322 TWO NEW GENERA OF ASCLEPIADEffi. 



Glossostelma angolense Scbltr., sp. n. Herba erecta, glabra, 

 3-pedabs ; caule tereti, valido, stricto, satis dense foliato ; foliis 

 patentibus subspatbulato-oblongis, apice brevissime apiculatis, 

 utrinque glabris, subtus glaucesceutibus breviter petiolatis, 10-11 

 cm. lougis, infra apicem c. G cm. latis, petiole ad 2 cm. longo ; 

 floribus in iimbellis extra-axillaribus alternantibus paucifloris, 

 brevissime peduucnlatis, pedicellis patentibus, quam pedunculo 

 duplo vel plus quam duplo longioribus ; floribus in ordine inter 

 majores, fide collectoris viridi-purpurascentibus, campanulatis ; 

 calycis segmentis ovatis vel ovato-oblongis breviter acutis vel 

 obtusis, glabris, 0-7-0-8 cm. longis, medio fere c. 0'4 cm. latis ; 

 corollffi lobis erectis, oblongis, obtusis, basi vix tertia parte in 

 tubum brevem connatis, oblongis obtusis c. 2 cm. lougis, medio 

 fere vix 1 cm. latis, utrinque glabris ; coronje tubo brevi tubo 

 stamineo alte adnato ; apicibus liberis 5 erectis, lineari-ligulatis 

 obtusiusculis, antherffi vix longiori dorso appressis ; antberis sub- 

 quadratis, marginibus cartilagineis basin versus ampliatis alpe- 

 formibus, loculis fequilongis, appendice byalino rotuudato obtuso 

 apice in stigma inflexo, marginibus loculorum rotundato-emargi- 

 natis ; polliniis compressis oblique oblongis obtusis, caudiculis 

 pendulis flexuoso-tortis, satis longis, glandula oblonga obtusa 

 crassa, pro magnitudine poUiniorum satis magna ; stigmate 

 generis. 



Habitat in terra Angolensi ; in silvis de Pandas prope Maugue, 

 in districtu Pungo Andongo, alt. 2400-3800 ped., Jan. 1857, Wel- 

 witsch, No. 4190! 



A most remarkable and distinct genus, witb tbe babit of an 

 Asclepias of tbe Pachycarpus section, but witb a corona wbicb 

 removes it far from tbat genus, and brings it nearer to Cynanchiim. 

 Only a single plant of this was collected by Welwitscb, and be gives 

 a note on bis original ticket saying tbat it is very rare. The flowers 

 are of rather large size and purplish, which would make the plant 

 very showy. The specimen in the British Museum is rather im- 

 perfect, there being only a few leaves, with their internodes and 

 flowers ; but Welwitscb has given on his label a good description, 

 with the aid of which I was able to draw up my diagnosis. 



Plate 352. 



A. Sympliytonema madagascarie7isis Schlecht. Plant ; nat. size. 1. Flo\yer. 

 2. Ditto, after removal of corolla and stamens. 3. Portion of corolla and corona 

 viewed from the inside. 4. Portion of corona removed from corolla. 5. Anther. 

 6 <Sr 7. Two views of poUinia ; cell enlarged. 



B. Glossostelma angolense Schlecht. 1. Flower. 2. Ditto, corolla and 

 stamens removed (1 & 2 nat. size). 3. Petal x IJ. 4. Corona and andrcecium. 

 5 & G. Anther viewed from outside and inside respectively. 7. Pollinia (4-7 

 enlarged). 



