LEGUMINOSE. (PEA FAMILY.) 39 
** Leaves unequally pinnate; leaflets entire; no tendril. 
‘Flowers umbellate or solitary, axillary..........-...... O@ncaesiy ements Hosackia. 7 
Flowers white or pinkish. Pod short, prickly.............. wists eiaeren Glycyrrhiza. 10 
Pods mostly inflated or nearly 2-celled.............000 sia iabars ......-Astragalus, 11 
** * Leaves terminated by a tendril or bristle or an imperfect leaflet. 
Style filiform, hairy around the apex...........seecseeeeceeres seis sonia -Vicia. 12 
Style flattened dorsally toward the apex, hairy on the inner side, usually 
twisted half round..... eiosebisls Bales edie weap wets sede Sretsiaret “sige wa bhyrus, 13 
1. THERMOPSIS, R. Br. 
Calyx companulate, cleft to the middle. Standard roundish, shorter than the oblong 
wings, the sides reflexed; keel nearly straight, its petals somewhat united, equalling the 
wings. Perennial herbs with the aspect of Lupine; leaflets entire; stipules foliaceous; 
flowers large in long terminal racemes, with persistent bracts. 
1. T. Californica, Wat. Woolly-tomentose; stipules lanceolate; leaflets obovate to 
-oblanceolate, an inch or two long; bracts ovate; pod hairy. 
2. PICKERINGIA, Nutt. 
Calyx campanulate, turbinate at the base, repandly 4-toothed. Petals equal; standard 
-orbicular, the sides reflexed; wings oblong; keel petals oblong, distinct, straight, obtuse. 
A low stout much branched spinose shrub; leaves evergreen, small, nearly sessile, 
1-3-foliolate, without stipules; flowers large, solitary, axillary, nearly sessile. 
1. BP. montana, Nutt. Spreading, densely branched, 4 to 7 ft. high, silky-tomentose 
or smooth; leaflets 3 to 9 lines long; flowers from light cinnamon-red to purple, 7 to 9 
lines long; stamens persistent. 
3. LUPINUS, L. Lurrine. 
Calyx deeply bilabiate, bibracteolate. Standard broad, the sides reflexed; wings united 
at the ends, enclosing the incurved beaked keel. Stipules adnate to the petioles; leaflets 
entire. Flowers in terminal racemes, verticillate or scattered, bracteate. 
A large and difficult genus. 
* Annuals, 
Ovules 2; bracts persistent; flowers in whorls; leaves long petioled, approximate; stout. 
Long-villous; flowers mostly purple.....-..---+eeceeeececueees L. microcarpus. 15 
Smoother; flowers yellow to white.....-.....0.2eeeeeeeeeeee ....-u. densiflorus. 16 
Ovules several; bracts deciduous; flowers in whorls; petioles 1 to 3 times the length of 
‘the leaflets. 
Puberulent; leaflets broad, smoother above; bracts short................L. affinis. 8 
