:^)()-j 



Lxxxv. ASCLEPiADE^ (brown). [Stcipelia. 



Corolla 1-1 J in. in diam., pubescent on the outside and on the apical 

 half of the lobes within, "chocolate-coloured" {Capt. Lugard), maroon 

 to ochre (Mo^s. Luyard) ; tube rather small, 1 J lin. long, and about o 

 lin. in diam.; limb rotate, 5-lobed to i the way down ; lobes 5-7 lin. 

 long, ?jh-b lin. broad, ovate, acuminate, transversely rugose, glabrous 

 on the basal half within. Outer coronal-lobes. arising | lin. above the 

 base of the staminal-column, J lin. long, J lin. broad, transversely 

 oblong, very obtuse, entire ; inner coronal-lobes i lin. long, oblong, 

 acute, incumbent on the backs of the anthers. 



Mozamb. Dist. British Central Africa: Ngamiland ; Kwebe, i?(^«rrf, 112 ! 

 Kwobe Hills, 3200 ft., ilfr.v. Lugard, 29 ! 



57. DUVALIA, Haw. ; Benth. et Hook. f. Gen. PI. ii. 784. 



Calyx 5-partite. Corolla rotate-stellate, deeply 5-lobed ; disk raised 

 and forming a ring or spurious tube (often more or less distinctly 

 pentagonal) around the staminal-column ; lobes more or less folded length- 

 wise and often into narrow vertical plates (replicate), usually horizontally 

 spreading, valvate in bud. Corona double, arising from the top of the 

 staminal-column ; outer corona in one piece, disk-like, pentagonal, rest- 

 ing on the rim of the raised disk of the corolla and closing the tube 

 formed by it ; inner corona of 5 fieshy ovoid lobes, incumbent on the 

 backs of the anthers, with a short dorsal projection, which is more or 

 less curved upwards. Staminal-column arising from the bottom of the 

 corolla ; anthers incumbent on the top of the style. Pollen-masses 

 solitary in each anther-cell, horizontal, attached in pairs by short 

 caudicles to lateral expansions of the pollen-carriers. Style not exceed- 

 ing the anthers, flat and pentagonal at the apex. Follicles narrowly 

 fusiform, acuminate, smooth. Seeds crowned with a tuft of hairs. — ■ 

 Dwarf succulent perennials of tufted habit. Stems thick and fleshy, 

 decumbent or erect, 4-6-angled ; angles toothed ; teeth terminating in 

 small acute or subulate leaf-rudiments, which are deciduous or persist 

 and wither, and usuall}'^ have a minute tooth (rudimentary stipule) on 

 each side at their base. Flowers of moderate size, in sessile or subsessile 

 cymes at the middle or base of the young shoots. 



Species several, mostly natives of South Africa, 1 in Arabia. 

 Corolla-lobes ciliate with long clavate hairs at the 



base . . . . . . . . 1. .D. dentata. 



Corolla-lobes not ciliate . . . . . . 2. 1). transvaalensis. 



1. D. dentata, N. E, Br. in Kew Bulletin, 1895, 265. Stems 

 branching at the base, 3-3 J in. high, 6 -angled, glabrous ; angles with 

 subulate pointed teeth 3-4 lin. long ; apical half of each tooth deciduous 

 (being really a rudimentary leaf having a minute lateral tooth on each 

 side), leaving a prominent conical tubercle. Cymes subsessile, from 

 below the middle or near the base of the young shoots, few-flowered ; 

 pedicels §-1 lin. long, glabrous. Sepals \ in. long, lanceolate-attenuate, 

 glabrous. Corolla about 1 J in. in diam., rotate ; disk raised, pentagonal, 



