Dioscorea. | DIOSCOREACEE (Baker). 249 
ee Reeton: Transvaal ; Zoutpansberg Div.; Hout Bosch, Rehmann, 
83! 
5. D. multiloba (Kunth, Enum. v. 376); stems very twining, 
glabrous ; leaves alternate ; petiole 3-1 in. long; blade simple, firm 
in texture, green and glabrous on both surfaces, cordate-deltoid when 
fully developed, 3-4 in. long and broad, with 5-7 deltoid lobes, 
reaching about halfway down to the petiole, the central one promi- 
nently triplinerved from base to apex, conspicuously mucronate, 
sometimes shallowly 3- or 5-lobed with a large rounded central lobe, 
or even cordate-ovate or cordate-orbicular and quite undivided; male 
flowers in lax spikes 1-2 in. long with a very flexuose, strongly- 
angled, glabrous rachis, each subtended by a small deltoid cuspidate 
bract ; perianth campanulate, glabrous, } in. diam. when expanded ; 
tube short; segments ovate, acute; fertile stamens 6; anthers 
elliptical ; rudimentary style very short, triquetrous ; female flowers 
deflexed, arranged in lax spikes with a flexuose rachis; perianth 
campanulate, + in. diam.; ovary linear-oblong, glabrous, } in. long; 
capsule obovate-oblong, #-1 in. long; seeds with an orbicuiar nucleus, 
with a broad membranous wing all round. 
‘Eastern Reoion: Natal; Inanda, Wood, 329! 825! and without precise 
locality, Queinzius! Gerrard, 772! Also Drége, 4496! collected probably in 
Pondoland. 
6. D. diversifolia (Griseb. in Endl. and Mart. Fl. Bras. iii. 41) ; 
stems glabrous, twining, very slender; leaves alternate ; petiole 
1-2 in, long; blade membranous, glabrous, cordate-ovate, reaching 
a length and breadth of 3-5 in., shallowly or deeply 3—5-lobed at the 
base when fully developed, but often quite entire, acute or obtuse, 
conspicuously mucronate, the large central segment triplinerved from 
base to apex ; male flowers in 2—3-nate very lax spikes 1-3 in, long 
with a slender, straight, glabrous rachis, each subtended by a minute 
ovate bract; perianth campanulate, 4 in. diam. when expanded ; 
tube short ; segments ovate, acute; fertile stamens 6, much shorter 
than the perianth ; rudimentary style very minute; female flowers in 
Jax simple racemes; pedicels short, patent ; capsule obovate, nearly 
truncate at the apex, $—J in. broad ; seeds with an orbicular nucleus, 
with a broad membranous wing all round. Kunth, Enum. v. 375. 
East : land; between Umtentu River and Umzimkulu 
River, under 600 fhe Drage, 4197! Natal; Groenberg, Wood, 892 ! and without 
precise iucality, Gerrard, 1920! 
Described by Grisebach by mistake as a Brazilian plant. 
7. D. rupicola (Kunth, Enum. v. 378) ; stems very slender, very 
twining, glaprous; leaves alternate; petiole {-1 in. long; blade 
simple, cordate-hastate, 2-3 in, long and broad, membranous, bright 
green, shallowly 5-lobed with a large deltoid, mucronate, central 
segment triplinerved from base to apex, and two small orbicular 
lobes on each side of the spreading base ; male flowers in lax sub- 
Spicate racemes 2-3 in. long with a flexuose glabrous axis; pedicels 
very short, subtended at the base by a pair of minute bracts ; perianth 
