FLORA OF MADAGASCAR. 271 
cuspidate at the tip. Filaments not more than two thirds as 
long as the perianth-segments ; anthers linear, 2 in. long.—Cen- 
tral Madagascar, Baron 1982! Allied to C. asiaticum, L. 
DIOSCOREA HETEROPODA, Baker in Trimen’s Journ. 1882, p. 270. 
Female flowers in lax solitary shortly peduncled axillary nearly 
spicate racemes, finally 3-4 in. long, with a pilose rhachis distinctly 
winged towards the top, Flowers solitary, erect, with a very 
short pedicel with a small lanceolate-deltoid bract at the base, a 
pilose clavate-trigonous ovary 4 in. long, and 6 small ovate 
perianth-segments. Capsule pendulous, cernuous, shortly pedi- 
cellate, obovate-oblong, glabrous, ? in. long, rounded at both 
ends, under 4 in. broad. Central Madagascar, Baron! 
DIOSCOREA TRICHANTHA, n. sp. 
D. ramulis gracillimis pilosis, foliis petiolatis simplicibus cordato-ovatis 
cuspidatis membranaceis obscure pilosis, racemis masculis 2-3nis laxis 
elongatis, bracteis deltoideo-cuspidatis, floribus parvis pilosis szepe 2-3nis, 
racemis foemineis solitariis, floribus singulis, capsula cernua obovato-oblonga 
glabra. 
An herbaceous twiner, with slender finely pilose stems. Petiole 
an inch or more long; blade 8—4 in. long, conspicuously cordate, 
with 7 ribs radiating from the tip of the petiole, thin in texture, 
green and obscurely pilose on both sides. Male racemes shortly 
peduncled, 2-3 in. long, with densely pilose rhachises, bracts, and 
flowers; lower flowers in twos or threes; pedicels very short; 
expanded perianth not more than a line in diameter, greenish ; 
segments oblong; stamens very short. Female flowers solitary, 
with a pilose clavate-trigonous ovary } in. loug and 6 small 
ovate segments. Capsule brown, shining glabrous, cernuous, 
2 in. long, } in. in diam.—Central Madagascar, Baron 677! 723! 
806! A near ally of D. heteropoda. 
ALOE DELTOIDEODONTA, n. sp. 
Acaulis, foliis parvis oblongo-lanceolatis dentibus parvis contiguis del- 
toideis stramineis marginatis, pedunculo elongato simplici vel furcato, race- 
mis laxis elongatis, bracteis oblongo-lanceolatis quam flos duplo brevioribus, 
pedicellis ascendentibus apice articulatis quam bracteze paulo longioribus, 
perianthii segmentis quam tubus cylindricus brevioribus, genitalibus inclusis. 
Probably acaulescent or nearly so. Leaves 3—4 in. long, not 
more than an inch broad, narrowed gradualiy from the middle or 
below it to an acute point, with a continuous horny border and 
crowded stramineous deltoid prickles p; in. long. Peduncle a 
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