Dorstenici] cxvii. morace^e. 1025 



10. DORSTENIA Plum., L. ; Benth. & Hook. f. Gen. PI. iii. 

 p. 366. 



1. D. (Sychinium) Psilurus Welw. in Trans. Linn. Soc. xxvii. 

 p. 71 (1869) ; Bureau in DC. Prodr. xvii. p. 272 (1873), excl. var. 

 scahra-, Ficalho, PL Uteis, p. 269 (1884); Engler, Bot. Jahrb. 

 XX., 1, p. 140. n. 5 (1894), and Mon. Morac. Afric. p. 20 (1898); 

 Pe Wild. & Dur. PI. Tlionner. Congol. p. 10 (1900). 



PuNGO Andongo. — A perennial, caulescent herb, 2 to 2h ft. high ; 

 rhizome tuberous, after the manner of Dentaria, very pleasantly 

 aromatic ; leaves membranous, almost like those of Artocarpus com- 

 munis Forst. ; receptacle with 1 or 2 long tails ; stamen 1 ; filament 

 somewhat compressed ; achenes crustaceous ; style adpressed to the 

 achene after fertilization, bifid at the apex ; seed parietal, attached at 

 the upper part of the fruit-cavity ; testa membranous ; umbilicus 

 rather broad, flat, orbicular ; albumen scarcely including the whole of 

 the embryo ; cotyledons obovate, slightly veined. In narrow moist 

 deep very shady valleys at the fissures of rocks in Mata d^e Pungo in 

 the prgesidium, not uncommon ; fl. and fr. end of Dec. 1856 and Jan. 

 and Feb. 1857. No. 1564. 



The Fungi, nn. 8 ^cklium sp., Welw. & Curr. in Trans. Lmn. 

 Soc. xxvi. p. 293 (1868), and 184 Puccinia (vel Uromyces f) Dorstenia; 

 Lagerh. in Bol. Soc. Brot. vii. pp. 130, 131 (1889), grew on the leaves 

 of this plant. 



The following No. is without fl. or fr. ; it was considered by 

 Welwitsch to belong to the same species : — 



GoLUNGO Alto.— A herb, a foot high, with a tuberous root. In the 

 very shady parts of the Quisucula primitive forest near Bango, Feb. 

 1855 and May 1856, very sporadic. No. 1563. 



2. D. (Kosaria) vivipara Welw., I.e., p. 70 ; Bureau, I.e., p. 273 ; 

 Engler, U.cc, p. 141. n. 13, & p. 21. 



Pungo Andongo.— A perennial herb, 6 to 9 in, high, bulbiferous 

 in the axils of the lower leaves ; bulbils lactescent, viviparous ; stems 

 ascending, weak, very brittle, cylindrical, thinly puberulous, lactescent ; 

 leaves membranous, thinly fleshy, slow and difficult to dry, puberulous, 

 herbaceous-green above, pallid greenish beneath ; receptacles on long 

 stalks in the axils of the upper leaves, cyathimorphous, somewhat 

 fleshy, lactescent, many-flowered, 6- to 8- or rarely 9-radiate on the 

 margin or limb, the rays more or less patent or erect-spreading ; 

 flowers embedded in the somewhat fleshy margined pits of the recep- 

 tacle, the male ones superficial inserted on the disk of the receptacle 

 and mixed with the styles of the female ones, the styles bursting from 

 the body of the receptacle through a disciform diaphragm ; ovaries 

 fleshy-gelatinous, 1-celled, irregularly hidden in the body of the some- 

 what succulent receptacle, showing only the stigmas on the surface of 

 the disk, at length projecting in an elastic manner the seed from a 

 gaping chink ; seed ovoid-angular, obscurely trigonous, papillose, not 

 hooked. In remarkably shady places at the sides of the rivulet 

 Candange Camatuta and in the praesidium ; plentiful but only in a 

 few spots ; fl. and fr. middle of Dec. 1856, and Jan. and Feb. 1857. 

 No. 1565. 



3. D. (Kosaria) benguellensis Welw., I.e., p. 71 ; Bureau, I.e., 

 p. 274; Engl. Mon. Morac. African, p. 24 (1898). 



HuiLLA.— An erect, perennial herb, i to 2 ft. high ; root large, 



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