796 xcm. PEDALiACE^. [Pterodiscus 



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

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

 narrowed at the base into the petiole of ^ to 1^ 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, ^ in. long, J in. in diameter ; the limb 5-lobed, spreading, 

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

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

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

 aiear Mossamedes ; only one old specimen ; fl. and fr. July 1 859. No. 1658- 



2. ROGERIA J. Gay ; Benth. & Hook, f . Gen. Pi. ii. p. 1057. 

 1. R. adenophylla J. Gay in Ann. Sc.Nat.,ser. l,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-oelled, beaked with the remains of the style, the beak obliquely 

 -truncate ; testa of the seeds deeply f oveolate or sorobiculate. At the 

 rooky 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. No. 1657. A herb of 2 to 3 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 ciiltivating. 

 "Coll. Carp. 42. 



The plant affords a mucilaginous infusion which is useful in cases 

 of diarrhoea, etc. 



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

 X1869) ; Benth. & Hook. f. Gen. PI. ii. p. 1058. 



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



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

 iman, or rather a shrubby tree, leafless during the greater part 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 

 ij 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 ; branohlets 

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

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

 Jleaves sub-fasciculate in the axUs of the spines, obovate-oblong, 

 ;glauoous-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 spiir at 

 i;he 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 Sesamum. In rocky mountainous sparingly bushy places 

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

 Cazimba and Quitibe, at an elevation of 600 to 1000 ft., sporadic ; with 

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

 Hoodia parmflora N.E. Br. (Welw. Herb. no. 4265) and Catophractes 



