Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/118

 98 NEW AFRICAN ASCLEPIADS. Hab. Ambaca. " In dumetis sylvestribus arenosis inter Halo et Zamba," Oct. 1856, Welwitsch, no. 4234. According to a rough sketch by Welwitsch, the upper surface ot the tuber has the form of a plate, from the centre of which spring the long whip-hke shoots ; one of the two preserved is 2i ft. long ; they are dull reddish in colour, and slightly puberulous. The pairs of rather small leaves are separated by long internodes ; they vary in shape from oblong to spathulate ; the largest is 1^ in. long, including the short petiole, by f in. broad ; their dense pubescence gives them a sage-green colour. The calyx-segments are 1 line long; the corolla-tabe 1 line, the lobes a little over 2 lines by 1 broad ; the corona-segments situated at the top of the corolla-tube are 2 lines ; the linear filaments are scarcely |- line long, the anthers 1 line ; the pollen -carrier (| line long) has a slender stalk termi- nating in a triangular upper part, the whole shaped like a mattock. Is most nearly allied to the South African B. Flanagani Schltr. and the Tropical African R. voluhilis Schltr., but is easily dis- tinguished by its leaf-characters and shape of the corona-segments, the filiform median tooth of the latter occurring in the two allied species being absent in ours. Schizoglossum fusco-purpureiim, sp. nov. " Herba pedaHs, gracilis, filifolia, radice conico-tuberosa, lactescens," foliis margine revolutisvelutcaulepuberulis ; inflorescentiisparvisaxillaribus ; flori- bus parvulis, fusco-purpureis, velut pedicellis externe pubescentibus; calycis segmentis lanceolatis acutis ; corollas lobis oblongis obtusis; coronge squamis quinquangulis, dente mediano et processu parvo sub angulis superioribus instructis ; antherse appendice rotunda membranacea ; polliniis oblongo-clavatis. Hab. " Sparse in dumetis subsiccis arenosis prope Huilla," Nov. 1859, Welwitsch, no. 4177. The description is based on a sketch of a plant and on a small flower-bearing branch, both in the British Museum. The very narrow leaves are 1^ in. long, shorter in the floriferous part of the shoot. The pedicels are 2 lines long, the calyx- segments 1 line, the corolla- , lobes just over 1 line long and ^ line broad. The corona-segments are | line long, including the membranous triangular median tooth which they bear just below the obtuse apex. Is very near 8. ynasaicum N. E. Br., from Kilimanjaro, but dis- tinguished by the more membranous texture of its flowers, the differently shaped corona-segments and pollinia, the latter being pyriform in the East African species. Schizoglossum angolense, sp. nov. Herba parva e tubere subconico et pro ratione magno nascens ; caule basi lignoso mox herbaceo et ramoso ; ramis patentibus ; foliis linearibus apice pungentibus ; floribus viridescentibus umbellatis, umbellis ramos terminantibus vel axillaribus ; calycis segmentis rotatis anguste lanceolatis acutis ; corollas lobis patentibus ovatis vel oblongo- lanceolatis ; coronas squamis ovatis lobo obtuso super basin ro- ■tundam utrinque instructis, et facie interne bicarinatis ; filamentis brevissimis, antheras appendice breviter ovata, stigma planum