degrees in midsummer. Cool bushhouse treatment will suit this species admir- 
ably from Sydney northwards. Water moderately during the Summer and 
Autumn, but barely dampen the compost during the Winter and early Spring. 
CYPRIPEDIUM CALLOSUM. Native of Siam and Cochin China. 
A very attractive species of the first group. Leaves up to 8 or 9 inches long, and 
14 to 2 inches broad, bright green, beautifully tessellated with dark green. Scape 
about 15 inches tall, proceeding from centre of growth—usually one flower— 
sometimes two. Blooms are large, dorsal sepal up to 3 inches across, somewhat 
heart-shaped, white with alternate streaks of long and short veins, green at base, 
becoming purple as they approach the apex. Petals inclined to bend downwards, 
pale green in colour, tinted with pale purple towards the tips. The edges are 
hairy, with a few warts on the upper side. Pouch dark brownish-purple, shading 
to green. The species is found in the low-lying country on the western borders 
of Siam and the eastern borders of Cambodia. The climate is what is known 
as a tropical rainy climate—with a temperature that seldom falls below 64 degrees. 
Rainfall is heavy throughout the year, but is considerably less in the Winter time, 
although the climate is never arid. The species, therefore, requires warm treatment, 
and in Sydney and the colder parts of Queensland needs heat in the Winter time. 
In the warm parts of Brisbane a glasshouse will serve, providing the minimum 
temperature does not fall below, say, 60 degrees. Give the plant ample water 
throughout Spring, Summer, and Autumn, and do not allow it to dry out even 
in Winter. 
Variety Sanderae is greenish yellow and white throughout. 
CYPRIPEDIUM CHAMBERLAINIANUM. Native of New Guinea. 
A rarely-met-with member of the second group, mentioned here because, being a 
native of New Guinea, there is always a possibility that one of my readers may be 
so fortunate as to obtain possession of a plant of it. It is found (though rarely) 
in the little known country between the Victor Emanuel and Muller Ranges, near 
the boundaries of New Guinea and Papua. It is a particularly robust growing 
plant—the leathery, strap-shaped leaves, which are a bright green, attaining a 
length of 18 inches to two feet. The flower scapes are long and stout, and 
are reported to bear more than twenty flowers on each scape, each flower being 
backed by a large boat-shaped bract. Dorsal petal cream, marked with thin 
red lines on each side of the mid-rib, the base being richly spotted with purple. 
The sepals are very pubescent at the back. Petals are long, very twisted, with a 
crinkled edge—cream in colour, with crimson spots, the margin having a fringe 
of white hairs. The pouch is large and white, densely spotted with rose-coloured 
spots at the bottom. 
Glasshouse treatment is necessary in Sydney and the cooler parts of Brisbane, but 
in the warmer parts a fairly warm bushhouse will be sufficient. Give ample water 
throughout the Summer, but no more than is necessary to keep the compost 
slightly damp during the Winter months. 
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