Thifomcm. LEGUMINOS/E. 319 



branched. Leaflets 1-1^ inch in leni^th ; the petioles rather lonc;er than the 

 ii'allcts. Heads 6-S lines in diameter, 12-18-llowered, on slender peduncles. 

 Flowers purple, tipped with white. 



27. T. acicninre (Nutt. mss.) : "erect, branchinf^ from the base ; leaflets 

 narrowly lanceolate-linear, acute, spinulosely and closely serrulate; lower sti- 

 pules entire, acuminate, upper ones laciniate ; involucre many-cleft, some- 

 what shorter than the u'lobose head; flowers reflexed ; teeth of the calyx sim- 

 ple (or rarely toothed at the base), subulate, as long as the tube, rather shorter 

 than the corolla ; letrume linear-oblona. 2-seeded. 



"Plains of St. Barbara. March-April.— (l) Rather tall; stem terete. Leaf- 

 lets about 2 inches lons^. the upper ones on shortish petioles. Peduncles 3-4 

 inches lon<j. Calyx at lenijth nearly campanulate. with lon::^ pungent teeth. 

 Corolla brownish-red. — Nearly allied to T. tridentatum.*' Nultall. 



23. T. pohjphyniim (Nutl. mss.): "somewhat erect, glabrous; leaflets 

 3-5, lanceolate-linear, spinulosely serrulate ; stipules acuminate, laciniate 

 and spinulose ; involucre many-cleft, someAvhat shorter than the subglobose 

 head ; teeth of the calyx rather broadly subulate, pungent, about the length 

 of the tube, and rather shorter than the abbreviated corolla ; legume 2-seeded. 



" Woods around St. Barbara, Upper California. A[)ril. — (T) Resembles 

 the preceding, but the flowers are smaller and the leaflets longer and more 

 numerous (sometimes as many as 6)." Nutlall. — We have seen no speci- 

 mens of this and the preceding species : they seem to be very near T. involu- 

 cratum. 



-A 29. T. pauciflorum (Nutt. ! mss.) : "glabrous, nearly erect, slender, much 

 ^ branched from the base ; lower leaflets cuncate-oblong ; upper ones lanceo- 

 late-linear, acuminate, distantly and minutely spinulose-serrulate ; stipules 

 laciniate, acuminate ; involucre many-cleft, much shorter than the small few- 

 flowered head ; teeth of the calyx simple, broadly subulate, pungent, scarcely 

 longer than the tube, and shorter than the corolla ; legume 2-seeded. 



" Wet places on the higher plains of the Oregon, particularly abundant 

 nearly the outlet of the Wahlamet. Aprii-Mny. — 'T) Stem about a foot high, 

 sometimes sparingly branched above, as well as from the base. Petioles of 

 the lower leaves very long: the uppermost short. Lowest leaflets obovate, 

 obtuse or emarginate ; upper ones 8-10 lines long, and about U lines wide. 

 Stipules rather small. Involucre 12-16 parted, about one-third the length of 

 the flowers. Heads .5-7-flo\vered. on long filiform (often axillary) peduncles. 

 Lower part of the corolla dull purple ; upper part whitish." 



-/- 30. T.fucatum, (Lindl.) : glabrous, acending ; leaflets roundish-cuneiform, 

 sharply denticulate, rather thick ; stipules (large) scarious, ovate, entire, mu- 

 cronate with a long point; peduncles mostly longer than the leaves; invo- 

 lucre scarcely half the length of the somewhat hemispherical, few-flowered 

 heads, 9-cleft; the segments ovate, acuminate, entire; calyx many times 

 shorter than the corolla; the teeth trian'jfular, acute, unequal, about the length 

 of the tube; wings as long as the vexillum; legume stipitate, 5-8-seeded. — 

 Lindl. ! hot. resr. t. 1883. 



California, Douglas .'—CD Heads 1-2 inches in diameter. Flowers cream- 

 color mixed with red. Peduncles axillary. 



31. T. amplectens : glabrous, erect, branching : leaflets obovate-cuneiform, 

 mucronately denticulate ; stipules ovate, scarious, entire, aristate-mucronatc ; 

 peduncles shorter than the leaves; involucre about half the length of the 5-6- 

 fljwered head, 4-5 parted ; the segments somewhat lobed, obtuse ; calyx much 

 shorter than the corolla, cleft almost to the base ; the teeth subulate, very un- 

 equal ; vexillum free, covering the wings ; legume sessile, 6-seeded. 



California, Douglas .'—Plant 4-6 inches high. Leaflets rery small, on 

 slender petioles. Peduncles axillary. Head less than half an inch diametsr. 



