DIADELPHIA. DBCANDIUA. 99 



Suffrnticose or more commonly herbaceous, erect or 

 diffuse; leaves pinnate; stipules distinct from or connected 

 vith the petiole; petioles in sonne species rig-idly persist- 

 ent, or spinescent; flowers g-Iomera'e or spiked, axillary 

 and terminal, purple, ochroleucous, or yellow. 



Species. 1. A. cavoUnicums. 2. canadensis. Both these 

 species are r.nusually tail with dense spikes of ochroleu- 

 cous fiov/ers. 3. ^l^.ber. iiather low, and cnulescent; leaf- 

 lets (about 10 or 11 pair), oblong-eilipiic, obtuse or emar- 

 ginate, every where smooth; peduiicuiate loose spikes lon- 

 ger than the leaves; flowers whitish, pedicellate; legumes 

 distant, smooth, spreading-, depressed and incurved. Hab. 

 In the sandy forests of Georg-ia and South Carolina. Seldom 

 more than' a foot high; fnilting peduncles much longci* 

 than the leaves; legume partly biiocular and somewhat 

 rugose. 4. alpinus. 5. seamdus. 



6. * missourie?2s2s. Nearly stemless, partly diffuse; !^t"- 

 pules cauline, ovate; leaflets small, obnvate-cUiptic, canes- 

 cently villous; peduncles a little longer than the leave;; 

 spikes capitate; calix blackish and strigose; legume oblong, 

 acuminate, nearly smooth and transversely dilated. Hab. 

 On hills throughout Upper Louisiana; flowering in May. A 

 very elegant species with deep violet purple flowers, (there 

 is also a white flowered variety occasionally to met With\ 

 scarcely 6 inciies high, pnbescenae v/iiitisli and somewhat 

 shining; leaflets 5 to 10 pair, aijout the size of Thyme, 

 leaves obtuse; capitate spike ab';wt an inch long; flowei-g 

 10 to 12, large for the size of tlie plant; bractes ovate, 

 shorter than the calix; carina obtus-; legume black and 

 coriaceous, siibup.ilocular, lov/er sutire inilecfed. Oxvtro- 

 pis argentata. Fh. 2. p. 473. but neither the same plant, 



(which I have examined in Pall.:s's hcibarium) nor the 

 samiC genus. 



7. hvpjgloith. _ On llie low and level plains of the Mis- 

 .eouri, commencing about tlie onfl-ieuce of the river 

 .fauke, and contin-Jing upwards probably to the Mountains; 

 flowering in May. It does not sensibly differ in any par- 

 ticular from the European plar.t. 8. Luxmanni. Hab, 

 On t!ie hills of tlie M.ssouri, forming ;i hixuriant and nu- 

 tritive herbage fci- herbivorous animals, and would proba- 

 bly be worth cultivating up'm liglsl ^n I otherwise unpro- 

 ductive soils. Obs. Perennial; steins diffuse and adscen- 

 dent, grooved; bractes caul. ne, membranaceous and acu- 

 minate; leaflets a little pubescent, oblong, C to 8 pair; pe- 

 duncles axlUai-y and terminal, m-ucb longer tlian the 

 leaves, thick and grooved, spike crowded, su'boval. bractes 

 acumiriate^ nearly as long a^ tue calix which is blackish 



