CONTRIBUTIONS TO BOTANY. 
53 
are 2-lobe(l and 4-celled. This tribe will consist of the genera 
Icacina, Apodytes, Rhaphiolepis, Mappia, Desmostachys, Leretia, 
and Poraqueiba. 
2. Sarcostigmea. These differ from the preceding tribe, in 
the absence of a more or less elongated style : here the true 
style, seen only in a young state of the ovarium, consists in a 
broad, depressed, conical and more or less hollow process, having 
a very small apical aperture, which is terminated by 4 or 5 ex- 
tremely minute stigmatic teeth : with the growth of the ovarium, 
this assumes a more fleshy, broader, and more discoid appearance, 
and the stigmatic teeth become less visible, the whole soon taking 
the form of a depressed, 4-5-lobed, sessde stigma. The ovarium 
and fruit, in their structure and development, resemble what is 
seen in the former tribe ; the stamens are also equal in number, 
and alternate with the petals, and the anthers are likewise 2-lobed 
and 4-celled. This tribe will consist of Pennantia, Stemonurm, 
Sarcostigma, Discophora, and probably also Phlebocalymna. 
3. Emmotece. This at present is only represented by a single 
genus, Emmotum of Desvaux, which is certainly identical with 
Pogopetalum of Bentham, and which diflFers from all the others in 
its plurilocular ovarium, and the singular structure of its anthers, 
which are 2-lobed,and consist of 2 unilocular, evalvate and boat- 
shaped pollen-cells attached to a cordate and apiculate connective, 
flxed extrorsely upon the reflexed point of the filaments in the 
sinus of its anterior face, the pollen escaping by the splitting of 
the dorsal margin of each valve from the posterior smTace of the 
connective, along the whole line of its attachment ; they varv 
also in having an ovarium with three cells laterally placed in the 
manner before mentioned. These pecuharities, so very opposite 
in character to the features we invariably meet with in the other 
tribes, very naturally suggest a doubt as to the propiaety of re- 
taining this genus in the order ; but no satisfactory conclusion 
on this head can be entertained, until some information be ob- 
tained respecting the structure of the fruit and seed. 
I take this opportunity of remarking, that I have lately exa- 
mined vrtth attention the features of several genera newly proposed 
and described by Prof. Blume, in his 'Mus. Lugd. Bat.,’ and 
referred by him to the Olacacea. Among them is Nothapodytes 
[loc. cit. p. 248), which will be seen to conform in all respects 
with Mappia (Jacq.), a genus shortly to be described at length. 
The characters given of his Pleuropetalum {loc. cit. p. 248), by 
the same distinguished author, will easily be recognized as those 
of Bursinopetalum of Dr. Wight, placed by that eminent botanist 
in Olacacea, but which I have shown must be referred to Aqui- 
foliacece, it being nearly allied to Villaresia : having to describe 
in the sequel some new species of both these genera, I 1x111 then 
