PIPER—CANAVALIA AND WENDEROTHIA 567 
Type in the U. S. National Herbarium, nos. 209168 and 209169, collected 
at Manzanillo, Colima, Mexico, December 1-31, 1890, by Edward Palmer (no. 
1024). 
Mexico: Altata, Sinaloa, Rose 1343 (U. S.). Clarion Island, Anthony 405, 
(Kew, Mo., U. S., Calif.; in fruit); ¢. H. Townsend, March, 1889 (U. 8.). 
Very closely allied to C. maritima, but the leaflets, and especially the seeds, 
differ. 
11. Canavalia ensiformis (L.) DC. Prodr. 2: 404. 1825. 
Dolichos ensiformis L. Sp. Pl. 725. 1753, The original basis of Linnaeus’ 
species is the “Horse Beau” of Jamaica, described by Sloane (Cat. PI. 
Jam. 1: 68. 1696). 
Dolichos acinaciformis Jacq. Coll. Bot. 1: 114. 1786. Based on a twining 
plant grown in the greenhouse from West Indian seed and supposed to be 
different from D. ensiformis, described by Linnaeus as “ erect.” 
Dolichos pugioniformis Gmel. Syst. Nat. ed. 13. 2: 1108. 1796, in part. Based 
on older descriptions, mainly of C. ensiformis but partly of C. gladiata. 
Annual, usually bushy and erect, 1 to 2 m. high, the tips of the branches 
inclined to twine and in the shade becoming pronouncedly twining ; stems stout, 
terete, sparsely strigillose with reflexed hairs; petioles usually longer than the 
leaflets; stipules lanceolate, thickened at base, minute, quickly deciduous ; 
petiolules densely puberulent ; stipels minute, subulate; leaflets membrana- 
ceous, oval to ovate, obtuse to acute, apiculate, 6 to 12 cm. long, strigillose at 
first on both faces but at length glabrous or nearly so; peduncles stout, 10 to 
20-flowered ; pedicellar glands prominent ; bracteoles orbicular; calyx campanu- 
late, 16 mm. long, the upper lip broad, emarginate, shorter than the tube, the 
lower lip 3-lobed, 4 mm. long, the lobes triangular, acute, the median thicker, 
narrower, somewhat concave; corolla 15 mm. long, rose-colored, gradually fad- 
ing to white toward the base; standard oblong-orbicular, notched at apex, re- 
flexed in anthesis, bearing two conical thickenings near the base of the blade, 
and at the base two inflexed semicircular auricles, the claw broad, 5 mm. long; 
wings oblong, obtuse, curved, unguiculate, the basal auricle thickish and in- 
flexed; keel as long as the wings, falcate, the petals united except at base, 
unguiculate, an inflexed auricle on each side at the base of the blade; stamens 
monadelphous, the vexillar one free near the base, all free for the terminal 
one-sixth; style glabrous; stigma capitate, scarcely thickened; pods linear, 
slightly curved, stipitate, beaked at tip, scarcely compressed, 25 to 30 cm. long, 
2 to 2.5 em. wide, 12 to 20-seeded, each valve with three longitudinal ridges, 
one near each suture, the third 4 mm. from the ventral suture; inner layer 
thin, white, papery, separating; seeds ellipsoid, compressed, shiny white, 
22148 mm., the hilum grayish, 8 mm. long, about one-seventh the circum- 
ference, surrounded by an orange-brown narrow border. 
Cultivated in the southern United States under the names Jack bean, Won- 
der bean, Giant Stock bean, Wataka bean, Pearson bean, etc. The plant is 
known to occur through the West Indies and in Panama, Guiana, Brazil, and 
Peru, but probably in all cases as a cultivated plant. While now widespread 
in the Tropics of both hemispheres, it is practically certain that the plant is 
native to America. 
12. Canavalia campylocarpa Piper, Proc. Biol. Soc. Washington 30: 175. 1917. 
Herbaceous annual, or under tropical conditions perhaps longer enduring ; 
stems twining, green, branching, minutely and sparsely appressed-puberulent 
with white hairs, growing to a height of 2 to 4 meters; petioles about as long 
as the leaflets, sparsely puberulent; petiolules dark green, densely white- 
puberulent, somewhat swollen ; leaflets -membranaceous, ovate to oblong- 
