262 LXXXV. ASCLEPIADEZ (BROWN). [ Tacazzea. 
upwards, all filiform, tortuous and intermingled over the top of the 
stamens and style; the entire lobe 11-1}? lin. long, the undivided part 
rather more than 4 lin. long. Stamens about } lin. long; filaments 
very short, about } as long as the glabrous anthers, the lobules alter- 
nating with them very rudimentary and not forming a very evident 
ring.— Pleurostelma africanum, Schlechter in Journ. Bot. 1895, 303, t. 
351, inaccurate; K.Schum. in Engl. & Prantl, Pflanzenfam. Nachtr. 
zum ii—iv. 285. Schlechterella africana, K. Schum. in Engl. & Prantl, 
Pflanzenfam. Nachtr. ii. zum ii.—iv. 60. 
Mozamb. Dist. British East Africa: without precise locality, but, according 
to the number, was probably collected between Maungu Mountain and Mbuyuni, in 
Taita district, growing in red sand, Scott-Elliot, 6175! 
I can find no character to separate this plant from Zacazzea ; the coronal-lobes 
may be compared with those of 7’. venosa, var. Martini, N. EF. Br. except that they 
are trifid instead of bifid. They are inaccurately described and figured in the 
Journal of Botany. 
2. 'T. volubilis, V. #. Br. Stem climbing, stout, woody, more 
or less branching, greyish-brown, with small scattered tubercles, 
glabrous. Leaves and flowers fascicled on very short (2-6 lin. long) 
stout lateral branches. Leaves very shortly petiolate, 3-1 in. long, 
2-3} lin. broad, lanceolate-oblong, obtuse or subacute, cuneately 
narrowed towards the base, subtomentose or velvety-pubescent on both 
sides. Cymes subterminal on the short lateral branchlets, umbel-like, 
3—4-flowered, subsessile or with peduncles, 4-14 lin. long; pedicels 
1-1} lin. long, tomentose. Sepals }-1 lin. long, 3—? lin. broad, ovate, 
subacute, tomentose. Corolla 5-lobed nearly to the base, rotate, 54 lin. 
in. diam., quite glabrous; lobes 24 lin. long, 14 lin. broad, oblong, 
obtuse, with a thick fleshy subquadrate sulcate tubercle at their base. 
Coronal-lobes inserted at the base of the stamens at the sinuses of the 
corolla, and connected in a ring at the base with the tubercles on the 
corolla-lobes, 2 lin. long, simple, filiform, spreading in the basal part, 
then inarched in a bold curve over the stamens, tortuous at the apex. 
Filaments of the stamens } lin. long, glabrous, anthers } lin. long, 
oblong, apiculate, glabrous, connivent or slightly cohering at their tips 
over the very short conical apex of the style. Raphionacme volubilis, 
Schlechter in Journ. Bot. 1895, 302. 
East Tropical Africa. Ruwenzori Expedition, without locality or number, 
Scott-Elliot ! 
This plant in no way resembles a Raphionacme, its structure and habit is entirely 
that of Tacazzea, 
3. T. pedicellata, K. Schum. in Engl. Jahrb. xvii. 115. Stem 
somewhat quadrangular in the younger parts (in the dried state), 
slightly scabrous, dark red-brown. Leaves with sparsely puberulous 
petioles 3-5 lin. long; blade 2-44 in. long, 4-14 in. broad, eee 
lanceolate, acute or shortly acuminate, rounded at the base, qui 
glabrous on both sides; veins numerous, horizontal, straight a2 
parallel, intramarginal vein about 4 line distant from the margi 
