Linnccan Society. 



231 



feet. 



Churra Punjee 4349 



Surureem 5 GOO 



Moflong 5942 



Myrung 5940 



Nunklow 1553 



The climate is described to be excessively moist, which will ac- 

 count for the large number of mosses collected in the journey by Mr. 

 Griffith, forming about one eighth of the entire family, 1324 being 

 the amount of species enumerated by Bridel in his Bryologia Uni- 

 versa. We subjoin a list of the genera, together with the number 

 of species contained in each. 



Sphagnum 1 



Polytrichum 6 



Diphyscium 1 



Gymnostomum 7 



Orthodon 1 



Orthotr'iclt am. 5 



Schlotheimia 1 



Weissia 3 



Barb ula 3 



Grimm ia 3 



Trematudon 2 



Dicranum 13 



Fissidens 10 



Didymodon 4 



Funaria 2 



Brought up 62 



Bartramia 3 



Brachymenium 3 



Br yam 7 



Pterogonium 4 



Neckera 20 



Daltonia 1 



Plearopas 3 



Anhymenium 1 



Hookeria 4 



Leskea 7 



Hypnum ... 28 



143 

 Undetermined 9 



62 Total species 152 



The collection contains Sphagnum obtusifolium, Polytrichum urni- 

 gerum and aloides, Weissia Templetoni, Dicranum scoparium and glau- 

 cum, Bartramia fontana, and several others familiar to the European 

 muscologist ; but the far greater part of the species have not been 

 previously described. 



March 20.— Dr. Horsfielcl, V.P., in the Chair. 



Read a description of the Mora tree. By Mr. Robert H. Schom- 

 burgk. Communicated by George Bentham, Esq., F.L.S. 



This tree is a native of the forests of British Guiana, where it. at- 

 tains a large size, the trunk often exceeding ninety feet in height, 

 with a circumference of upwards of twenty feet. The trunk pro- 

 duces large buttresses at its base, which from their partial decay 

 afterwards become hollow beneath, and form a chamber capable of 

 sheltering several persons standing erect. The tops of these but- 

 tresses, and the trunk itself, are found clothed with innumerable 

 epiphytes, which greatly add to the singularity of the tree. The 

 tree affords timber of excellent quality, being close-grained, strong, 



