AXD THEIR MANAGEMENT. 523 



British and other Hardy Orchids. 

 in a 6in. or an Sin. pot. The pots should be well drained. 

 The soil used for plants in pots should be speciall_\- good. 



Collecting. — The right season for collecting terrestrial 

 Orchids is after the flowers are o\er and the lea\-es ha\-e 

 begun to fade. The tubers should be kept in damp moss 

 until the}' can be planted. 



ARETHUSA. 



A. bulbosa (Z.). — A swamp-loving plant from North 

 America, and a pretty little Orchid for a fissure in a rockery. 

 Its one-leaved stem is about Sin. high, and it bears a large, 

 solitary, rosy-purple, scented flower, which develops in July. 



CALOPOGON. 



C. pulchellus {R. Br.) is from the same country, and thrives 

 under the same conditions, as the Arethusa. It is pretty in 

 flower, but difficult to establish here. It will be found described 

 in the body of the work. 



CYPRIPEDIUM. 



For generic description the reader is referred to the body of 

 the work (p. 142). 



C. acaule (Ait.). — This large-flowered, distinct species, has 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, liin. 

 long, slightly twisted, whitish ; pouch ovate, neady 2in. long, 

 irregulady slit from the base to the ape.\ ; colour deep rose, 

 with darker reticulating lines. This species should be grown m 

 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 Amenca, where it grows in woods. (Fig. 177.) 



C. arietinum (R. Br.).—Oi the hardy kinds, this is the 

 smallest-flowered. Its stem is about 6in. high, and bears four 

 leaves, which are lanceolate and neady smooth. Flower- 

 segments Vin. long, reddish, with white veins; pouch as long 

 as the segments, and of the same colour. The pouch is conical 

 and deflexed at the ape.x, a character to which the popular 



