PEA FAMILY I4I 



veinlets prominent; stipules large, toothed. Heads white and 

 purple, Y± in. across, on peduncles 1 or 2 in. long; involucre 

 deeply cut into awl-shaped lobes. — Grassy places at moderate 

 altitudes; considered by some botanists to be a form of 

 T. involucratum Willd. 



5. T. variegatum var. paucifldrum McDer. Stems very 

 slender, 9 in. or less high. Leaflets obovate, obtuse, ^ in. or 

 less long, minutely toothed. Heads purplish, 1 to 7-flowered, 

 % in. or less broad, on peduncles rarely exceeding y in.; 

 involucre irregularly cleft. Pod 2-seeded. (T. geminiilorum 

 Greene. T. pusillum Greene.) 



The weak stems of this clover, which is widely distributed 

 except in the high mountains, are commonly reclining or sup- 

 ported by other plants. It is best distinguished by the in- 

 volucre which, although evident, is smaller than in any other 

 species except no. 1 and subtends but few flowers. 



6. T. microcephalum Pursh. Small-headed Clover. Stems 

 weak, spreading, 3 to 15 in. long, the herbage loosely hairy. 

 Leaflets spatulate and obcordate, y in. or less long, *4 m - or 

 less wide, toothed toward the apex; stipules ovate, tapering 

 to a slender tip, mostly entire. Flower-heads rose-color to 

 white, usually y 3 in. across, on peduncles y to iy in. long; 

 involucre cup-shaped, with 7 to 10 nearly entire lobes. — Com- 

 mon, especially in the lower parts of our district. 



7. T. longipes Nutt. Stems stout, 3 to 12 in. high, the 

 dense foliage often forming a sod, the herbage pubescent. 

 Leaflets linear-oblong (early ones roundish), acute, y± to 1*4 

 in. long, sharply toothed. Heads purplish, becoming brown, 

 dense, ^ to 1 in. across; flowers nearly sessile, permanently 

 erect. Peduncles stout, 2 or 3 in. long. — In meadows from 

 4600 ft., as at Lake Eleanor, nearly to timber-line. 



8. T. pratense L. Red Clover. Stems stout, erect, y 2 to 2 

 ft. high, the herbage glabrous. Leaflets large, ovate to ellip- 

 tic, nearly or quite entire. Heads large, conic. — Introduced 

 and running wild near the settlements. 



9. T. breweri Wats. Stems weak but usually ascending, 

 6 to 18 in. long, leafy throughout, the herbage sparsely pu- 

 bescent. Leaflets oblanceolate to roundish, *4 to ^4 in- long, 

 toothed. Flowers whitish or purplish, few and loose in the 

 head, slender-pediceled, becoming reflexed. Peduncles y 2 to 

 2 in. long, spreading. 



"Clark's, Yosemite Valley" is the locality where this species 

 was first discovered. It is now known to be fairly common 



