LEGUMINOS^E. (PULSE FAMILT.) 89 



Synopsis. 



TW3B I LOTEJE. Stamens monadelphous or diadelphous (9 & 1). Pod continuous 

 and 1-celled, or sometimes 2-celled lengthwise. Cotyledons becoming green leaves in 

 germination. Not twining, climbing, nor tendril-bearing. (Wistaria is an exception in 

 its climbing stems.) \ 



Subtribe 1. GENISTE^E. Stamens monadelphous : anthers of 2 forms. Leaves simple or 



palmately compound. 



1. LUPINUS. Calyx deeply 2-lipped. Keel scythe-shaped. Pod flattish. Leaves palmate. 

 2 CROTALARIA. Calyx 5-lobed. Keel scythe-shaped. Pod inflated. 



3. GENISTA. Calyx somewhat 2-lipped. Keel straight. Pod flat. Leaves simple. 



Subtribe 2 TRIFOLIE^B. Stamens diadelphous (9 & 1) : anthers uniform. Leaves palmately 

 or rarely pinnately 3 - 5-foliolate ; the earliest ones in germination after the cotyledons 

 alternate ! Herbs or scarcely shrubby plants. 



4. TRIFOLIUM. Flowers capitate. Pods membranaceous, 1 - 6-seeded. 



6. MELILOTDS. Flowers racemed. Pods coriaceous, wrinkled, 1 - 2-seeded. 



6. MEDICAGO. Flowers racemed or spiked. Pods curved or coiled. 



Subtribe 3. PSORALE^E. Stamens monadelphous or diadelphous. Pod 1-seeded and inde- 

 hiscent, mostly included in the calyx, rarely 2-seeded. Plants sprinkled with dark dots 

 or glands. Earliest true leaves opposite. 



7. PSORALEA. Corolla truly papilionaceous. Stamens 10, more or less diadelphous, half of 



the anthers often imperfect. 



8. DALEA. Corolla imperfectly papilionaceous. Stamens 9 or 10, monadelphous ; the cleft 



tube of filaments bearing 4 of the petals about its middle. 



9. PETALOSTEMON. Corolla scarcely at all papilionaceous. Stamens 5, monadelphoua ; 



the cleft tube of filaments bearing 4 of the petals on its summit. 



10. AMORPHA. Corolla consisting of only one petal ! the standard. Stamens 10, monadel- 



phous at the base. 



Subtribe 4. GALEGE^:. Stamens mostly diadelphous. Pod several-seeded, at length 2-valved, 

 1-celled. Leaves pinnate. 



11. ROBINIA. Wings of the corolla free from the keel. Pod flat and thin, margined on one 



edge. Trees or shrubs : leaflets stipellate. 



12. WISTARIA. Wings free from the falcate keel. Pod tumid, marginless. Woody twiners : 



leaflets not stipellate. 



13. TEPHROSTA. Wings cohering with the keel. Pod flat, marginless. Herbs. 



Subtribe 6. ASTRAGALE^E. Stamens diadelphous. Pod 2-celled lengthwise by the intro- 

 flexion of the dorsal suture, or 1-celled with one or the other suture somewhat turned 

 inward. Leaves pinnate. 



14. ASTRAGALUS. Keel not pointed. Herbs, or low scarcely woody plants. 



TRIBE II. HEDYSAREJE. Stamens monadelphous or diadelphous. Pod (loment) 

 transversely 2 - several-jointed, the reticulated 1-seeded joints remaining closed, or some- 

 times reduced to one such joint. 



* Leaves pinnate, with several leaflets. 



16. .ESCHYNOMENE. Stamens equally diadelphous (5 & 5). Calyx 2-lipped. Pod several- 

 jointed. 



16. HEDYSARUM. Stamens unequally diadelphous (9 & 1). Calyx 5-cleft. Pod several- 



jointed. 



* * Leaves pinnately 3-foliolate. 



17. DESMODIUM. Stamens diadelphous (9 & 1) or monadelphous below. Calyx 2-lippod 



Pod several-jointed. Flowers all of one sort and complete. Leaflets stipellate 

 8* 



