PAPILIONACEAE 117 



loments straight on the back, deeply indented below into 2-3 joints.— Dry 

 woods near Courtney. Local. July-September. 



2. M. grandiflora (Walt.) Kuntze. Leaves crowded at summit of 

 stem, from which arises the naked panicle : leaflets round-ovate, 2^-6^ 

 long : loments 1-3-jointed.— Abundant in dry woods throughout. June- 

 August. 



3. M. canescens (L.) Kuntze. 2°-5° high, villous-pubescent : leaf- 

 lets blunt, whitish-pubescent beneath : loments 4-6-iointed, the joints 

 unequally rhomboid.— Frequent in dry sandy grounds, especially along 

 the Missouri River. July-September. 



4. M. bracteosa (Michx.) Kuntze. 3°-6° high, very smooth below : 

 leaflets 2^-6^ long, ovate-lanceolate, acuminate : loments S-T-jointed, 

 the joints rhomboid-oblong.— Occasional in thickets throughout, but not 

 common. July-August. 



5. M. longifolia (T. & G.) Vail. 2°-5° high, minutely pubescent: 

 leaflets 2^-4' long, ovate-lanceolate, acuminate, pubescent : loments 4-6- 

 jointed, the joints triangular.— Rather common in rocky woods, especially 

 in the northwestern part. July-September. 



6. M. Canadensis (L.) Kuntze. 2°-6° high: leaflets V/S^ long, 

 oblong-lanceolate, obtuse, appressed-pubescent beneath : flowers large : 

 loments 3-5-jointed, the joints obliquely oval. — Occasional in rich woods 

 and prairies throughout the western part. July-September. 



7. M. Illinoensis (A. Gray) Kuntze. 3°-5° high, rough-pubescent : 

 leaflets l'i^-3^ long, ovate-lanceolate, obtuse, coriaceous, scabrous above 

 and strongly reticulated beneath : loments 6^^-12^^ long, 3-6-jointed, the 

 joints oval. — Frequent in dry barrens and on prairies throughout the 

 southern part. June- July. 



8. M. sessUifolia (Torr.) Kuntze. 2°-4° high, pubescent: leaves 

 nearly sessile, the leaflets linear-oblong, obtuse, pubescent and usually 

 strongly reticulated beneath : loment 1-3-jointed, the joints obliquely 

 obovate. — Frequent in barrens, especially in the southern part. July- 

 August. 



9. M. paniculata (L.) Kuntze. 2°-4° high, nearly glabrous : leaflets 

 oblong-lanceolate, smooth, blunt: loment 3-6-jointed, the joints obliquely 

 triangular. — Abundant, especially in low woods. July-September. 



Var. pubens (T. & G.) Vail. Leaflets appressed-pubescent beneath : 

 loments strongly constricted above and below. — Sandy woods along Blue 

 near Martin City. 



10. M. Dillenii (Darl.) Kuntze. 2°-3° high, pubescent: leaflets 

 oblong-ovate, V-2^ long, pubescent beneath, blunt : loment 2-4-jointed, 

 the joints triangular.— Common in dry soil. July-September. 



11. M. rigida (Ell.) Kuntze. l°-3° high, rough-pubescent: leaflets 

 oblong-ovate, scabrous above, pubescent beneath, blunt, l(y^-20^^ long : 

 loment 1-3-jointed, the joints obliquely oval.— Dry hills along the Little 

 Blue. Rare. August-September. 



