61 
QUEENSLAND. — Cook District : Portland Roads, Arnold 
Johnson (flowered in the author's glasshouse, 31st January, 1950), 
(TYPE plant growing in the author's collection.) 
Rhizome shortly creeping. Pseudo-bulbs e. 30 cm. 
long, very slender, terete, drooping, slightly zig-zagged, 
light green, carrying the scarious remains of the sheath- 
ing scales. Leaves lanceolate, the longest measuring 5 
cm. x 1.3 cm., thick in texture, somewhat keeled, light 
shining green, deciduous. Flowers in ones and two from 
the nodes of the previous season's growth, fugacious, not 
widely expanding on the specimen examined, dull white. 
Sepals linear-lanceolate, acuminate, c. 15 nun. long. 
Petals as long as the sepals, linear, acuminate. Labellum 
c. 15 mm. long, very obscurely 3-lobed, lamina almost 
oblong, c. 12 mm. x 8 mm., not expanding, transparent 
white with a net-work of fine red veins, surface and mar- 
gins sparsely ciliate, base long and very slender. Column 
short, stout, with a slight depression on each side at the 
hack, green; column foot long, narrow, channelled. Anther 
cream. Stigma large, prominent, circular. 
Only two flowers have been produced and these 
were used in making the determination. It is hoped that 
the plant will produce further herbarium material dur- 
ing the summer and this will enable a plate to be made. 
This species seems to lie closely related to an exten- 
sive group of showy Indian and Burmese species of 
Dendrobium, including D. superlnun, !>. parisMi, I), pier- 
ardii and others well-known in cultivation. It is very 
dissimilar in habit from the Australian species of Den- 
drobiim. It shows its affinity with the Indian section 
by its habit of producing long, terete, drooping pseudo- 
bulbs which carry leaves, one at each node, only until 
the rapidly made growth has matured and “ripened.” 
The leaves then wither and sited their blades, leaving 
only their decaying, sheathing bases. After a prolonged 
resting period flowers are produced in ones and twos at 
the nodes and the next growth develops. A further af- 
finity is suggested by the shape of the labellum which is 
very obscurely lobed, if lobed at all, and the lamina, 
which is hardly expanded but remains furled. 
The species has been named in memory of the late 
Mr. C. T. White, botanist and lover of orchids “guide, 
philosopher, and fi’iend” to so many. 
