Tacazzea.] lxxxv. asclepiade^ (brown). 201 



Pedicels li in. or more long; veins of the leaves 



numerous horizontal 3. T. pedicellafa. 



Pedicels not more tlian | in. long ; veins of the 

 leaves not horizontal. 

 Leaves glabrous beneath. 



Leaves acuminate at the apex, rounded or 



subcnneate at the base . . . .9. T. conferta. 



Leaves rather abruptly apiculate at the apex, 

 cordiite or eniarginate at the base. 

 Panicles 1^-2^ in. long . . . . 10. 7". Barteri. 



Panicles 4-8 in. long . . . . 1\. T. Tholloni. 



Leaves puberulous, pubescent or tomentose 

 beneath. 

 Leaves -i or more times as long as broad, not 



cordate at the base . . . , 5. T. venosa. 



Leaves 1^-3 times as long as broad. 

 Calyx quite glabrous. 



Stem glat>rous ; leaves rounded at the 



liase 8. T. nigritana. 



Stem pubescent; leaves emarginate or 



collate at the base . . .13. T. apiculata. 



Calyx more or less puberulous hairy or 

 tomentose. 

 Stipulary line between the bases of tlie 

 petioles very thick and prominent, 

 with stout retiexed ami erect teeth . 12. T.Jloribunda. 

 Stipulary line slender or indistinct or 

 wanting, neither prominent nor 

 toothed 

 Panicles very lax, with very slender 



branches; leaves whoiled . . T . T. verticillnta. 



Panicles pyramidal, witli the flowers 

 more or less collected at the ends 

 of the branches. 

 Stem erect ; leaves opposite or 

 wliorled; petioles \~h in. long 

 Stem Climbing ; leaves opposite 

 petioles \-lh in. long 



1. T^africana, X. E. Br. Stem twining, pale greyish-brown, 

 glabrous. Leaves distant, spreading, l|-4 in. long, J-V lin. broad, 

 Mibsessile, linear, acute, margins strongly involute, glabrous on botli 

 sides. Cymes axillary, or terminating sjiort axillary shoots that bear 

 :2-4: leaves, arising from both axils, loo.sely trichotomous, 1-1) in. long; 

 peduncle and branches of the cyme slender, glabrous ; bracts minute, 

 J-J lin. long, glabrous; pedicels U-2 lin. long, slqnder, glabrous. 

 Sepals J- J lin. long, deltoid-ovate, acute, glabrous. Corolla 5-lobed 

 almost to the base, rotate, about 4 ^ lin. in diam., white ; lobes 2 lin. 

 long, § lin. broad, linear-oblong, very obtuse, with revolute margins, 

 glabrous on both sides. Coronal-lobes filiform, trifid, erect in the lower 

 half, then abruptly bent inwards and divided into ;5 at the bend, 

 lateral divisions shortest, erect, middle one bent down and then 



