PEA FAMILY. 227 



16. T. repens L. White Clover. Glabrous, stems erect or spreading from 

 stoloniferous roots; leaflets broadly obcordate, ovate or orbicular; stipules 

 ovate-lanceolate, acute; heads globose, completely reflexed in fruit; flowers 

 white ; calyx-teeth short, subulate, entire. 



Native of Europe, an escape from gardens. 



17. T. hybridum L. Alsike Clover. Sparsely, pubescent, stems short, 4 

 to 8 in. high; leaflets large, ovate to orbicular; flowers light pink, the pedicels 

 pubescent ; calyx sparsely pubescent with appressed hairs. 



Closely related to T. repens but a much stouter plant. An escape from 

 gardens. 



18. T. pratense L. Ked Clover. Sparsely pubescent, branching at the 

 base, % to 2 ft. high; petioles short, the leaves subtending the head sessile; 

 leaflets large, ovate to elliptic, entire to crenulate; heads large, conical; 

 flowers deep pink or red; calyx-tube characteristically nerved at the base of 

 teeth; pod 2-seeded. 



Native of Europe. Naturalized in low valleys and met with occasionally 

 along obscure mountain passes. 



19. T. albopurpureum T. & G. Slender, ascending or slightly decumbent, 

 % to 1% ft. high; heads hemispherical, small, the terminal single, on long 

 peduncles, the lateral on short peduncles; leaflets cuneate-oblong, obtuse; 

 flowers dark purple; corolla slightly longer than the calyx-teeth; pod 1 to 2- 

 seeded. 



Common in the Coast Eanges, very variable. Var. neolagopus McDer. 

 Ascending, stems rigid; heads 5 lines wide, 10 lines long, in conical spikes; 

 corolla dark purple, as long as the calyx: Coast Ranges. Var. neolagopus 

 forma argillorum Jepson. Stems rigid, V :i to 1 ft. long; heads oblong, cylin- 

 drical, on very long peduncles; calyx exceeding the corolla. — Dry hills of the 

 North Coast Ranges. The entire plant has a dusty appearance (var. argil- 

 lorum Jepson). 



20. T. macraei H. & A. Somewhat decumbent or spreading, much branched 

 at the base, softly pubescent throughout; stems stout, often wiry, 4 to 12 in. 

 high ; heads sessile in pairs, subtended by the stipules and sessile leaves ; flowers 

 purple ; corolla as long or longer than the plumose calyx. 



Along the coast: Monterey; San Francisco; Pt. Reyes. Closely related to 

 the last but not as common. May-June. 



21. T. dichotomum H. & A. Tall and stout, dichotomously branched 

 above, simple or twice branched at the base, % to 2 ft. high; leaflets very 

 large, elliptical, rhomboid or ovate, densely pubescent ; heads large, globose, 

 % to l 1 ^ in. in diameter; flowers purple, white-tipped; calyx densely pubescent, 

 shorter than the corolla; pod 2-seeded. — (T. amoenum Greene.) 



Valleys from Elmira southwesterly to Napa Junction, Olema and Bodega. 

 A handsome but rare species, abundant some seasons, disappearing other 

 seasons. May-June. Dr. Jepson compared material with the type at Kew, 

 England. Forma petrophilum McDer. Smaller, the stems and entire plant 

 more slender than the species ; heads globose, 5 lines long or less ; mature 

 flowers longer than the calices. — Rocky summits from Napa to Santa Clara 

 Co. Not abundant (T. petrophilum Heller). 



22. T. olivaceum Greene. Ascending, 8 to 12 in. high, glaucous through- 

 out ; peduncles stout ; leaflets cuneate-obovate ; heads ovate-truncate ; flow- 

 ers completely hidden by the long and pubescent calyx-teeth ; calyx-tube 1 to 

 iy 2 lines long, conspicuous at the base of the heads; pod glabrous, 1-seeded. 



