FABACEAE. 167 



lanceolate, longer and narrower: corolla pale-purple, turning green; standard 

 broadly obovate, 5-6 mm. long: loment -joints about as wide as long, obliquely 

 obovate. S. Bare, in open woods. Schists. 



9. M. Dillenii (Darl.) Kuntze. Stems glabrous or sparingly pubescent: 

 stipules subulate: leaflets 4-10 cm. long; blades oblong or oblong-ovate, not 

 scabrous: lateral calyx-lobes lanceolate, the lower lobe longer but about as 

 wide: corolla bright-purple; standard narrowly obovate, 910 mm. long: 

 loment- joints obliquely rhombic, much longer than wide. Common, in thickets 

 and woods. 



10. M. canadensis (L.) Kuntze. Stems pubescent: stipules lanceolate-linear: 

 leaflets 4-10 cm. long; blades oblong or oblong-lanceolate, pubescent beneath: 

 upper calyx-lip deeply notched; lateral calyx-lobes subulate-lanceolate, longer 

 than the tube, the lower one scarcely longer: standard narrowly obovate, 8-10 

 mm. long: loment- joints obliquely obovate. Common, on creek and river 

 banks, and on edges of woods. 



11. M. rigida (Ell.) Kuntze. Stems minutely pubescent: leaflets 2.5-8 cm. 

 long; blades ovate-oblong or elliptic, pubescent and reticulate beneath: lateral 

 calyx-lobes deltoid, acute, the lower lobe triangular: standard 45 mm. long: 

 stipe of the loment much less than i as long as the joints. S. Not very 

 common, in dry thickets. Schists. 



12. M. ofotusa (Muhl.) Vail. Stems hirsute or minutely pubescent: leaflets 

 1-2.5 cm. long; blades orbicular-ovate or oval, sparingly pubescent beneath: 

 lateral calyx-lobes deltoid, acute, the lower lobe lanceolate: standard 4-5 mm. 

 long: stipe of the loment i as long as the joint. Common, in dry soil, often 

 on hillsides. 



13. M. marylandica (L.) Kuntze. Stems glabrous or rarely with scattered 

 hairs: stipules subulate: leaflets 1-2.5 cm. long; blades ovate or sometimes 

 suborbieular or elliptic, glabrous or nearly so: lateral calyx-lobes ovate, obtuse, 

 the lower lobe scarcely longer: standard 3.5-4.5 mm. long: loment-joints 

 oblique. S. Frequent, in dry soil. Schists. 



14. LESPEDEZA Michx. Herbs or shrubs. Leaflets 3 or rarely 1. 

 Flowers perfect, but sometimes partially apetalous. Calyx 2-lipped, the 2 

 upper lobes more or less united. Corolla pink, purple, yellow, or white: 

 standard with a broad blade: blades of the wings and the keel-petals auricled 

 on one side, long-clawed. Ovary turgid. Loment with 1 or 2 joints. Sum. 

 BUSH-CLOVER. 



Annual plants : stipules ovate : calyx-lobes about as wide as long. 1. L. striata. 

 Perennial plants : stipules lanceolate : calyx-lobes longer than 



wide. 



Plants with both petaliferous and apetalous flowers : co- 

 rolla purple or purplish : pod manifestly surpassing 

 the calyx. 



Flower-clusters on slender peduncles which generally sur- 

 pass the leaves. 

 Petaliferous flowers in close spike-like clusters or 



capitate. 



Plants with slender trailing or diffusely procum- 

 bent stems : pods suborbieular, abruptly 

 pointed. 

 Upper calyx-lip deeply notched : stems glabrous 



or pubescent with appressed hairs. 2. L. repens. 



Upper calyx-lip shallowly notched : stems woolly 



or pubescent with downy hairs. 3. L. procumbens. 



Plants with rather stout erect stems : pods elliptic, 



acuminate. 4. L. Nuttallii. 



Petaliferous flowers loosely paniculate. 5. L. violacea. 



Flower-clusters of both the petaliferous and apetalous 



flowers sessile or nearly so. 

 Upper calyx-lobes slightly united, subulate : leaflets 



with oblong, oval or suborbieular blades. 6. L. Stuvei. 



