248 University of California Publications in Botany [VOL. 9 



31. LEGUMINOSAE (PULSE FAMILY) 



Leaves digitate. 



Leaves trifoliate; flowers in heads; anthers uniform 1. Trifolium 



Leaves not trifoliate; flowers in racemes; anthers dimorphic 2. Lupinus 



Leaves pinnate. 



Flowers in umbels; pods linear, never inflated 3. Hosackia 



Flowers in racemes; pods broad and usually more or less inflated. 4. Astragalus 



1. TRIFOLIUM 



Heads involucrate; flowers white with dark purple centers 1. T. monanthum 



Heads naked; flowers reddish or purple. 



Plants almost glabrous; flowers at length reflexed. 



Ehachis produced as a spur above the head of the nearly sessile, numerous 



(7-12) flowers 2. T. Kingii 



Ehachis not produced above the few-flowered (3-4) head of pedicelled 



flowers 3. T. Bolanderi 



Plant pubescent; flowers always erect 4. T. longipes 



1. Trifolium monanthum Gray, Proc. Am. Acad., vol. 6, p. 523. 

 1866. 



Type locality. "Moist bank by soda springs, Tuolumne River, 

 alt. 8,700 feet." 



Ra/nge. Sierra Nevada. 



Zone. Canadian to Arctic-alpine. 



Specimens examined Slide Mountain, Washoe County, Nevada, 

 7,600 feet, Heller 10200 ; Snow Valley, Ormsby County, Nevada, 2,460- 

 2,615 m., Baker 1282; Mt. Rose, 10,000 feet, Kennedy 995; Soda 

 Springs, Nevada County, M. E. Jones 57 ; Yuba Pass, Sierra County, 

 6,500 feet, Hall and Babcock 4484; Pyramid Peak, base of east side, 

 9,300 feet, Smiley 88a ; Twin Lakes, Alpine County, 8,500 feet, Han- 

 sen 351 ; Tuolumne meadows, Yosemite, 8,600 feet, R. A. Ware 2654c, 

 2631c; soda springs of the Tuolumne, 8,700 feet, Brewer 1704; 

 Tuolumne meadows, foot of Lambert's Dome, 8,600 feet, Smiley 757; 

 base of Mt. Dana, Chesnut and Drew, July 16, 1889 ; Dana-Gibbs 

 divide^ above Yosemite, 11,800 feet, Hall and Babcock 3624 ; meadows 

 near Black Mountain, Fresno County, 10,000 feet, Hall and Chandler 

 613*; Summit Lake, Tulare County, Culbertson (B 4344) ; Hockett's 

 meadows, Tulare County, Culbertson (B4457); Mineral King, 2750 

 m., Coville and Funston 1473 ; Independence Lake, Sierra County, 

 7,000 feet, Hall and Babcock 4543.* 



* These collections represent T. monanthum f. spatiosum McDermott (Rev. N. 

 Am. Trifolium, p. 98. 1910), differing from the type form in lengthened calyx 

 teeth. 



