Duvalia. | ASCLEPIADEZ (Brown). 1025 
each end, subhorizontal with the dorsal point usually somewhat 
raised and the inner closely incumbent on the backs of the anthers 
and sometimes longer than them, but not produced into erect points. 
Stamens arising at the base of the corolla, united into a tube around 
the ovary and adnate to the dilated part of the style; anthers 
without a terminal appendage, inflexed on the table-like top of the 
style. Pollen-masses solitary in each anther-cell, horizontal or 
ascending, pellucid on one margin, attached by very short broad 
caudicles to lateral wing-like expansions of the pollen-carrier. 
Follicles erect, smooth. Seeds with a tuft of hairs at one end. 
Succulent leafless herbs of very dwarf habit; stems decumbent or erect, in 
many of the species occasionally subterranean, with the tips rising to the surface, 
4-6-angled, with spreading teeth, each tooth tipped with a minute deltoid-ovate 
or subulate acute rudimentary leaf, having a minute denticle (stipule) on each side 
at its base ; flowers in small clusters or‘eymes near the base or middle of the young 
stems, sometimes solitary. 
DistriB. Species about 16, mostly South African, 1 in Tropical Africa and 1 in 
Arabia, 
Corolla-lobes (at least at the base) and annulus pubescent 
on the inner face : 
Corolla-lobes 23-5 lin. long, with a soft villous 
pubescence 1-1} lin. long ... ; as (4) elegans 
and vars. 
Corolla-lobes 3-54 lin. long, with a pubescence 4-4 lin. 
long ... ste gt yh ie na ... (6) pubescens 
and var. 
Corolla-lobes glabrous on the inner face : ‘ 
Corolla-lobes ciliate with long clavate vibratile hairs, 
which easily become detached and are often 
absent from dried specimens : 
Annulus covered with soft spreading purple hairs 
1-24 lin. long ; corolla 1}-2 in. in diam. «+ (3) Corderoyi. 
Annulus varying from almost glabrous to distinctly 
puberulous on the rim with hairs }-} lin. long ; 
corolla $-1} in. in diam. : 
Stems 6-angled ; corolla-lobes expanded and about 
4-5 lin. broad at the base, very smooth and 
shining ... a ion ies eee ag 
Stems 4-5-angled ; corolla-lobes replicate from 
base to apex into vertical plates ..» eve (8) reclinata. 
Corolla-lobes ciliate with clavate fixed or but slightly 
vibratile and non-clavate hairs mixed _..... .-» (9) hirtella vars. 
Corolla-lobes ciliate (at least at the base) with non-clavate 
fixed hairs only, which are sometimes minute and 
scarcely visible except under a lens : 
Corolla-lobes expanded and 4-5 lin. broad at the 
base ; outer corona light yellow... aie --» (2) Pillansii. 
Corolla-lobes openly replicate and 14-2} lin. across 
at the base, replicate into vertical plates at the 
apex ; outer corona reddish-brown a ... (5) modesta. 
Corolla-lobes closely replicate to the base in 
(1) polita. 
| ae 
