TRIFOLIIM. LEGUMIXOS.K. 133 



appressed hoary pubescence throughout: leaflets 3-5, obovate to oblanceo- 

 late, coarsely serrate, 3-6 lines long: stipules mostly scarious and inflated ; 

 peduncles shorter than the leaves ; flowers few, 3-4 lines long, on short 

 pedicels : teeth of the calyx linear, but little longer than the tube, a third 

 shorter than the petals : ovary densely villous, 2-ovuled. In open forests, 

 Blue Mountains of Oregon. 



2. KiTiUFOLirM. Heads not involucrate: peduncles termi- 

 nal or apparently so : flowers sessile or nearly so. 



* More or less pulx'seent : teeth of the calyx longer than the tube. 

 very narrow : stipules linear or lanceolate, acuminate. 



- Teeth of the calyx plumose or hairjr. 

 " Flowers never reflexed. 



T. alhopii rpiireiim T. & G. Fl. i, 31M. T. Mncnei of authors not II. A 

 A. Somewhat villous, with appressed or spreading hairs: stems slender, 

 branching, 0-12 inches high : from an annual root: stipules ovate to lanceo- 

 late, long-acuminate : leaflets obovate to narrowly oblong, obtuse or re- 

 tuse, serrulate above the middle, 2-0 lines long: flowers in dense, ovate 

 slender-peduneled heads, sessile, dark purple; calyx very villous, the 

 straight filiform plumose teeth as long as the petals, somewhat spreading: 

 petals scarcely connected : ovary pubescent : pods 1 -seeded. On dry hill- 

 sides, western Washington to California. 



T. PRATEXSE L. ^p. 1082. (RED CLOVER). Perennial: stems ascending, 

 somewhat hairy, 1-3 feet long : stipules broadly lanceolate, membrana- 

 ceous, nerved, setaceously acuminate: leaflets obcordate or oblong-ovate, 

 often emarginate, nearly entire, glabrous above, 1-2 inches long: heads of 

 flowers ovate, dense, nearly sessile, bracteate; teeth of the calyx setaceous, 

 hairy, the lower one much longer than the other four, which are equal 

 and about half as long as the corolla ; petals purplish-red, all united into a 

 tube at the base. Roadsides and cultivated fields, common. 



T. longripes Xutt. T. & G. Fl.i,314. Glabrous or nearly so: stems 

 erect or ascending from spreading perennial roots, 0-20 inches high, stout: 

 stipules mostly narrow, entire or 'sparsely toothed, apiculate: leaves long- 

 petioled ; leaflets lanceolate to ovate, entire or minutely denticulate, 1-2 

 inches long, acute or obtuse, apiculate, strongly veined: flowers white, in 

 dense ovate long-peduncled heads, sessile or nearly so ; tube of the calyx 

 sparingly villous, a line long, the setaceous teeth minutely plumose ; 5-7 

 lines long, nearly equalling the corolla; upper petal free, the others united 

 with the staminal tube: ovary pubescent at the apex, shortly stipitate, 

 2-4-ovuled. In wet places and about springs, Brit. Columbia to California 

 and the Rocky Mountains. 



Var. latifoliiiin Hook. Lond. Journ. Bot, vi, 209. Often low: leaflets 

 broad: flowers pedicillate, in loose heads. From the Rocky Mountains to 

 the Pacific. 



+ + Flowers at length reflexed. 



T. eriocephalnm Xutt. 1. c. 313. Yillous with spreading hairs, stems 

 erect, 6-10 inches high or more, from a stout perennial root: stipules linear 

 to lanceolate, entire or repand; 12-18 lines long: leaflets oblong to lanceo- 

 late, 1-2 inches long, acutely and minutely serrulate : flowers in dense 

 ovate spikes, yellowish or white, 4-8 lines long; tube of the calyx very 

 short, its filiform plumose teeth abruptly narrowed from a broad base, 

 nearly equalling the petals; claws of the petals united to the staminal 

 tube; ovary hairy, 2-4-ovuled. Common in open places, western Wash- 

 ington and Oregon to northern California. 



T. pliiniosiim Dougl. Hook. Fl. i, 13'), t. 49. ^'ilky-pubescent : stems 



