Notes on Plants at Roraima. 175 
and much-branched stems, five feet high or more, seeming 
to hold suspended in the air a crowd of innumerable, tiny, 
butterfly-like flowers of cream colour and black ; but two 
others, Zygopetalum Burkii, and Epidendron elonga- 
tum, which we have already seen in rank luxuriance, in 
the wetter parts of the swamp, grow also on these drier 
parts, and are here much reduced in general- habit but 
with larger and brighter coloured flowers. Of the ferns 
the most striking are a beautifully delicately cut Schizxa 
(S. dichotoma, Sw. [No. 100]), and a very remarkable 
Gymnogramme [G. elaphoglossoides, Baker, N. sp. 
[No. 101 and 215]), of which more hereafter. 
Again, the tiny coppices which are in the swamp, and 
the forest which bounds it — which forest, it must be 
remembered, covers on the other faces of the Roraima 
slope what is here swamp— are full of interesting trees. 
One, with vast numbers of large magnolia-like white 
flowers is Moronobea intermedia Engler N. sp. [No. 337], 
the new species already alluded to as very closely allied 
to a second new species, M. Jenmani, which occurs in 
corresponding circumstances on the Kaieteur savannah. 
Another abundant tree represents an entirely new 
genus Crepinella gracilis, Marchal [No. 192] ; another 
is a new species of Sciadophyllum (S. coriace7i?n, 
Marchal, [No. 128]). Another common and strikingly 
beautiful tree is a variety of Byrsonima crassifolia, 
H.B.K. [No. 130], with leaves the under surfaces of 
which are tinted with so deep and rich a violet as to 
impart a very striking violet shade to the whole tree, 
even when it is seen from a distance. Under the shade 
of these, and the host of other trees, ground, shrubs and 
tree trunk alike are swathed in thick green mosses, 
