1 76 TlMEHRI. 
There too, but half clinging to the tree-trunks, are 
various species of Psammisia [Nos. 56 and 49], woody 
stemmed creepers, the innumerable drop-like crimson 
flowers of which, as they catch the tiny gleams of light 
striking down between the thick leaves of the forest 
roof, glow with intense colour. In these shady, moss- 
covered, quiet places, too, stand ere6t many tree ferns 
[Nos. 92, 270, 87, 37] and a very beautiful new aroid 
{Anthurium roraimense, N. E. Brown, TV. sp. [No. 
264]), its huge heart-shaped leaves and large arum- 
like flowers, of purest white, carried high on a slender 
but stiff stem. There, too, are innumerable ferns of 
wonderful interest, and many, but not showy orchids. 
Especially of the latter family many of those tiniest and 
most delicate species which if seen under a powerful 
magnifying glass, would rival the most showy, the most 
graceful of their kindred of our hot-houses. 
We must pass now to the forest slope, which, as has 
been told, consists of three fairly distinct belts or zones, 
which I have called respectively, beginning from the 
lowest, the jungle belt, the bush belt and the belt of 
rock and tree. 
The jungle is most densely interwoven of many tall 
shrubs or dwarf trees, which are yet more closely knit 
together by vast quantities of a climbing straggling 
bamboo [Guadua [No. 359]), of a Cyperaceous plant, 
Cvyptangium stellatum, Boeckler [No. 357],) with 
rough, knife-edged leaves and tall weak stems ; which 
support themselves on, and at the same timedensely clothe, 
the shrubs among which the plant grows,* and of 
* This is Schomburgk's Leiothamnus Elizabethan. 
