626 FABACEAE 



cuneate at the base, on petiolules about 3 mm. long : racemes single or clustered, 15-30 cm. 

 long : calyx glabrous ; lobes ciliate, the two upper rounded, the lower sharp-pointed : 

 standard reniform, about 6 mm. long, broader than long, short-clawed : pods about 5 mm. 

 long, rounded on the ventral edge, nearly straight on the dorsal, marked with numerous 

 dark glands. 



On river banks and moist prairies, Arkansas to eastern Texas. Spring. 



12. Amorpha glabra Desf. A nearly glabrous shrub 1-2 m. high. Leaves 7-16 cm. 

 long ; leaflets numerous, the blades elliptic-oblong, 9-18 mm. long, rounded at both ends, 

 dotted with dark glands, the petiolules about 1 mm. long : racemes one or several, 9-20 cm. 

 long, nearly glabrous : calyx 3-4 ram. long ; lobes ciliate, tlie two upper rounded, the lower 

 subulate-pointed : pods 4-5 mm. long, rounded on the ventral edge, nearly straight on the 

 dorsal, marked with numerous dark glands. 



In the coastal region, North Carolina to Florida. Summer. 



31. EYSENHARDTIA H.B.K. 



Shrubs or shrubby herbs, with glabrous or pubescent and often glandular-punctate 

 ioliage. Leaves alternate : blades unequally pinnate : leaflets numerous, with minute 

 stipels. Flowers perfect, in terminal simple or panicled spike-like racemes. Calyx pedi- 

 celled : lobes nearly equal. Corolla white : petals erect, distinct, nearly equal in length ; 

 standard with blade broadened upward, concave ; wings and keel-petals similar. Stamens 

 10 : filaments united into a cleft tube. Anthers similar. Ovary nearly sessile. Style 

 stout, hooked at the end. Stigma introrse. Ovules 2-3, or rarely 4. Pod flattened, 

 .straight or curved. 



1. Eysenhardtia amorphoides H.B.K. A branching shrub 1-2.5 m. tall, with a 

 whitish bark and more or less pubescent young foliage. Leaves numerous, 3-8 cm. long, 

 short-petioled : leaflets 11-29, usually 20, the blades oblong or oval-oblong, 2-10 mm. 

 long, obtuse or retuse at the apex, reticulated above, paler and barely reticulated beneath : 

 racemes spike-like, 2-10 cm. long, sessile or nearly so : pedicels usually 1 mm. long : calyx 

 2-3 mm. long, turbinate ; lobes much less than 1 mm. long : corolla 6-7 mm. long : pods 

 about 1 cm. long, erect, curved. 



On plains and prairies, Texas and adjacent Mexico. Spring and summer. 



32. PAROSELA Cav. 

 Herbs or shrubs, with glandular foliage and erect or prostrate stems. Leaves alter- 

 nate : blades unequally pinnately compound, or 3-foliolate : leaflets relatively small. 

 Flowers perfect, in terminal or lateral spikes. Calyx-lobes nearly equal. Corolla white, 

 purple or yellow : standard broad, above a long claw ; blade cordate or auricled at the 

 base : wings and keel-petals commonly longer than the standard, their claws adnate to the 

 staminal tube. Stamens 10 or 9, monadelphous. Anthers alike. Ovary sessile or short- 

 stalked. Styles ubulate. Ovules 2 or 3 in a cavity. Pod membranous, included in the 

 calyx, usually indehiscent. Seeds mostly solitary. [Dalea Willd.] 



Calyx pubescent all over. 



Foliage glabrous to the inflorescence. 



Leaf-blades mostly 5-many-foliolate : corolla white, purple or reddish. 

 Annual or perennial herbs. 



Leaflets numerous : annual plants. 1. -P. Dalea. 



Leaflets 7-13 : perennial plants. 



Spikes more or less interrupted, not cylindric. 2. P. enneandra. 



Spikes continuous, cylindric or oblong. 



Calyx-lobes longer than the tube. 3. P. pogonathera. 



Calyx-lobes shorter than the tube. 4. P. lasiathera. 



Spreading shrubs. 5. P.formosa. 



Leaf-blades mostly 3-foliolate : corolla yellow. 6. P. HaUii. 



Foliage variously pubescent. 

 Spikes stout and dense. 

 Leaflets appressed-silky. 



Calyx-lobes subulate or bristle-like. 



Calvx-lobes as long as the tube or little longer. 



Spikes usually long-peduncled and solitary on the branches. 7. P. aurea. 



Spikes short-pedurieled and several on the branches. 8. P. nana. 



Calyx-lobes about twice as long as the tube. 9. P. Wrightii. 



Calyx-lobes lanceolate. 10. P. argyrea. 



Leaflets villmis. 11. P. mollis. 



Spikes loosely flowered. 

 Leaflets 9-13. 



Calyx-lobes dilated at the base, the longer ones shorter than the tube. 12. P. lanata. 

 Calyx-lobes subulate, the longer ones surpassing the tube in length. 13. P. Dotningensis. 



Leaflets .V9. 14. P. thijrsiflora. 



Calyx glabrous except the ciliate lobes. 15. P. frutetcens. 



