November, igi2.] THE ORCHID WORLD. 
A vigorous Dendrobium, probably undulatum, photographed in New Guinea. 
DENDROBIUMS OF NEW GUINEA. 
NEW GUINEA IS the native home of 
many interesting and beautiful Den- 
drobmms, several of which are much 
appreciated by lovers of the genus. To 
ensure successful cultivation a house should 
be selected vv'hich will receive considerable 
sunshine and ample heat by artificial means. 
The plants require a large amount of water, 
almost throughout the year, only during the 
resting season should this and the tempera- 
ture be reduced. Good fibre and sphagnum 
moss in equal parts make a suitable compost, 
and the pans should, if possible, be suspended 
in the warmest and lightest part of the house. 
D. atro-violaceum is well-known as a late 
winter and early spring flowering species. 
The clavate pseudo-bulbs bear two or three 
stout leathery leaves at their apex, and the 
terminal flower spikes carry creamy-white 
flowers spotted with deep purple. The tiiree- 
lobed lip is rich violet-purple within and green 
without. 
VOL. III. 
4 
