DR. LINDLEY ON WEST AFRICAN TROPICAL ORCHIDS. 137 
15. A. IMBRICATUM ; caulescens, foliis coriaceis ovato-oblongis obtusis 
oblique bilobis, spicis sessilibus densis oblongis multifloris bracteis 
inferioribus ovatis acutis carinatis imbricatis, floribus carnosis, sepalis 
petalisque ovatis acutissimis, labello oblongo apiculato cucullato basi 
infundibulari calcare brevi obtuso uncinato, (caudicula simplici lineari, 
glandula recurva). 
* On trees in dense masses abundant in the lower parts of the river. 
Flowers white, very fragrant, inconspicuous. On still nights the river 
resembles a close Orchid-house, in which Cymbidium sinense is in 
flower. Onitscha." (1484) Barter. 
Leaves about 6 inches long by 1} broad: Spikes 1} inch long. 
16. A. cAPITATUM ; acaule, foliis pergameneis loratis basi canaliculatis 
apice oblique dentatis, spicis sessilibus capitatis radicalibus, bracteis 
oblongis membranaceis obtusis, sepalis petalisque oblongo-linearibus 
obtusis membranaceis, labello concavo obtuso rhombeo margine cre- 
nulato caleare pendulo apice inflato ovarii longitudine, (anthera ro- 
strata, caudiculis 2 discretis acuminatis, glandula hippocrepica). 
* Flowers pale rose-coloured. Brass." (1857) Barter. 
The plant out of flower resembles some JMaaillaria, such as 
Baueri. The capitate inflorescence is very remarkable. 
Eprpocum, Gmelin. 
l. E. NUTANS, Lindl. in Journal of Linnean Society, i. 177 (Galera 
nutans, Blume). 
“ Flowers white with purple specks, Ambas Bay, February 1861.” (784) 
Mann. 
This seems to differ in nothing important from the common 
Indian form ; the two lines of hair on the lip are, however, rudi- 
mentary only, and the lip itself is perhaps more fleshy than usual. 
VANILLA, Plumier. 
l. V. AFRICANA; folis membranaceis anguste ovalibus acuminatis, 
spicis basi foliosis, labello trilobo infra medium intus carinato cucul- 
lato lobis lateralibus rotundatis intermedio ovato acuto ramentis qui- 
busdum ad apicem carine. 
“On large trees. Brass.” (47) Barter. 
A slender delicate species, formerly cultivated by Loddiges, with 
whom it flowered in March 1849, when I gave it the present name, 
under which it was dispersed. 
2. V. sp. | No flowers. 
“ Abundant about Angiama.” (2134) Barter. 
I cannot identify the leaves with those of any published species. 
