Plants Collected in the Percy Sladen Memorial Expeditions. 33 



Key to the Species. 



Tall bushes or small trees, not usually less than 6 ft. high. Ultimate 

 twigs as thick as a goose-quill. Flowers very numerous and crowded. 



Living stems not readily inflammable. Surface of stem dull grey. 



Leaves 3-4-5 mm. long namaqiiensix. 



Living stems readily inflammable. Surface of stem pale yellow. 



Leaves less than 2 mm. long gariepina. 



Low bush, rarely more than 2£ ft. high. Ultimate twigs less than 



1 mm. in diameter. Flowers few and scattered fruticulosa. 



1. C. namaquensis. (Descriptio emendata.) Frutcx vel arbor 

 parva, L2-3 metres altus, ramis pseudo-dichotomis, ramulis ultimis 

 crassitudine pennae anserinae similibus. Rami crassi, fragiles, parti- 

 bus junioribus (in statu sicco) inaequaliter rugosis, glabri, colore 

 tenebrose grisei, saepe pruinosi, hodis prominentibus pulvinoideis 

 6-12 mm. distantibus instructi, e quibus rami quasi cicatricosi videt. 

 Folia sessilia, geminata, carnosa, obovoidea, parum complanata, 

 3-4 mm. longa. Racemi 1-4 e quoque nodo, breves, simplices ; 

 pedunculi inter foliorum bases inserti, saepe complanati, 1-16 mm. 

 (plerumque 8-16 mm.) longi ; pedicelli 1-6, 1-flori, 2-4 mm. longi, 

 bracteis paucis, minutissimis, ovatis, denticulatis irregulariter involu- 

 crati. Portulacaria namaquensis Sond., in Fl. Cap. ii., 386. 



Little Namaqualand : Steep slope facing west, opposite Cbubiessis 

 outspan, 5975, 5976. Also common in tbe Eichtersveld. 



A shrub or small tree, with pseudo-dichotomous branching, the 

 ultimate branches as thick as a goose-quill. Branches stout, brittle, 

 with the younger parts irregularly wrinkled when dry, dark grey, 

 often with a bloom, beset at intervals of 6-12 mm. with prominent 

 pulvinus-like nodes, which give the branches a scarred appearance. 

 Leaves sessile, geminate, fleshy, obovoid, slightly flattened, 3-4 mm. 

 long. Eacemes short and simple, 1-4 from each node ; peduncles 

 inserted between the bases of the leaves, often flattened, 1-16 mm. 

 (usually 8-16 mm.) long ; pedicels 1-6, 1-flowered, 2-4 mm. long, 

 involucrated by a few very minute ovate denticulate bracts. 



2. C. gakiepina, sp. nov. Frutcx, 90-150 cm. altus, ramis brevibus, 

 crassis, pseudo-dichotomis, ramulis ultimis crassitudine pennae anse- 

 rinae similibus, partibus junioribus (in statu sicco) parum rugosis 

 Rami glabri, subfiavi, pruinosi, nodis prominentibus, pulvinoideis, 

 6 mm. vel plerumque minus distantibus, instructi. Folia per 



