248 DIOSCOREACEX (Baker). [ Dioscorea- 
with a slender straight glabrous axis; pedicels very short, subtended 
by a minute ovate-lanceolate bract; perianth campanulate, ; in. 
Jong ; tube very short; segments oblong, obtuse; stamens 6 ; fila- 
ments incurved, longer-than the globose anthers ; rudimentary pistil 
globose ; female flowers and fruit unknown. 
Coast Reaion : George Div. ; in a forest near Touw River, Burchell, 5728! 
Stockenstrom Div. ; Katberg, Hutton! British Kaffraria, Mfrs. Barber, 34 ! 
2. D. (Helmia) malifolia (Baker in Journ. Bot. 1889, 1); stems 
slender, twining, glabrous; leaves alternate ; petiole 4-1 in, long ; 
blade simple, entire, broad ovate, truncate or slightly cordate at the 
base, 1-2 in. long and broad, moderately firm in texture, green and 
glabrous on both surfaces, 5-nerved from base to apex, minutely 
mucronate ; male flowers in copious lax fascicled racemes 2-3 in. 
long with a flexuose or straight glabrous rachis; pedicels short, 
ascending; bracts minute ovate, acuminate; perianth glabrous, 
vs—as in. long; tube short ; segments oblong, obtuse ; fertile stamens 
6, much shorter than the perianth-segments; female flowers in lax 
racemes 4-6 in. long; ovary cylindrical-triquetrous, glabrous, 4 in. 
long; capsule obovate-triquetrous, emarginate, an inch long; seeds~ 
with a large basal wing. 
Coast Region: Komgha, Flanagan, 97 ! 
Katanari ReGion: Transvaal; near Barberton, Galpin, 764! 1189! 
Eastgen Recion: Tembuland; Morley, 1000-2000 ft., Drége, 4500! Natal; 
Inunda, Wood, 753! Northdene, near Durban, 500 ft., MacOwan and Bolus, 
Herb. Norm., 1035! Port Nuatul, Sanderson, 232! and without precise locality, 
Cooper, 3247! Gerrard, 444! 
3. D. (Helmia) Mundii (Baker in Journ. Bot. 1889, 1); stems very 
slender, twining, glabrous ; leaves alternate; petiole 4-1 in. long ; 
blade simple, entire, ovate, deeply cordate at the base, 2—3 in. long, 
mucronate, membranous, glabrous, triplinerved ; male flowers in lax 
fascicled simple racemes 3-4 in. long with a straight glabrous axis; 
pedicels short, subtended by a pair of minute ovate acuminate bracts; 
perianth infundibuliform, glabrous, J; in. long ; segments oblanceo- 
late, obtuse ; fertile stamens 6, nearly as long as the perianth- 
segments’; female flowers also in lax simple racemes ; capsule oblong- 
triquetrous, glabrous, 1} in. long, § in. broad ; seed winged at the 
base only. TZestudinarta nemorum, Mund Exsic. 
SoutH AFRica : without locality, Mund ! 
Coast Recion: Knysna Div.; Koratra, below 1000 ft., Drége, 8559a! 
4. D. Rehmanni (Baker); stems slender, twining, glabrous; 
leaves cordate-ovate, obtuse, moderately firm, green and glabrous on 
both surfaces, those of the main stem about 2 in. long and broad; 
basal lobes rounded, touching or slightly imbricate; petiole short ; 
male flowers in lax axillary simple racemes 2-3 in. long; pedicels 
spreading or erecto-patent, 4 in. long; bracts lanceolate, minute, 
persistent ; perianth of male flowers 4 in. long; tube fannel-shaped ; 
segments oblong-lanceolate, as long as the tube; stamens shorter than 
the perianth-segments ; female flowers and fruit unknown. 
