212 LEGUMINOSAE. 



Sepals broadly ovate. D. wrangeliana. 

 Sepals lanceolate to ovate. 



Petals small, slightly if at all exceeding the sepals. D. glandulosa. 



Petals large, much exceeding the sepals. D. valida. 



Drymocallis wrangeliana (Fisch. & Lall.) Rydb. {D. oregana (Nutt.) 

 Rydb.) Villous and glandular; stems erect, 60-90 cm. high; basal leaves with 

 7-9 leaflets, these cuneate-obovatc, doubly serrate-dentate, pubescent on both 

 sides, 3-4 cm. long; petioles hairy; cauline leaves gradually reduced upwards; 

 cyme rather loose; calyx glandular-hairy, the sepals ovate, the bractlets lan- 

 ceolate and smaller; petals yellow, oval, 5-7 mm. long. 



In open places mostly at low altitudes in the mountains. 



Drymocallis glandulosa (Lindl.) Rydb. Perennial; stems erect, 40-50 cm. 

 high, sparsely villous and glandular, loosely branched above; basal leaves 

 with 7-9 leaflets, these obovate or orbicular, simply or doubly dentate, sparsely 

 pubescent, 1-3 cm. long; cauline leaves usually with fewer leaflets; flowers 

 10-15 mm. broad, in loose open cymes; calyx somewhat glandular; bractlets 

 shorter than the ovate acute or acuminate calyx-lobes; petals oval or obovate, 

 about as long as the sepals. 



Prairies and open places. 



Drymocallis valida (Greene) Piper. Similar in habit to D. glandulosa; 

 glandular-pubescent throughout; leaflets 7-11, mostly obovate to orbicular, 

 incisely serrate, 3-6 cm. long; cyme rather loose and flat-topped; petals elliptic 

 to suborbicular, one third longer than the sepals. 



Open places in the mountains. 



Family 50. LEGUMINOSAE. Pulse Family. 



Herbs, shrubs or trees; leaves alternate, mostly compound, 

 with stipules; flowers irregular {papilionaceous) (in ours), perfect 

 or sometimes polygamous, in spikes, heads, racemes or panicles; 

 calyx 4-5-toothed or cleft; lobes equal or unequal, sometimes 

 in 2 lips; petals more or less united or separate, perigynous or 

 hypogynous, usually papilionaceous, that is, with the upper or 

 odd petal {standard) larger than the others and usually turned 

 backward or spreading; the two lateral ones {wings) oblique and 

 exterior to the two lower; the last pair connivent and commonly 

 more or less coherent by their anterior edges, forming the keel, 

 which usually encloses the stamens and pistil; stamens 10, rarely 

 5 or many, monadelphous, diadelphous or sometimes distinct; 

 pistil 1, 1-celled or several-celled by the intrusion of partitions, 

 free; ovules 1-many; fruit a legume; endosperm mostly none. 



Stamens distinct. 287. Thermopsis, 213. 



Stamens monadelphous or diadelphous. 



Anthers of two forms, round and oblong. 



Leaves palmate with 5-11 leaflets; plant not 



spiny. 288. Lupinus, 213. 



Leaves with solitary leaflets; plant spiny. 289. Ulex, 217. 



