796 xciii. PEDALiACE.E. [Pterodiscus 



glabrous ; branches opposite ; leaves obovate- or oblong-spathulate, 

 fleshy- thickish, succulent, rounded-obtuse at the apex, gradually- 

 narrowed at the base into the petiole of h to 1 j in. long, repand or 

 sinuate-dentate on the margin, densely glandular-lepidote on both 

 faces ; flowers axillary, solitary, scarcely an inch long ; corolla between 

 funnel- and salver- shaped, of a bright deep orange colour ; the tube 

 cylindrical, h in. long, ^ in. in diameter ; the limb 5-lobed, spreading, 

 sub-bilabiate ; stigma deeply bilobed ; fruit drooping, ovoid-pyramidal, 

 4-winged ; the wings semicircular, broad, radiately plicate, scarious, 

 entire on the margin. In a sandy place at the banks of the river Bero 

 near Mossamedes ; only one old specimen ; fl. and fr. July 1859. No. 1658. 



2. ROGERIA J. Gay ; Benth. k Hook. f. Gen. PI. ii. p. 1057. 

 1. R. adenophylla J. Gay in Ann. So. Nat., ser. 1, i. p. 457 (1824). 

 MosSAMEDES. — An annual herb, 1 to 1\ ft. high ; flowers handsome ; 



corolla orange in colour outside, the interior of the tube and the whole 

 limb felted with a pale purple velvet : capsule many-sided, scarcely 

 quite 4-celled, beaked with the remains of the style, the beak obliquely 

 truncate ; testa of the seeds deeply foveolate or scrobiculate. At the 

 rocky bank of the river Bero, among tall bushes, fl. and fr. Aug. 1859, 

 and at the bank of the river Maiombo in Oct. 1859 ; one specimen in 

 each place. Xo. 1657. A herb of 2 to ?> ft. : leaves glaucous ; flowers 

 large, Bignonioid, glaucous-purple. At Pedra do Rei, near Boca do 

 Bero ; one specimen ; fr. Oct. 1859. A plant well worth cultivating. 

 Coll. Carp. 42. 



The plant affords a mucilaginous infusion which is useful in cases 

 of diarrhoea, etc. 



3. SESAMOTHAMNUS Welw. in Trans. Linn. Soc. xxvii. p. 49 

 (1869) ; Benth. & Hook. f. Gen. PL ii. p. 1058. 



1. S. benguellensis Welw., I.e., p. 50, t. 18. 



Bu-Mno.— A much-branched, spiny, arborescent shrub as tall as a 

 man, or rather a shrubby tree, leafless during the greater j)art of the 

 year, sparingly flowering, more sparingly and only in copiously rainy 

 years fruiting ; trunk 1 to 3 ft. in diameter, at the height of scarcely 

 Ih ft. divided into 3 to 7 tortuously ascending branches as thick as a 

 man's arm ; bark of the trunk from whitish to ashy, smooth, here and 

 there horizontally rugulose ; branches irregularly ramulose ; branchlets 

 erect-patent, very crowded ; twigs spinescent, bearing on their axils 

 leaf-buds wrapped in short whitish wool, floriferous below the apex ; 

 leaves sub-fasciculate in the axils of the spines, obovate-oblong, 

 glaucous-green, somewhat fleshy and rigid, very obtuse and mucronate 

 with a slender seta at the apex, narrowed at the base into the petiole, 

 opening a little after the flowering, falling soon afterwards, articulate ; 

 base of the petiole persistent on the stem and remaining in the form 

 of a spine always truncate at the apex ; flowers handsome ; corolla 

 from whitish to rosy outside ; the tube elongated, with a long spur at 

 the base ; the spur conical-lanceolate, almost an inch long ; the limb 

 spreading, 5-lobed, white or milk-white ; fruit dusky black, almost 

 like that of a Scsamu/n. In rocky mountainous sparingly bushy places 

 in Serra da Cazimba, on dry hills composed of a sandy schist, between 

 Cazimba and Quitil^e, at an elevation of GOO to 1000 ft., sporadic ; with 

 a few fl.-buds and a simple open fl. Oct. 1859, in company with 

 JloocUa parvifiora, N.E. Br. (Welw. Herb. no. 42G5) and Catnphractea 



