364 LIV. MELASTOMACEA. [Osbeckia 
p- 745 (1867). and in Oliv. Fl. Trop. Afr. ii. p. 444; Triana in 
Trans. Linn. Soc. xxviii. p. 57, t. iv. f. 43 (1871). 
Punco Anponco.—An annual, erect, little herb, 3 to 4 (9) in. high, 
usually branched from the base ; leaves membranous ; flowers tetra- 
merous, rosy ; anthers emitting pollen at the small apex. On the 
more elevated exposed moist shortly-grassy declivities amongst the 
gigantic rocks of the fortress in Pedra Cazella ; fl.and young fr. April 
1857, ripe fr. May 1857. No. 909, Annual, 3 to 5 in. high ; by the 
lofty rocks of the fortress ; fr. May 1857. Couu, Carp, 570. 
Huriia.—A slender, erect, gregarious, little herb, hispidulous or 
occasionally pubescent, sparingly branched, a digit high or’ shorter ; 
flowers in terminal clusters, of a pretty rosy colour, fugacious ; petals 
4; stamens 8, all alike ; anthers truncate, pot-shaped (ceramiiform), 
and by this character distinguished from all other Angolan 
Melastomacexw. In rocky situations along streams near Empalanca on 
the Humpata plain, at an elevation from 5200 to 5300 ft. ; fl. and fr, 
beginning of April 1860. Along the grassy margins of streams and 
near the bottom of the rocks throughout the Humpata plain, at an 
elevation from 5000 to 5400 ft., very abundant ; fl. and fr. 13 April 
1860. No. 920. 
2. 0. Welwitschii Cogniaux in DC. Monogr. Phan. vii. p. 333. 
Punco AnponGo.—A sarmentose or subscandent undershrub, with 
rose-purple flowers. By the Canandia river, within the fortress ; fl. 
and fr. Jan. 1857. No. 907. Ashrub. In bushy places by the river 
Cuanza near Sansamanda, sporadic ; fl. and fr. Feb. 1857. No. 9070. 
AmeBaca.—A herb, apparently annual or biennial, 2 to 4 ft. high, 
quasi-scandent among shrubs, with rambling branches and rosy flowers. 
In mountainous swamps near Puri-Cacarambola ; fl. Oct. 1856. No. 908. 
3. 0. hirsuta Cogniaux in DC. Monogr. Phan. vii. p. 334 (1891). 
Punco AnponGo.—An erect, rather rigid, strigulose herb, 14 ft. 
high, with purplish flowers. In exposed pastures among short bushes 
at the margins of pools, between Condo and Quisonde and near Lombe, 
very rare ; fl. and fr. March 1857. No. 905. 
4. 0. multiflora Sm. in Rees, Cyclop. xxv. n, 7 (1813) ; Hook. 
f. in Oliv. Fl. Trop. Afr. ii, p. 442 ; Cogniaux, Le., p. 332 (1891). 
Dissotis multiflora Trianain Trans, Linn. Soc. xxviii. p.58 (1871). 
GoLtuNnco Atro.—An elegant erect herb, 2 to 33 ft. high, with 
handsome violet-purple flowers. In the mountainous rather shaded 
parts of the more elevated forests of Sobato de Quilombo- 
Quiacatubia, from 2000 to 2500 ft. alt., on moist clay, very rare; fl. 
and fr. Feb. 1855. No. 898. 
2. TRISTEMMA Juss. ; Benth. & Hook. f. Gen. Pl. i. p. 746. 
1. T. incompletum Br. in Tuckey, Congo (App.), p. 435 (1818). 
Melastoma sessilis Schum. Beskr. Guin. Plant in Danske Vid. 
Selsk. Naturv. iii, p. 239 (1828). 7. Schwmacheri Guillem. & 
Perrott. Fl. Senegamb. p. 311 (1833) ; Hook. f. in Oliv. Fl. Trop. 
Afr. ii, p. 446 ; Cogniaux in DC. Monogr. Phan. vii. p. 361 (1891). 
Var. grandifolium (Cogn., J.c.). 
_ GoLunco ALTo.—An undershrub, woody at the base ; stem ascend- 
ing, obtusely quadrangular ; calyx obovoid, 5-toothed ; the teeth erect, 
