C. acaule.—A large-flowered, distinct species, with a pair 
of broad, ovate leaves 4in. long, folded at the base, and 
pubescent. Scape erect, 6in. to gin. high, leafless, with a 
green bract at the top, one-flowered. Sepals and petals 
narrow, I4in. long, slightly twisted, whitish; pouch ovate, 
nearly 2in. long, irregularly slit from the base to the apex; 
colour deep rose, with darker reticulating lines. This 
species should be grown in peat, or peat and leaf-mould, 
in a shady position. It thrives under Rhododendrons if 
kept well watered in dry weather. It also thrives when 
grown in pots, and is useful for forcing. A native of 
North America, where it grows in woods. 
Bigve- shige 1. 
C. arietinum.—The smallest-flowered of the hardy kinds. 
Its stem is about 6in. high, and bears four leaves, which are 
lanceolate and nearly smooth. Flower-segments 3$in. long, 
reddish, with white veins; pouch as long as the segments, 
and of the same colour. The pouch is conical and deflexed 
at the apex, a character to which the popular name of 
Ram’s-head Orchis is due. This species inhabits swamps 
and damp woods in North America. It thrives here in 
bog-peat, or in good sandy leaf-mould, and flowers in June. 
Introduced in 1808. 
Botanical Magazine, t. 1569. 
C. Calceolus.—This is interesting as being the largest- 
flowered amongst British Orchids; it is also an ornamental 
and useful garden plant. Stems rft. to 14ft. high, with 
about four large, ovate, pointed leaves, and one or two 
flowers. The latter have dark brown, wavy sepals and 
petals, r4in. long, the dorsal sepal the broadest; pouch 
tin. long, clear yellow, the end rounded and curved 
upwards. This species blossoms in May or June. It 
should be planted 6in. deep, in good, light, fibrous loam, 
