112 
The Queensland Naturalist November, 1940 
common along every scrub creek in North Queensland. 
But these, in my opinion, were strays. The plant before 
you as specimen No. 1, a species of Eugenia, is the main 
host, and everywhere it grows there will be found 
Phalaenopsis. 
The Dendrobium beetle, Stethopachys formosa, was 
found attacking orchids in their native state, and a 
white scale (common in bush houses in Cairns) was also 
noticed on one or two plants. But generally speaking, 
they were remarkably clean. 
I trust that these notes, incomplete as they are, 
describing the conditions under which D. phalaenopsis 
grows naturally, will be of some interest and may possibly 
be of some assistance to those who cultivate this species. 
They grow here either in sunlight or shade, and do very 
well on tree fern slabs, providing dead fern tree is used, 
and then only the butt portion. 
Frangipanni and Custard Apple trees make good 
hosts, but outstanding of all is the Citrus. D. phalaen- 
opsis placed on citrus trees will outgrow and out flower 
plants grown by any other method; particularly if the 
citrus trees have been neglected and have a moss-covered 
(but not scale-covered) bark. 
