanulate, somewhat truncate, repandly 4-toothed ; tlie teeth 

 nearly equal. Vexillum orbicular, emargniate, plicate in the middle, as 



* The genus originally established under this name, in the Journal of the 

 Academy of Natural Sciences, not being distinct from Ardisia, Mr. Nuttall has 

 dedicated this plant to the same acute naturalist. 



