PIPER—FLORA OF THE STATE OF WASHINGTON. 349 
_ ZONAL DISTRIBUTION: Humid Transition. 
Allen’s 59 is considered a distinct subspecies by Professor Greene, Osmaronia cerasiformis 
nigra,@ based principally upon the drupes which seem to lack the usual glaucous coating. 
FABACEAR. Bean Faminy. 
Stamens 5, monadelphous; leaves pinnate .........-.-------.- PETALOSTEMUM (p. 350). 
Stamens 10. 
Filaments distinct; leaves trifoliolate -.......-....---.--- THERMOPSIS (p. 349). 
Filaments united, either monadelphous or diadelphous, 9 and 1. 
Anthers of two forms, round and oblong. 
Leaves digitate with 5 to 11 leaflets; ours herbs... Lupinus (p. 350). 
Leaves with solitary leaflets; spiny shrub... ...-- ULeEx (p. 358). 
Anthers all alike. 
Leaves digitate, or if pinnate then trifoliolate. 
Pods curved or coiled; flowers in spikes....... MEpicaco (p. 363). 
Pods straight. 
Flowers in long racemes. ....-.-.------- MELixotvs (p. 358). 
Flowers in heads or head-like umbels..... TrrroLium (p. 358). 
Leaves pinnate; leaflets mostly more than 3; no ten- 
drils. 
Herbage dotted with conspicuous glands. 
Leaflets 3; pods not spiny. .....-..-.--- PsoRALEA (p. 363). 
Leaflets many; pods spiny...-...-.-.--- GLYCYRRHIZA (p. 364). 
Herbage not dotted with conspicuous glands. 
Leaves unequally pinnate, not tendril bear- 
ing. 
Flowers umbellate or solitary; pods 
linear ......222...-------------- Hosackia (p. 364). 
° Flowers spicate or racemose, rarely 
solitary, then pods not linear. 
Pod a loment.......-.-.-.----- HeEpysarvM (p. 366). 
Pod not a loment. 
Keel of the corolla acute or 
subulate at apex.......-- ARAGALLUS (p. 367). 
Keel of the corolla obtuse at 
apeX....-.---------26-- Puaca (p. 367). 
Leaves abruptly pinnate, usually tendril- 
bearing. 
Style filiform, hairy only near the tip. . Viera (p. 374). 
Style flattened, hairy on the inner side. Laruyrus (p. 375). 
THERMOPSIS. 
1. Thermopsis montana Nutt.; Torr. & Gr. Fl. 1: 388. 1840. 
Type Locatity: “High valleys of the Rocky Mountains, in bushy places by streams, near 
the line of Upper California.” Collected by Nuttall. 
Rance: Washington to Montana and Arizona. 
SPECIMENS EXAMINED: Walla Walla region, Brandegee 695. 
This or the following was referred to T’.. fabacea (Pall.) DC. by Hooker.® 
la. Thermopsis montana ovata Robinson, subsp. nov. 
Leaflets broader than in 7’. montana, ovate. 
Rance; North Idaho and adjacent Washington and Oregon. 
aGreene, Pittonia 5: 309. 1905. ob Fl. Bor. Am. 1: 128. 1838. 
