92 PRESENT-DAY GARDENING 
Cypripedium.—This is one of the largest, most useful, 
and most prolific genera, which, although commonly 
known in gardens as Cypripedium, may be divided into 
several distinct classes. Most of those generally known in 
gardens as Cypripediums have been termed Paphiopedilum, 
including C. barbatum, and C. Rothschildianum, and the 
green-leafed class, more commonly known in gardens as 
Selenipedium, are now termed Phragmopedilum. The name 
Cypripedium, however, has so firm a hold on cultivators 
that it is convenient to retain it in gardening handbooks. 
The Cypripediums have very numerous hybrids, and 
their numbers increase annually. An enumeration is there- 
fore impossible within the scope of this work. All require 
to be treated as terrestrial Orchids, a proportion of fibrous 
loam (see the chapter on potting terrestrial Orchids) being 
added in proportion to the strength of the subject, the 
largest proportion being given to the strongest growers. 
The Selenipedium, or green-leafed section, should be potted 
in fibrous loam, with a sprinkling of leaves and Sphagnum- 
moss. C, insigne, C. Spicerianum, C. Charlesworthit, and 
others of the class, also hybrids of them, may be grown 
in the cool house. C. Rothschildianum, C. Stonei, and the 
whole of that section require the highest temperature, but 
all may be grown successfully in an intermediate house. 
C. insigne Sandere is illustrated in Plate I. 
Cyrtopodium.—A strong-growing genus needing to be 
grown in the intermediate house. The plants should be 
potted as terrestrial Orchids. C. punctatum is the showiest 
and most easily grown species. 
Dendrobium.—One of the largest and most decorative 
genera of epiphytal Orchids, comprising several hundred 
