142 PEA FAMILY 



in the middle Sierra Nevada, growing in rather dry soil of 

 open pine forests. 



10. T. repens L. White Clover. Stems short, numerous, 

 forming a sod. Leaflets broadly reverse-heart-shaped or 

 roundish. Heads medium-sized, roundish, the flowers white. 

 — Escaped from some of the meadows where introduced for 

 agricultural purposes. 



11. T. bolanderi Gray. Stems 1 ft. or less high, nearly 

 naked save at the leafy branching base, the herbage glabrous 

 throughout. Leaflets narrowly obovate, obtuse, nearly entire, 

 Y\ to Yz in. long. Heads purplish, Yz in. wide, on peduncles 

 2 to 6 in. long. Flowers pediceled, at length reflexed in the 

 head. 



This rare clover is peculiar in having very long peduncles 

 terminated by umbrella-like heads of reflexed flowers. It is 

 known only from above the Yosemite Valley, where it has 

 been found at Westfall's and Peregoy's meadows. The for- 

 mer is the type locality. 



12. T. gracilentum T. & G. Pin-point Clover. Stems erect, 

 slender, ^ to 1 ft. high, the herbage glabrous. Leaflets 

 broadly wedge-shaped, notched at the broad summit, toothed, 

 about Yz in. long. Peduncles 24 to 5 in. long. Flowers pale or 

 purplish, becoming reflexed, thus exposing the pin-like cen- 

 tral stalk. — Of the lowlands, but reaching Wawona. 



13. T. macraei H. & A. Stems stout, often wiry, much 

 branched at base, the herbage grayish hairy. Leaflets wedge- 

 shaped, obtuse, toothed above the middle, ^ to 1 in. long. 

 Heads sessile or on short peduncles, rendered gray by the 

 long hairs of the calyx-teeth. Flowers purplish, permanently 

 erect. — A foothill species reaching Wawona. 



4. HOSACKIA. 

 Herbs with pinnately compound leaves and whitish yellow- 

 ish or purplish flowers borne solitary or in small clusters on 

 bracted peduncles. Calyx-teeth 5, nearly equal. Pod flat or 

 nearly cylindric, several-seeded, never inflated. 



Annuals; peduncles 1 or 2-flowered. 



Leaflets mostly 3 ; stems erect 1. H. americana. 



Leaflets mostly 4 (3 to 7). 



Pods glabrous; flowers minute 2. H. parviflora. 



Pods pubescent; flowers % in. or more long 3. H. strigosa. 



Perennials; several flowers terminal on each peduncle. 

 Stipules large; pods nearly straight, opening at maturity. 



Corolla purplish A. H. crassifolia. 



Corolla yellow and white 5. H. torreyi. 



