PIPER—CANAVALIA AND WENDEROTHIA © 569 
keel blunt; pods densely strigillose when young, glabrous when mature, linear, 
compressed, dark brown, smooth, 12 em. long, 3 cm. broad, 3-ribbed, one rib 
close to each suture, the third more prominent and 5 mm. from the ventral 
rib; inner layer separating when mature; seeds oval in outline, somewhat 
narrowed at the micropylar end, much compressed, 18X12X5 mm.; hilum 
oblong-linear, nearer to the micropylar end, 10 mm. long, or about one-fifth the 
circumference. 
Type in the Kew Herbarium, collected at Coyaquilla, Michoacin or Guerrero, 
Mexico, in sandy places, June, 1898, by E. Langlassé (no. 734). 
Readily distinguished from any form of C. maritima by the pods and seeds. 
15. Canavalia mexicana Piper, sp. nov. 
Stems herbaceous, climbing, terete, sparsely strigillose with reflexed hairs; 
stipules minute, ovate, obtuse, purplish, quickly deciduous ; petioles shorter 
than the leaflets, strigillose; stipels minute, linear; leaflets chartaceous, oval, 
acute or acutish or rarely acuminate, strigillose on both faces when young, 
glabrous in age, 5 to 7 cm. long; peduncles about 10 cm. long, equaling thd 
15 to 20-flowered thyrses; bracteoles broadly ovate to orbicular; calyx 
campanulate, sparsely strigillose, sulcate with many longitudinal grooves 
when dry, 10 mm. long; upper lip deeply emarginate, shorter than the tube; 
lower lip 3-lobed, the lobes triangular, acute, the middle one longer and nar- 
rower, 2 mm. long; corolla 2 to 2.5 em. long; standard ovate, emarginate, 
reflexed, the auricles rounded and inflexed, the claw rather broad, the cal- 
losities thick; wings as long as the keel, oblanceolate, obtuse, auricled, un- 
guiculate; keel falcate, truncate, the auricles narrow, the claw slender; style 
glabrous; stigma capitate; pod linear, 10 to 15 cm. long, strigillose when 
young, thick and firm, each valve with three ribs, one very near each suture, 
the third 3 mm. distant from the ventral rib; seeds ellipsoid, compressed, 
tawny, streaked with brown, 15 mm. long, 10 mm. wide, 5 mm. thick; hilum 
oblong, black, broadest at the micropylar end, encircled by a dark brown 
band, less than half as long as the seed, about one-sixth its circumference. 
Type in the U. 8. National Herbarium, nos. 567787 and 305542, collected at 
Imala, Sinaloa, Mexico, September 25 to October 8, 1891, by Edward Palmer 
(no. 1753). 
Mexico: Marfa Madre Island, Nelson 4190 (U. S.). Guadalupe, Sinaloa, 
Rose, Standley & Russell 14787 (U. 8.). Villa Union, Sinaloa, Lamb 385 
(U. 8.) ; Rose, Standley & Russell 13979 (U. S.). Culiacan, Sinaloa, November 
10, 1904, Brandegee (U. S.). Acoponeta, Tepic, Rose 3363 (U. 8.) Acapulco, 
Palmer 145 (Kew). Valley of Cérdoba, Bourgeau 1758 (Kew, Gray). (The 
Bourgeau specimen is doubtfully referred to C. mexicana, as it has long- 
acuminate leaflets.) 
SaLvapoR: Gulf of Fonseca, Sinclair (Kew). 
NICARAGUA: Without locality, Wright (Mo.). 
GUATEMALA: Gualin, Deam 310 (Field). Between Cahabon and Secanquim, 
Alta Verapaz, Goll 125 (U. S.). Mazatenango, Kellerman 5688 in part (U. 8.). 
Yucatan: Mérida, Schott 729 (Field). 
16. Canavalia panamensis Piper, sp. nov. 
Stems herbaceous, terete, sparsely strigillose in indistinct lines, the hairs 
reflexed; petioles shorter than the leaflets, sparsely strigillose; petiolules 
puberulent, 5 mm. long; stipules subulate, appendaged at base, quickly fuga- 
cious, 2.5 mm. long; stipels aculeolate, minute ; leaflets membranaceous, elliptic 
to ovate, rounded to deltoid at base, acuminate and obscurely apiculate at 
apex, finely reticulate-veined, sparsely strigillose, especially beneath, 6 to 10 
em, tong; peduncles stout, 15 to 25 em. long in fruit, 5 to 20-flowered ; flowers 
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