38 
[6n ac Tabernanthe Iboga, Baill. ian Bull. Soc. Linn. Paris, 
782); was collected by Mann in the Gaboon (No. 943), and by 
Welwitsch i in Angola (No. 5950). - Professor Oliver who drew up the 
deseription in the Zcones adds “ first discriminated by Dr. Baillon; but 
its position left doubtful though oi points of contact with 
montana and other groups of Apocynacee, were vee indicated by 
him. Were it not for the i consolidation of the carpels. 
would hardly hesitate to merge it in Tabernemontana pe du. 
It is described as having a large bitter root, eaten by the Gaboon people. 
‘Ts la diseni enivrante, aphrodisiaque, et avec elle ils prétendent qu'on 
n'éprove aueun besoin de sommeil! Dr. Baillon in his Hist. de Plantes, 
X. 170, says the Voie of the Gaboon is a * plante médicamenteuse 
des plus remarquab 
"This is uie all that is known of the plant at present. 
Further material is kindly being sought for by Dr. Hugo Müller. 
When this arrives it may be possible to investigate the medicinal 
properties of the plant more fully. 
iia REFERENCE TO Prate. 
cine: ‘Tabernanthe Iboga, Ball |. 
mera "Bud. g DE Coane mid open: "4. An- 
her. 5. Pistil. -6. Trai -7. Same near 
A enlarged. 
CCCCXLIV.--SIAM PLANTS. 
Mr. F. H. Smiles a gentleman attached to the Royal Survey 
Department of Siam, has presented a small collection of dried plants 
made by himself in the mountains of th the interior of the northern 
part of that country. The specimens are not all that could be desired, 
this being Mr. Smiles's first essay in collecting and drying plants, 
undertaken without any previous instruction ; but they inelude several 
interesting novelties MÀ represented for description. mark- 
oe ate other things is a new genus of Scitaminee of quite an 
T 
( Ribiaceat “differing from those previously known in its small dimen- 
sions, exceeding slenderness, and one- flowered stems. Mr. Smiles left 
England agai iam i 
if circumstances permit of making further botanical collection 
Judging from what is known a the countries to the north, there mist bé 
a very rich flora in Upper Si 
The new genus of epost which is now deseribed is remarkable 
in several particulars, but more especially in having unisexual flowers, 
and in the absence of a labellum and of staminodia of any kind what- 
soever, e specimens consist of two slender stems, six to nine inches 
— naked below, as if pulled away from a tuberous aie and 
Foo mc e ' in its axil. There are. about or 
ees soos globular spikelets about half-an-inch in diameter in each 
