578 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Lower calyx lobes rather large, ovate, subequal; raceme very dense. 
8. W. hirsuta. 
Lower calyx lobes small, triangular, the median narrower and longer; 
raceme not very dense. 
Calyx ferruginous-pubescent.® 
Leaflets lance-oblong, attenuately acuminate; intermediate rib of 
pod 3 to 4 mm. from the ventral one____._________ 9. W. picta. 
Leaflets oblong, abruptly acuminate; intermediate rib of pod 5 mm. 
from the ventral one_______________--______ 10. W. lasiocalyx. 
Calyx not ferruginous-pubescent. 
Leaflets small, elliptic, softly puberulent on both sides; branches 
slender, densely ferruginous-pubescent___________ 11. W. lenta, 
Leaflets large, oblong to ovate, usually canescent-strigillose to 
tomentulose beneath, sometimes glabrous or nearly so; branches 
usually cinereous-pubescent, sometimes ferruginous-pubescent. 
12. W. villosa. 
1. Wenderothia acuminata (Rose) Piper. 
Canavalia acuminata Rose, Contr. U. S. Nat. Herb, 1: 322. 1895. 
Whole plant glabrous except the petiolules and inflorescence; stems terete, 
woody; stipules not seen; petioles slender, about equaling the leaflets; leaflets 
membranaceous, ovate to obovate, rounded at base, conspicuously acuminate, 
the tip obtuse and apiculate, 5 to 10 cm. long; peduncles much shorter than 
the 10 to 30-flowered thyrses, the pedicellar glands very prominent; calyx cam- 
panulate, minutely strigillose, 14 mm. long, the broad emarginate upper lip 
very short, not longer than the 3-lobed lower lip, with nearly orbicular lobes 
about 2 mm. long; standard 3 em. long, the blade broadly oval, slightly 
notched at the reflexed tip, bearing two linear callosities in the middle near 
the base, the claw broad, about 7 mm. long; wings much shorter than the 
keel, linear, auricled at base, slender-clawed; keel 3 cm. long, falcate, the 
narrowed beak partly coiled, each petal auriculate at base, the claw slender; 
style glabrous; stigma clavate; stamens monadelphous, the vexillar one partly 
free; pods linear, 12 to 15 cm. long, 2 em. broad, straight, strigillose with 
white hairs, each valve with 4 prominent ribs, one very close to each suture, 
the other two equidistant from each other and from the sutures; seeds 
lenticular, shiny, 10X12X4 mm., olive-gray, sprinkled with black, the hilum 
3 to 7 mm. long, one-twelfth to one-sixth the circumference of the seed. 
Mexico: Manzanillo, Colima, Palmer 1036, type (U. S., Kew). San Geroni- 
mito, Michoacin or Guerrero, Langlassé 714 (Kew). 
2. Wenderothia bicarinata (Standl.) Piper. 
Canavalia bicarinata Standl. Contr. U. 8. Nat. Herb. 18: 106. 1916. 
Climbing herb; stems very slender, terete, densely puberulent, the hairs 
somewhat reflexed ; stipules minute, subulate, hairy, quickly deciduous; petioles 
about as long as the leaflets; petiolules 8 mm. long, very puberulent; leaflets 
membranaceous, oval to ovate, rounded at base, mostly doubly acuminate, the 
acumination again narrowed to a mucronate point, densely hispidulous above, 
puberulent beneath, 3 to 5 cm. long; peduncles terete, puberulent, 6 to 10 em. 
long, about 6-flowered, the gland at base of each pedicel conspicuous; bracte- 
oles broadly ovate; calyx nearly 2 cm. long, sparsely strigillose, the large 
"In W. villosa the calyx is rather rarely ferruginous-pubescent. The usually 
ovate leaflets and the wider space, 6 to 10 mm., between the ventral and inter- 
mediate ribs will serve to separate the species from W. lasiocalyx. 
