358 THE JOURNAL OF BOTANY 



10. P. RoGEESii, comb. nov. L. Bogersii Kensit in Trans. 

 Boy. Soc. Africa, i. 147 (1909). 



Tliis species is unknown to me, but judging from the descrip- 

 tion is very distinct. " Shrublet 26 cm. high, with erect, glabrous 

 branches. Leaves sessile or very shortly petiolate, trifoliolate ; 

 leaflets linear, narrowing towards the base, acute, spinescently 

 mucronate, complicate, or the margins strongly involute, glabrous, 

 the younger sericeous ; terminal leaflets 1-3-1-9 cm. long, the 

 lateral 0-7-1 cm. long, 0-15 cm. broad. Spikes 3-4-flowered, 

 shortly pedunculate, axillary or terminal ; bracts broadly obovate, 

 mucronate, 0-3 cm. long, 0-25 cm. broad, sericeous. Calyx sub- 

 inflated, 0*8 cm. long, sericeous ; segments small, subulate, the 

 lower segment, 0-25 cm. long. Flowers similar to those of 

 P. siuaziensis and P. muUiJiora." 



Kalahaei Eegion. — Transvaal ; Low Veldt ; rivulets, Bogers, 

 Herb. Bolus, 430. 



11. P. swaziensis, comb. nov. L. stcaziensis Bolus in Trans. 

 S. A. Phil. Soc. xvi. 381 (1906). 



Not unlike P. multiflora Dlimmer in habit and in the nature 

 of the indumentum, but more leafy, with broader leaflets and 

 fewer flowers. Leaves trifoliolate ; leaflets broadly cuneate, 

 rotundate, nearly truncate or emarginate, mucronate, with a 

 prominent midrib beneath ; terminal leaflet 10-13 mm. long, 

 4-5-5 mm. broad, lateral shorter or occasionally half as long. 

 Spikes terminating lateral branchlets, very short, 2-4-flowered, 

 occasionally 1-flowered. 



Kalahari Eegion. — Swazieland ; on grassy hills and in the 

 valleys near Dalriach and Mbabane, 1320-1410 m., Bolus, 11,766 



{Herb. Keiv). 



Description of Plate 525, 



Fig. 1. Pearsonia sessilifolia, slightly reduced ; A, calyx ; B, vexillum ; 



C, aLie ; D, carina; E, ovary and style; F, ovary in longitudinal section: all 

 enlarged. Fig. 2. P. Jilifolia, nat. size; A,&\se; B, carina; C, vexillum; 



D, calyx; E, ovary and ^style, x 2. 



ALABASTEA DIVEESA. 



By Spencer le M. Moore, B.Sc, F.L.S. 



XXII. — Asclepiadace^ Africans novje vel rariores.'*' 



(Concluded from p. 346.) 



Xysmalobium tenue, sp. nov. Ehizomate tuberoso tuberi- 

 bus subfasciculatis fusiformibus sparsim radicelliferis collo brevi 

 crasso coronatis, caule ultraspithameo erecto simplici deorsum nudo 

 sursum distanter folioso prima juventute unifariatim pubescente 

 cito glabro, foliis sessilibus anguste linearibus acutis marginibus 

 involutis glabris, umbellis 10-22 floris terminalibus raro inter- 

 axillaribus his dum adsint pedunculo brevi unifariatim pubescente 



* Specimens of all the species described or referred to in this memoir are 

 preserved in the Herbarium of the British Museum. 



