Refugium Botanicum. | | [September, 1869, 
TAB. 146. 
Natural Order RHAMNACE. 
Tribe GoUANIE. 
Genus Heuinus (Z. Meyer). Calycis tubo late obconico, ovario adhe: 
rente, limbi lobis 5, patentibus. Petala 5, cucullata, margine disci 
inserta. Stamina 5, petalis equilonga; anthere loculi longitu- 
dinaliter dehiscentes. Discus epigynus planiusculus, tubum calycis 
implens. Ovarium triloculare; stylus trifidus, stigmatibus re- 
curvis. Fructus inferus, coriaceus, obovato-globosus, apice areo- 
latus, intus tricoccus, coccis crustaceis intus dehiscentibus, demum 
ab axi centrali tripartito solutis. Semina plano-convexa; testa 
coriacea nitida, albumine carnoso; cotyledones maxime; radicula 
brevissima.— Benth. et Hook. Gen. Plant. 1. p. 885. 
H. ovatus (EH. Meyer). Ramis gracilibus cite calvatis, foliis late cordato- 
ovatis, mox utrinque omnino glabris, sepalis nudis, fructibus 
leevibus. — Harv. et Sond. Fl. Cap. i. p. 479; Hemsl. Fl. Trop. 
Africa, i. p. 384. 
A native of Natal, and gathered also by Dr. Meller on the 
Livingstone expedition to Zambesi-land, and by Dr. Welwitsch 
in Angola. 
An indefinitely-climbing shrub, with firm gray woody branches 
only thinly silky when young, soon quite glabrous, with firm 
woody tendrils from the axils of some of the leaves coiled up at 
the end lke a watch-spring. Leaves on short petioles, broad- 
ovate or sometimes nearly round, the lower ones an inch or an 
inch and a half long, quite naked on both sides when mature, the 
base cordate, the point with a fine deciduous mucro, the veins 
fine and not conspicuous. Stipules minute, setaceous, deciduous. 
Peduneles slender, naked, six to twelve lines long. The flowers in 
simple umbels of generally four to six flowers each. Pedicels 
naked or when young a little silky, one or two lines long. 
Expanded flower not more than two lines across, the disk filling 
up the central half, the ovate-lanceolate sepals deflexed, the 
stamens concealed in the curious small hooded whitish petals. 
Style filiform, conspicuously three-cleft. Fruit hard, bony, ob- 
ovoid, smooth, a quarter of an inch deep. 
Tab. 146.—1, bud; 2, expanded flower; 3, vertical section of ditto; 
4, single petal; 5, stamen: all magnified.—J. G. B. 

