158 



NORTH AMERICAN FLORA 



[Volume 24 



Terminal racemes developing later than the lower axillary ones. 

 (The monopodial or sympotlial nature of the inflorescence of 

 these species is doubtful, as the axillary racemes are inserted 

 obliquely, neither opposite to nor exactly in the axils of the 

 leaves.) 

 Flowers more than 10 mm. long. 

 Flowers 6-7 mm. long. 

 Stem syrapodial; racemes theoretically terminal, but apparently op- 

 posite the leaves, by the early development of a branch in the 

 uppermost axil which elongates and produces another terminal 

 raceme, which in its turn bears an axillary branch, &c. 

 Calyx-lobes all lanceolate to filiform, equaling or longer than the 

 tube. 

 Petioles 1-3 mm. long; leaflets obovate. 



Petioles 5 mm. long or more, except sometimes in C. litloralis and 

 C. rhodantha, where the leaflets are linear to oblong. 

 Corolla usually 12 mm. long or more; leaflets firm, often 

 somewhat leathery. 

 Leaflets suborbicular or rounded -obovate. 

 Leaflets from linear to oval or rarely narrowly obovate. 

 Corolla 5-12 mm. rarely up to 15 mm. long; leaves not firm. 

 Calyx-lobes unlike, the lowest one subulate, much exceeding the 

 tube, the upper 4 deltoid, scarcely equaling the tube. 



One species. 



J. Oranoifi.okae 



II. Leiocarpae 



III. FOLIOLOSAE. 

 VIII. VlCIOIDES. 



XIII. Chrysophyu.ae. 



XIV. Lindheimerianae. 

 XV. Spicatae. 



.XVI. Pl'RI'l'REAE. 

 XVII. NOCTIFLORAE. 



l.C. gr and i flora 



Leaves glabrous above; racemes terminal and in the upper axil. 

 Bracts subulate; racemes elongate; pods wholly glabrous. 

 Calyx-lobes about equaling the tube; wing-petals oblong. 

 Calyx-lobes distinctly longer than the tube; wing-petals obliquely 

 obovate. 

 Bracts lanceolate, acuminate; racemes short; pods hairy on the sutures. 

 Leaves pubescent above; racemes axillary. 



III. Foi.ioi.osaE 

 Pods glabrous, except on the upper suture. 



Pods pubescent throughout. 

 Stem and leaves strigose. 



Leaflets 13-19; corolla 10-12 mm. long. 

 Leaflets 17-31 ; corolla about 15 mm. long. 

 Stem and luwer surface of the leaves pilose; leaflets 21-31. 



IV. VlRGINIANAE 



Leaflets thin, green on both sides; corolla while or ochroleucous, only tinged 

 with purple. 

 Calyx-lobes rather broad, not subulate. 



Calyx-lobes ovate or ovate-lanceolate; pubescence strictly appressed, 

 silky. 

 Leaflets mostly broadly oblong or elliptic; calyx-lobes not longer 



than the tube. 

 Leaflets narrowly oblong; calyx-lobes longer than the tube. 



Pods and lower surface of the leaflets short-hairy ; corolla about 



10 mm. long. 

 Pods and lower surface of the leaflets long-hairy; corolla 15-18 

 mm. long. 

 Calyx -lobes lanceolate: pubescence of the stem, pedicels, and calyces 

 more or less spreading. 

 Calyx-lobes very narrow, subulate to almost filiform. 

 Bracts lanceolate, acuminate. 



Stem, pedicels, and calyces with silky appressed pubescence. 

 Stem, pedicels, and calyces with tawny spreading pubescence. 

 Bracts subulate or nearly filiform. 

 Leaflets thick, subruriaceous, green above, white-silky beneath. 



V. Toxicariae 

 Corolla less than 2 cm. long. 



Calyx-lobes ovate, abruptly acute or obtusish. 

 Calyx-lobes lanceolate or subulate, acuminate. 



Corolla 15-18 mm. long; banner suborbicular; wings obliquely ob- 

 lanceolate; leaflets strongly veined beneath. 

 Leaflets elliptic or broadly oblong; pod straight; raceme usually 



single. 

 Leaflets linear or linear oblong; pod arcuate; racemes usually 

 several. 



2. C. leiocarpa. 



3. C, calva. 



4. C. cuernavacana. 



5. C. Conzattii. 



5. C. Conzattii. 



6. C. rhodantha. 



7. C. foliolosa. 



8. C. wHltifolia 



9. C. latidens. 



10. C. Mohrii. 



11. C. leucosericea. 



12. C. virginiana. 



13. C. Roseana. 



14. <". leucantha. 



15. C. Thurberi. 



16. C. Seemanni, 



17. ( '. toxii aria . 



18. C. Talpa. 



19. C. tin iiata. 



