590 Transactions. 
up the flats where the latter are absent, the three species occur abundantly 
and together as low epiphytes wherever the thicket is tall and close. 
Even T. reniforme, and sometimes also H. dilatatum and H. scabrum, 
may occur here, though somewhat scantily, whenever a greater variety of 
and the moss and epiphytes on the shrubs are at these times liable to 
be shrivelled for several days together. It is noticeable that H. villosum 
can recover from such shrivelling to a more marked degree than either 
H. sanguinolentum or the ordinary mesophytic form of H. multifidum. 
(d.) H. flabellatum, H. rarum, H. rufescens, and T. Lyallii. (Plates 65, 
56, 72, 76.) 
Т. Lyallii also prefers the mountain-flanks, although it descends occasionally 
to sea-level; but the other two species are more wide-ranging. They all 
agree in the slender capillary nature of the stem and rhizome. The two 
larger-growing species, H. flabellatum and H. rarum, are characteristically 
pendulous in habit. 
H . flabellatum and H. rarum are abundant throughout the lowlands 
as middle epiphytes on large-stemmed trees, where they adopt the 
overhanging station. Here they frequently grow most luxuriantly, the 
silky and of a simple form, thickly clothing the stipe and rhachis 
e Th 
more pronounced high epiphyte than H. flabellatum, it is found that on 
the mountain-sides the former invariably occupies a slightly higher position 
