MR. G. BENTHAM ON AFRICAN ANONACE^. 469 
4. Unona, Linn. f. ; Benth. et Hook. f. Gen. PL 24. 
The genuine species of this genus hitherto described are all Asiatic; or Australian : the 
two following African ones have been seen in flower only, but in that respect they agree 
well with some of the Asiatic ones in all essential points. The North American 
Asiminas might also be well considered as a section of Unona, but more nearly allied to 
several of the Asiatic than to the African species. 
1. U. hirstjta, sp. n. ; foliis breviter petiolatis ovali-oblongis obovatisve obtusis ba i 
cordatis subtus ramulisque ferrugineo-liirsutis, pedunculis supra medium angusto 
bracteatis, sepalis lato-lanceolatis, petalis tomentosis exterioribus ovato-laneeolatis 
9-11-costatis interioribus minoribus. — Frutex 20-pedalis. Folia 4-6* poll, longs, 
2-3 J poll, lata, petiolo 2-3-lineari hispido fulta, supra glabra, subtus elevato-penni- 
nervia et transverse reticulato-venosa, pilis ferrugineis pneeertim ad costns 
hispida. Pedunculi laterales v. subterminales, irregulariter fa^ciculati, florid i sub- 
pollicares, rigidi, 1-flori, bract ea lanceolata amplectente tomentosa 4-5-liiuaii. 
Sepala in floribus suppetentibus 5 lin. longa, vix basi connata, patent ia. Petala 
exteriora 9-10 lin. longa, prope basin fere 6 lin. lata; interiors multo minora, Bed 
verisimiliter nondum perfecte evoluta. Torus fere planus. Stamina num< rosissima, 
connectivo ultra loculos crasso planiusculo. Gynaecii carpella plurima, hispida, 
pauciovulata ; styli elongati, recurvi, intus sulcati. Fructus ignotus. 
Fernando Po (G. Mann). 
2. U. obovata, sp. n. ; foliis obovatis v. obovato-oblongis membranaceis utrinque ramu- 
lisque molliter pubescentibus, pedunculis unifloris prope basin bractea orbicu- 
lato-cordata stipatis, petalis latis demum obtusissimis tomentosis. — Frutex ramulis 
gracilibus, novellis pilis crispulis tomentosis, annotinis glabratis. Folia obtusa, 
majora 3-3J poll, longa, supra medium fere 2 poll, lata, infra medium 
o 
basi obtusissima v. cordata, membranacea, in sicco utrinque pallide virentia, pen- 
ninervia, petiolo 2-3-lineari. Pedunculi laterales v. terminales, solitarii, 1-flori, 
graciles, per anthesin subpollicares. Bractea basin pedunculi amplectens, tomen- 
tella, 5-6 lin. diametro. Sepala lata, obtusissima, 2 lin. lata, tomentella, basi brevis- 
sime connata. Petala tomentosa, in alabastro acutiuscula et biseriatim valvata, in 
flore magis evoluto patentia, exteriora 5-6 lin. longa, fere orbiculata, obtusissima, 
extus subsericeo-pubescentia, tenuissime pluricostata, interiora multo minora. 
Torus fere planus, hirsutus. Stamina numerosa, connectivo ultra loculos crasso, 
truncato. Gynsecii carpella plurima, villosa, ovulis 6-8 subbiseriatis ; styli breves, 
recurvi, glabri. Fructus ignotus. 
Hot- springs at the foot of Moramballa on the Zambesi (Kirk). 
Amongst Asiatic Unonce this comes nearest to U. dumosa in the orbicular bracts and 
obtuse petals ; but the much smaller flowers give it a very different aspect. The fruit is 
unknown ; and the ovules, more evidently arranged in two rows than in most species, 
indicate that the berries are most probably not moniliform but continuous as in U, 
pannosa, Dalz., and as in the closely allied genus Asimina. 
