304 LEGUMINOS^. Psoralea. 



muricate, wrinkled transversely. — Nutt. gen. 2. p. 104; DC. prodr. 2. p. 

 220. P. latifolia, Torr. ! in ann. lye. New-York, 2. p. 176. 



Banks of rivers, Kentucky ! and Illinois ! to Missouri ! June-July. — 

 Stem 3-5 feet hi<jh. Leaves very large, resembling those of Desmodium 

 bracteosum. Racemes 3-6 inches long. Flowers small, on short slender 

 pedicels. Legume much compressed, black, roughened with conical tuber- 

 cles and marked Vv'ilh obUque reticulated wrinkles. Seeds oblong, dark 

 brown. — Very nearly allied to the two preceding species. 



24. P. physodes (Dough): more or less pubescent; leaves pinnately 3- 

 foliolate ; leaflets broadly rhombic-ovate, acute, mucronate, obscurely glandu- 

 lar ; racemes loose, longer than the leaves ; calyx much inflated, hirsute; the 

 teeth nearly equal, shorter than the tube. — Hook. fi. Bor.-Am. 2. p. 136. 



0. nearly glabrous ; stem roughened with slightly projecting glands; leaf- 

 lets nearly orbicular ; racemes scarcely as long as the leaves. 



Banks of rivers, Oregon, Douglas, Nuttall! 0. California, Douglas ! — 

 Plant about li foot high. Leaflets \\ inch long and nearly one inch in dia- 

 meter. Stipules lanceolate. Racemes 15-20-flowered. Calyx clothed with 

 long blackish hairs, decidedly shorter than the corolla (scarcely shorter. Hook- 

 er). Corolla nearly white, the wings and keel tipped with purple. Legume 

 elliptical, membranaceous, pubescent, entirely covered by the enlarged ca- 

 lyx. — According to Hooker the leaves are sometimes 5-foliolate, but Mr. Nut- 

 tall informs us that he found them invariably 3-foliolate. Hooker also de- 

 scribes the corolla as scarcely exceeding the calyx, whereas we find it to be 

 nearly twice as long ; so that his plant is perhaps a distinct, but nearly allied 

 species to ours. 



25. P. orbicularis (Lindl.) : pubescent, the hairs mixed with smaU cla- 

 vate truncate glands; stem prostrate and creeping; leaves 3-foliolate, on very 

 long petioles ; leaflets roundish-oval ; peduncles as long as the leaves; spikes 

 capitate ; bracts (oblong) and calyx very hirsute ; lowest tooth of the calyx 

 much the longest. Lindl. bot. rcg. t. 1971. 



CaUfornia, Douglas. June-July. — Stem long, tough and slender: glands 

 dark, resembling tacks. Petioles about 6 inches long. Spikes globose-ovate. 

 Flowers bright purplish red. Lindl. 



26. P. inacrostachya (DC): whole plant pubescent; stem erect; leaves 

 3-folio'ate ; leaflets ovate, mucronate ; petioles glandularly scabrous ; pedun- 

 cles 4 times as long as the leaves ; spikes cylindrical-oblong ; the rachis, bracts, 

 and calyx very hirsute; lowest tooth of the calyx nearly as long as the co- 

 rolla.— />C. jJrodr. 2. p. 220; Lindl. bot. reg. t. 1769; Hook Jl. Bor.-Am. 

 1. p. 136. 



li.l tomentose-pubescent; stem and petioles covered with stipitate glands; 

 leaflets rhombic-oval, slightly pubescent and dotted with glands above ; stipules 

 large, broadly ovate, acuminate ; peduncles a little longer than the leaves ; 

 spikes oblong; bracts very broad and acummate, as long as the flower ; calyx 

 hirsute, the lower tooth nearly as long as the corolla, the other teeth unequal. 



California, Douglas. Nootka ? DC. 0. California, Douglas! — Stem 

 about 3 feet high, branched. Spikes about 2 inches long. Stipules ovate, 

 acuminate, small. Leaflets about 2 inches long ; the rachis and ovate acumi- 

 nate bracts clothed with blackish hairs. Flowers purple. Legume ovate, 

 black, glabrous, Avith a short point. Lindl. — Our 0. differs in several respects 

 from the figure and description of Lindley here quoted, but these were taken 

 from cultivated specimens. 



* * * Leaves pinnate, 



27. P. multijuga (Ell.) : leaves pinnate ; leaflets numerous (9-10 pairs), 

 oblong-lanceolate, obtuse, pubescent; spikes oblong; bracts small, membrana- 

 ceous, without glands. Ell. sk. 2. p. 198; D. C. prodr. 2. p. 220. 



