Tap. 6260. 
ICACINA Mannu. 
Native of Old Calabar. 
Nat. Ord. Ovacinem.—Tribe IcacinEax. 
Genus Icactna, A. Juss. (Benth. and Hook. f. Gen. Plant. vol. i. p. 852). 
Icactna Mannii ; frutex scandens, ramis gracilibus glabris, foliis breviter petiolatis 
ellipticis caudato-acuminatis integerrimis basi rotundatis membranaceis 
glaberrimis y. costa subtus et petiolo puberulis, costa nervisque remotis 
gracilibus, floribus in eymas fasciculatas v. dichotomas axillares brevissime 
pedunculatas sericeo-hirsutas dispositis flavis, bracteis minutis, calycis lobis 
ovatis, petalis extus sericeis intus barba transversa excepta glabris, stigmate 
punctiformi. 
I. Mannii, Oliv. Fl. Trop, Afr. vol. i. p. 357. 
The genus Joacina consists of but few species, all as 
far as hitherto observed, natives of Western Tropical Africa ; 
their uses, if any, are unknown, and they vary much in habit. 
The type of the genus J. senegalensis, Juss, has terminal long- 
peduncled panicled cymes of flowers, as described in the 
generic character published in the “Genera Plantarum.” 
Since that work appeared, however, other species have been 
added by Professor Oliver, from West African collections, 
in one of which the flowers are in axillary dichotomously 
branched very spreading cymes, whilst in another, the sub- 
ject of the present plate, the inflorescence is reduced to almost 
sessile fascicles, which, however, on careful examination, are 
found to be reducible to shortly peduncled forked cymes. 
I. Mannii is a uative of the Gulf of Guinea, where it was dis- 
covered at Old Calabar by Mr. Gustav Mann (now Inspector 
of India-rubber Forests in Assam), when collecting for the 
Royal Gardens in 1863; he, however, sent no living specimens. 
In 1865 its large tuberous roots were sent by the Rev. Mr. 
Thompson, to Mr. Clark, of the Glasgow Botanical Garden, 
which flowered in October, 1870, and from which the accom- 
panying drawing was made. 
Descr. Root a large tuber 6—12 inches in diameter (Clark). 
