258 



NORTH AMERICAN FLORA 



[Volume 24 



Leaflets glabrous above, green. 



Calyx black -hairy, its teeth fully half as long as the tube. 



Legume less than 2 em. long; corolla 6-8 mm. long; leaflets 

 small, less than 1 cm. long; plant decumbent-cespitose, 

 less than 2 dm. high. 

 Leaflets 7-17, the terminal one resembling the rest, short- 

 stalked. 

 Pod obliquely oblanceolate, fully 3.5 mm. wide near the 



apex. 

 Pod linear, with parallel sutures, 3 mm. wide. 

 Leaflets 1-5, the terminal one narrowly oblanceolate, fal- 

 cate, gradually tapering into the rachis. 

 Legume 2-2.5 cm. long; corolla about 1 cm. long; plant erect, 

 2-4 dm. high. 

 Pod linear, white-strigose or glabrate. 



Leaflets elliptic or oblong, obtuse, the terminal one 



short-stalked and similar to the rest. 

 Leaflets lanceolate or oblanceolate, somewhat falcate, 

 the terminal one long-stalked and tapering into the 

 rachis. 

 Pod oblanceolate, slightly arched, minutely black-strigulose. 

 Calyx white-hairy, its teeth one third as long as the tube. 

 Pod glabrous. 



Terminal leaflet elongate, tapering into the rachis. 

 Terminal leaflet similar to the rest. 



Pod 1.5-2 cm. long; calyx-teeth one third as long as the tube; 



leaflets linear or lance-linear. 

 Pod 2-2.5 cm. long; calyx-teeth more than one third as long as 

 the tube; leaflets lanceolate to oval. 



5. Stenophylli 

 Pod glabrous, except the stipe. 

 Leaflets narrowly linear. 



Leaflets few, the terminal one wanting or continuous with the rachis; 



calyx-lobes lanceolate, 1 .5-2 mm. long. 

 Leaflets many, the terminal one present; calyx-lobes triangular, 1 mm. 

 long or less. 

 Leaflets slightly strigose beneath or glabrous throughout. 

 Leaflets strigose-cinereous on both sides. 



Stipe of the pod fully half as long as the body; corolla ochro- 



leueous or white. 

 Stipe about one third as long as the body; corolla purple. 

 Leaflets linear-oblong to oval, glabrous above, strigose beneath. 

 Pod strigose throughout. 



Leaflets linear; raceme elongate, lax. 



Body of the pod 2-2.5 cm. long, abruptly contracted at the base, 



straight. 

 Body of the pod 2.5-3 cm. long, gradually tapering at each end, slightly 

 arcuate. 

 Leaflets elliptic ; raceme short, dense. 



6. Porrecti 

 Leaflets obovate, glabrous above. 

 Leaflets linear, strigose on both sides. 



7. Coixini 

 Pod not with prominent coriaceous sutures. 

 Pod straight or nearly so. 



Body of the pod 2-2.5 cm. long, not mottled, short-villous. 

 Body of the pod 2.5-3 cm. long, usually mottled, strigose. 

 Pod distinctly curved. 



Pod curved in less than a circle. 

 Pod erect; leaflets linear. 

 Pod pendulous. 



Body of the pod 1-1.5 cm. long; leaflets oblong. 

 Body of the pod 2-3 cm. long; leaflets obovate or obcordate. 

 Stem and leaves decidedly pubescent. 



Stem and leaves long -villous ; body of pod curved usually 

 in less than a semicircle. 

 Pod about 4 mm. wide. 

 Pod about 6 mm. wide. 

 Stem and leaves short-hairy with incurved hairs. 



Body of the fruit 6-7 mm. wide, curved about one 



third of a circle, sinuate on the lower suture. 

 Body of the fruit 4—5 mm. wide, curved in about a 

 semicircle or more, not sinuate on the lower suture. 

 Si cm glabrous; leaves glabrous above, sparingly short-hairy 

 beneath, often only on the margin and ribs. 



33. //. humilis. 



34. H. microcarpus. 



35. //. paucijugus. 



36. //. oblongi) 'alius. 



37. H. decurrens. 



38. H. Hilchcockii. 



39. H. serotinus. 



37. //. decurrens. 



40. H. Palliseri. 



41. if. hylophilus. 



42. H. Colloni. 



43. H. slenophyllus. 



44. H. MacCregorii. 



45. H. canovirens. 



46. H. Antiselli. 



47. H.filipes. 



3. H. inversus. 

 9. H. gaviotus. 



50. H. porrectus. 

 53. H. Tweedyi. 



51. H. collinus. 



52. H. calif amicus. 



53. H. Tweedyi. 



54. H. Laurentii. 



55. H. Gibbsii. 



56. H. Plummerae. 



57. H. sinuatus. 



58. H. Whiledii. 



59. H. subglaber. 



