DR. LINDLEY ON WEST AFRICAN TROPICAL ORCHIDS. 123 
allied on the one hand to Dombeya and on the other to Trochetia, 
to which we have given the name of Cheirolena. And amongst 
Griffith's unnamed specimens we have also a new genus of Durio- 
nez, allied to Boschia and Neesia, remarkable for its very small 
flowers with a depressed circular calyx marked by five cavities at 
the base of its lobes, with corresponding protuberances outside, 
and which have suggested the name of Celostegia. As the part 
of our ‘Genera Plantarum’ comprising these Orders is now in the 
press, it would be superfluous to repeat here the characters of 
these new genera. 
With reference to the observations above given on the homo- 
logy of the stamens of Buettneriee, I would add that Professor 
Oliver, whose opinions on similar questions must always have 
great weight, in a paper lately read before the Society, objeets to 
my comparison of the anther of the staminal leaf with the petiolar 
glands of the leaf properly so called. I freely admit that plausible 
arguments may be brought forward against my views; but upon a 
full reconsideration of the subject, I confess myself still further 
inclined to believe that the explanation I have suggested is likely 
to prove correct. 
I have also to add to my former paper on Tiliacex, that, with 
reference to Antholoma, a cursory inspection of specimens during 
my visit to Paris last autumn, and the examination of a bud and 
flower kindly sent to me by M. Brongniart, have fully confirmed 
Dr. Planchon's suggestion that the genus is Tiliaceous—not far 
from .Eleocarpus. It is indeed closely allied to Sloanea, differing 
chiefly in the petals united into a tubular, almost conical corolla. 
I understand that M. Baillon has fully described the plant in 
a number of his ‘Recueil d'Observations' which has not yet 
reached us. 
March 1862. 
West African Tropical Orchids. 
By Dr. Iaorex, F.R.S., F.L.S., &c. 
[Read November 7, 1861. ] 
Most of the plants included in the following succinct enumera- 
tion have been obtained in the Expedition to the West Coast of 
Africa, under the command of Dr. Baikie, R.N. The larger part 
resulted from the investigation of the late Mr. Barter, a most 
zealous and skilful eollector, who unfortunately fell a victim to 
his exertions. The remainder have been sent home by Mr. Gustav 
Mann, who may be fairly pronounced to be second to no one. For 
