Tacazzea. | LXXXV. ASCLEPIADEZ (BROWN). 261- 
Pedicels 14 in. or more long; veins of the leaves 
numerous horizontal < : : “ 
Pedicels not more than 4% in. long ; veins of the 
leaves not horizontal. 
Leaves glabrous beneath. 
Leaves acuminate at the apex, rounded or 
subcuneate at the base. : : ° 
Leaves rather abruptly apiculate at the apex, 
cordate or emarginate at the base. 
Panicles 14-2} in. long . ; : . 10. 7. Barteri. 
Panicles 4-8 in. long : é : . LL. 7. Tholloni. 
Leaves puberulous, pubescent or tomentose 
8. 7. pedicellata. 
9. 7. conferta. 
beneath. 
Leaves 4 or more times as long as broad, not 
cordate at the base : c . 5. T. venosa. 
Leaves 11-3 times as long as broad. 
Calyx quite glabrous. 
Stem glabrous; leaves rounded at the 
base <- c c c . 8. TZ. nigritana. 
Stem pubescent; leaves emarginate or : 
cordate at the base c : . 13. 7. apiculata. 
Calyx more or less puberulous hairy or 
tomentose. 
Stipulary line between the bases of the 
petioles very thick and prominent, 
with stout reflexed and erect teeth , 12. 7. floribunda, 
Stipulary line slender or indistinct or 
wanting, neither prominent nor 
toothed 
Panicles very lax, with very slender ss 
branches; leaves whorled . . 7. T. verticillata. 
Panicles pyramidal, with the flowers 
more or less collected at the ends 
of the branches. 
Stem erect; leaves opposite or : . 
whorled ; petioles 3-4 in. long. 6. T. Weiwitschii. 
Stem climbing; leaves opposite ; ee 
petioles ae in. long . . 14. 7. Kirkii & ¥ 
ae 13, 7’. apiculata, var. J 
1. T. africana, V. /. Br. Stem twining, pale greyish-brown, 
glabrous. Leaves distant, spreading, 14-4 in. long, 4-3 lin. broad, 
subsessile, linear, acute, margins strongly involute, glabrous on both 
Sides, Cymes axillary, or terminating short axillary shoots that gine 
2-4 leaves, arising from both axils, loosely trichotomous, 1-1} in. long ; 
peduncle and branches of the cyme slender, glabrous ; bracts minute, 
3-4 lin. long, glabrous; pedicels 14-2 lin. long, slender, reer 
Sepals 3-4 lin. long, deltoid-ovate, acute, glabrous. | Corolla 5-lobe 
almost to the base, rotate, about 44 lin. in diam., white; lobes 2 lin. 
ong, 2 lin. broad, linear-oblong, very obtuse, with revolute margins, 
glabrous on both sides. Coronal-lobes filiform, trifid, erect 10 the ca 
half, then abruptly bent inwards and divided into 3 at cee one , 
lateral divisions shortest, erect, middle one bent down and then 
