1036 ASCLEPIADEZ (Brown). [Duvalia. 
19. D. tuberculata (Haw. Syn. Pl. Succ. 46, and Suppl. 13) ; 
stems 1-2 in. long, oblong, 4-angled, with large recurving teeth ; 
corolla-lobes replicate into vertical plates, blackish-rufescent, ciliate- 
pubescent ; annulus somewhat hairy; outer corona pale reddish ; 
inner corona-lobes rosy-white. G. Don, Gen. Syst. iv. 121. Stapelia 
tuberculata, Schultes, Syst, Veg. vi. 46; Decne in DC. Prodr. 
viii. 663. 
Soura Arrica: without locality, introduced into cultivation in 1774, ex 
Haworth. 
Stated to be somewhat smaller than D, radiata, Haw. Possibly not distinct 
from D, hirtella, Sweet. 
OrperR LXXXIX. LOGANIACE/E. | 
(By D. Praty and H. A. Cummins.) 
Flowers hermaphrodite, regular or slightly oblique. Calys inferior, 
4-lobed ; tube usually short. Corolla funnel-shaped or salver-shaped, 
rarely campanulate or rotate ; lobes usually 4, occasionally 5, rarely 
(Anthocleista) 8-16, imbricate, contorted or valvate. Stamens as many 
as and alternate with the corolla-lobes ; filaments filiform or rarely 
dilated, free or rarely (Anthocleista) connate below, often short ; 
anthers usually dorsifixed, cells 2, parallel, dehiscing introrsely, 
rarely (Nusia) divaricate and confluent at apex. Disk 0 or rarely 
(Anthocleista) fleshy. Ovary superior, 2-celled ; style simple ; stigma 
terminal, conspicuous or small, entire or obscurely 2-lobed ; ovules 
x, anatropous or amphitropous. Fruit a capsule septicidally 
2-valved, valves again often partially loculicidally dehiscent; or 
indehiscent, baccate. Seeds obovoid, oblong or globose, sometimes 
by pressure angular or flattened ; albumen fleshy or cartilaginous, 
usually abundant; embryo straight, generally shorter than the 
albumen ; cotyledons semiterete or rarely (Strychnos) foliaceous. 
Shrubs or trees ; leaves opposite, less often whorled, rarely fasciculate, usually 
entire or subentire ; occasionally distinctly toothed or lobed; stipules usually 
reduced to an interpetiolar line, occasionally distinct ; flowers cymose or rarely 
(Gomphostigma) racemose. 
Disrris. Genera about 30, only 6 in South Africa; species about 400, mainly 
tropical, Endemic genera 1, endemic species 15. 
* Fruit a septicidally pikes a oe ; corolla-lobes 4, imbricate ; filaments free ; 
anthers dorsifined ; disk 0 ; cotyledons semiterete. ee 
veg Celye, deeply lobed. Corolla-tube entire. Filaments long; anthers 
