PIPER—CANAVALIA AND WENDEROTHIA 561 
2. Canavalia bonariensis Lindl. Bot. Reg. 6: pl. 1199. 1828. 
Canavalia paranensis Hook. & Arn. Bot. Misce Hook. 3: 200. 1833. 
Canavalia monodon B. Mey. Comm. Pl. Afr. Austr. 149, 1835. 
Canavalia cryptodon Meisn. Lond. Journ. Bot. 2: 96. 1848. 
Stems woody, climbing, terete, sparsely retrorse-puberulent when young, 
glabrate in age; petioles slender, glabrous, about as long as the leaflets; 
stipules narrowly ovate, attenuate-acuminate, 2 mm. long, each with a thickened 
gland at base; stipels very minute, aculeolate; petiolules 8 mm. long, densely 
strigillose; leaflets coriaceous, narrowly oval to broadly lanceolate, short- 
acuminate, the tip obtuse and apiculate, rounded to obtusely angled at base, 
finely reticulate, sparsely strigillose on both sides when young, becoming gla- 
brous, 4 to 7 cm. long; peduncles about as long as the 10 to 15-flowered 
thyrse; pedicellar glands prominent; bracteoles orbicular, minute; calyx coria- 
ceous, campanulate, pale-margined, sparsely strigillose, 10 to 12 mm. long, 
the broad upper lip bilobed, shorter than the tube, the entire lower lip 2 mm. 
long, triangular, acute; corolla purple, 2.5 cm. long; standard reflexed, obo- 
vate, deeply emarginate, attenuate at base to a claw 6 mm. long, not auriculate, 
with a median groove on each side of which is a linear callosity - wings 
equaling the keel, falcate, obtuse, auriculate at base, the slender claw 7 mm. 
long; keel falcate, obtuse, the petals united from above the middle to the 
tip, 2.5 mm. long, the auricles long, curved, acute, the slender claw 7 mm. 
long; stamens monadelphous, the vexillar one partly free; style glabrous ; 
stigma capitate; ovary pubescent, 7 -ovuled; pods pale, oblong, straight, long- 
stipitate, beaked, the only one examined 7 cm. long, 2.5 em. wide, 2-seeded, a 
single longitudinal rib 2 to 3 mm. from the ventral suture, the inner layer 
adherent; seed dark brown, 15X17X10 mm., the linear hilum about half the 
circumference of the seed. 
Southern Brazil, Uruguay, and east-central Argentina ; introduced in South 
Africa. 
Urucuay: Santa Lucia, Gibert 1084 (Kew). 
Brazit: Rio de Janeiro, Glaziow 6179 (Kew). Without locality, Sello 1426 
(Kew). 
Arnica: Port Natal, Grant; Krauss 296, type of C. cryptodon (Kew, N. Y., 
Mo.). Omtendo River, Drége (Kew, Mo.), type of C. monodon. Natal, Ger- 
rard 644 (Kew). 
Canavalia bonariensig was described originally from greenhouse plants 
raised from seeds from Buenos Aires. The type of C. paranensis was col- 
lected on the Rio Parana, Argentina (?), by Tweedie. It is reported by 
Bentham from the Piranga River, Minas Geraes, Brazil. Hicken (Chloris 
Platensis Argentina 136. 1910.) records the plant from Maciel and Isla Santi- 
ago, Argentina, and from Entre Rios, Uruguay. Lindman (Bih. Svensk. 
Vet. Akad. Handl. 27: Afd. III, No. 14:58. 1902) found it at Rio Grande do 
Sul, Brazil. 
Canavalia monodon was based on plants from the Omtendo (? Umtentu) 
River, Natal, Drége, and C. cryptodon is based on Krauss 296 from Port 
Natal. With scarcely a doubt, C. bonariensis is an introduced plant in 
South Africa. 
Arechavaleta (Anal. Mus. Nac. Montevideo 3: 384. 1901) describes the pods 
as 10 to 15 cm. long and containing 5 or more seeds. 
3. Canavalia rusiosperma Urban, Symb. Antill. 1: 473. 1900. 
Stems woody, climbing, terete, sparsely appressed-puberulent with reflexea 
hairs, at length glabrous, becoming as much as 10 cm. thick (Cook & Collins) ; 
stipules triangular, 1.5 mm. long, caducous; petiole usually much shorter than 
