574 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
24. Canavalia dictyota Piper, sp. nov. 
Vine, herbaceous or perhaps shrubby at base; stems terete, strigillose with 
reflexed hairs when young, at length glabrous; stipules (not seen) quickly 
deciduous; petiole much shorter than the leaflets; petiolules densely puberu- 
lent; leaflets firm, almost chartaceous, lance-ovate, acute at apex, cuneate at 
base, sparsely strigillose on both surfaces especially beneath, prominently 
herved, beautifully reticulate-veined, 6 to 8 em. long, 3 cm. wide; peduncles 
stout, 10 cm. long; thyrses about 8-flowered; calyx campanulate, sparsely 
strigillose, 13 mm. long; upper lip broad, emarginate; lower lip with 3 small 
deltoid-ovate ciliate teeth, the lateral ones larger, 2.5 mm. long; corolla 2.5 em. 
long; standard oval, emarginate at apex and with two thick callosities near 
the biauriculate clawed base; wings obtuse at apex, each with a short lobe 
below the middle; keel blunt, as long as the wings; style glabrous; stigma 
capitate; ovary strigillose; pods linear, compressed, very firm and woody, 
tipped with a straight beak, strigillose when young, straw-colored to brown, 
16 cm. long, 3 cm. wide, one ridge very close to each suture, the second 5 mm. 
distant from the ventral suture; sceds ell’psoid, compressed, 20 mm. long, 12 
mm. wide, 7 mm. thick, reddish brown, marbled with longitudinal black bands, 
dull; hilum linear, 17 mm. long, encircled by a narrow dark brown band. 
Type in the U. S. National Herbarium, no, 1,111,602, collected at mouth of 
Demerara River, British Guiana, April, 1887, by G. S. Jenman (no, 4211). A 
specimen of the same collection is in the herbarium of the New York Botan- 
ical Garden. 
BRITISH GUIANA: Demerara, Parker (Kew). Vreed-en-Hoop, Demerara 
River opposite Georgetown, Hitchcock 16698 (U. 8S. N. Y.), “flower pinkish 
lavender,” 
FRENCH GUIANA: Cayenne, Broadway 452, 141 (N. Y.), “ flowers rose-color, 
fragrant.” 
VENEZUELA: Los Chorros, near Caracas, Bailey 486, “ cultivated” (U. S.). 
Brazit: Seeds obtained from Para, Brazil, 8. P. I. no. 48600, are identical 
with Jenman’s 4211, but none would germinate. 
25. Canavalia brasiliensis Mart.; Benth. Ann. Wien. Mus. Naturg. 2: 135. 
1838. 
Herbaceous vine; stems slender, terete, strigillose; petioles sparsely strigil- 
lose, as long as the leaflets; petioles densely puberulent, 5 mm. long; stipules 
minute, triangular, acuminate, puberulent, quickly deciduous; stipels awl- 
shaped, minute, persisting; leaflets ovate to oval, membranaceous, very short- 
acuminate and minutely apiculate, rounded to obtuse at base, sparsely strigil- 
lose on both surfaces but more so beneath, 10 to 16 cm. long; peduncles stout, 
longer than the leaflets; thyrses 10 to 15-flowered ; bracteoles ovate- orbicular ; 
calyx campanulate, 13 to 15 mm. long, sparsely strigillose, the large upper lip 
emarginate, the lower lip with three small trianguar acute teeth, the median 
longer, narrower, and thicker; corolla purplish, 2.5 cm. long; standard obovate, 
notched at apex, 2.5 cm. long, bearing 2 lunate callosities at base of blade, the 
broad claw 5 cm. long, the auricles ovate, inflexed ; wings oblong, obtuse, ungui- 
culate, as long as the keel, the oblong basal auricles inflexed; keel falcate, 
blunt, the petals united above the middle, each with a short claw and an ovate 
inflexed basal auricle; style glabrous; pods fuscous (Ridgway), linear, com- 
pressed, nearly straight, sparsely strigillose, 10 to 15 em. long, 2 to 5 em. 
broad, one ridge very near the ventral suture, the second 3 to 5 mm. distant; 
inner layer papery and separating; seeds ellipsoid, compressed, 10 to 13 mm. 
long, 7 to 8 mm. broad, 4 to 5 mm. thick, dull, Isabella color (Ridgway) : 
hilum black, linear, surrounded by a dark brown narrow band, two-thirds as 
long as the seed, about one-fourth its circumference. 
