﻿CONTRIBUTIONS TO SOUTH AFRICAN ASCLEPIADOL0GY. 



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angustiore magis compressa, caudiculis brevibus filiformibus di- 

 varicatis, glandula oblonga obtusa basi affixis. 

 Kaffraria, Mrs. Barber. 



For som e time I doubt whether to regard this species as 



E. Mey., there is but little to separate them. I think it best, 

 however, to keep them distinct, as the differently shaped corona- 

 scales and the smaller flowers, accompanied by the habit, seem to 

 justify their separation. 



18. Pentarrhinum coriaceum, n.sp. Volubilis, alte scan- 

 dens, ramis subteretibus lignescentibus, apicem versus tenuiter velu- 

 tiuis. satis dense foliatis ; foliis coriaceis ovato-cordatis acutis 

 acuminatisve, glabrescentibus, marginibus subrevolutis, more 

 Ash, h.oii maryinato Dene., 3-7 cm. longis, infra medium 2-5 cm. 

 latis, petiolo brevi velutino ; floribus quam in P. inMpidoE. Mey. 

 minoribus, in cymis subextra-axillaribus plurifloris, folia baud 

 excedentibus, pedunculo pedicellisque inffiquilongis sparsim pilosis ; 

 calycis segmentis lanceolatis acutis puberulis ; corolla duplo brevi- 

 oribus, vix 0*2 cm. longis ; corollse lobis patentibus ovatis obtusis, 

 0-4 cm. longis, medio 0-2 cm. latis ; coronae foliolis circuitu sub- 

 quadratis, apice emarginatis, intus apice medio ligula vel lamina 

 basi in carinam transeunti, apice libera obtusa dilatata inflexa, 

 ornatis; antheris brevibus marginibus cartilagineis satis amplis 



ita obtusatis, loculos excedentibus, appendice hyaliuo 

 magno suborbiculari vel oblongo obtusissimo, apice in stigma 

 inflexo, marginibus loculorum profunde excisis ; polliniis ovoideis, 

 caudiculis divaricatis brevibus glandula angusta obtnsiuscula basi 

 affixis. 



In Natalias loco incerto ; leg. Gerrard et McKen. 



This is well distinguished from our only South African species, 

 /-'. iiisij'idum E. Mey., the type of the genus, by its coriaceous 

 leaves, smaller flowers, and the corona-scales. These are not, as in 

 P. insipidum, very concave and fleshy, with a spur-like ligula (as 

 in Asclepias) coming out from the top, but much more flattens I out, 

 of a thinner texture, with a flattened obtuse appendage just below 

 the top of the inner side. Towards the bottom of the corona-scales 

 this appendage is produced in the form of a mere carina, which at 

 last disappears totally before reaching the bottom. The anthers are 

 also much shorter than in the other species ; the pollinia also dis- 

 tinct. This species is only known to me from a small scrap 

 collected by Gerrard & McKen in Natal. 



There is a plant in cultivation in the Botanic Gardens at Durban 

 (Natal), which has been received from Kew, said to be of South 

 African origin, which may be an allied species to our plant, but 

 with mnch larger flowers ; however, as its habitat in South Africa 

 seems to me at least very doubtful, I have refrained for the present 

 from describing it. 



19. Sisyranthus schizoglossoides, n. sp. Herba gracilis, 

 erecta, habitu omnino Schizoglossi ; radicibus subfusiformibua 



bis; caule tenuiter simplici vel parum ramoso, glaberrimo, 



