97 



NEW AFRICAN ASCLEPIADS. 



By R. Schleghter and A. B. Rendle. 



Baseonema, gen. nov., subord. Periplocea. Calyx late cam- 

 pannlatus, segmentis 5 brevibus triangulari-ovatis, glandulis 5 

 minutis subulatis interpositis. Corolla alte 5-fida, lobis oblongo- 

 ligulatis arete reflexis, tubo glandulis 5 brevibus crassis subter 

 stamina et cum illis alternantibus coronato. Filamenta e basi lata 

 subito filiformia, antherfe glabrae sagittatae, cum apiculo triangular!. 

 Pollen granulosum, translatoribus spathulatis corpuscula subro- 

 tunda instructis. Stigma convexum umbonatum. 



B. Gregorii, sp.nov. (PI. 356 b). Frutex ramis longis teretibus 

 sparse puberulis ; foliis breviter petiolatis orbicularibus obtusis 

 breviter pubescentibus ; cymis effusis tricliotome tum dichotome 

 ramosis ; floribus longe pedicellatis, alabastris obtuse triangularibus 

 hirtellis ; calycis segmentis quam petala multoties brevioribus ; petalis 

 obtusis margine et dorso velut calyce hirtellis, glandulis crassis 

 truncato-pyramidalibus. 



Hab. Kinani, East Ongalea Mts., J. W. Gregory, 1893. 



The long woody branches tapering very gradually from a base 

 about 2 lines in diameter. The leaves lf-2 in. long and broad; 

 petioles 4-6 lines long ; branches of inflorescence 4-5 in. long ; 

 pedicels 1 in. Flower-buds ^ in. long. The calyx-segments are 

 ^ line long ; the corolla-lobes 4 by 1^ lines, sharply reflexed. The 

 stamens (2^ lines long) rise separately from the corolla with an 

 ovate triangular base (^ line long), passing into the very slender 

 upper half of the filament {\ line long) ; the pollen-carriers are 

 shaped like a shoe-horn, and 1 line in length ; the short appendages 

 of the anthers converge over the top of the short stigma. The short 

 thick glandular appendages of the corolla are less than ^ line long ; 

 they rise from the top of the very short tube just below the insertion 

 of the stamens, with which they alternate. 



Near Pentanura Bl., from which, however, it is at once dis- 

 tinguished by the almost exappendiculate anthers with broad bases, 

 and also by the presence of the whorl of corolline appendages below 

 the stamens. 



Raphionacme Welwitschii, sp. nov. "Herba tubere maximo, 

 depresso-hemisphBerico, 3-5 poll, diametro, copiose lactescente per- 

 ennans ; caulibus flagelliformibus, nunc erectis, nunc volubilibus 

 et scandentibus " {fide Welwitsch MS.) ; foliis oblongis vel spathu- 

 latis, breviter petiolatis utrinque dense cano-pubescentibus ; floribus 

 in foliorum axillis numerosis aggregatis, "ex albido purpurascenti- 

 bus"; calyce velut pedicellis brevibus hirtello, segmentis ovatis 

 cum glandulis singulis minutis linearibus interpositis; corollre non- 

 dum apertse lobis ligulato- oblongis tubum plus duplo excedeutibus, 

 coronae squamis subulatis, cum deute parva utrinque instructis ; 

 antheris oblongo-lanceolatis breviter apiculatis, translatoribus li- 

 goniformibus. 



Journal of Botany. — Vol. 34. [March, 1896.] u 



