Cypripedium ORCHIDACEAE Perularia 



1. Cypripedium Linn. Lady's slipper ^/jg-LM (Lao Hu 

 Ch'i Shu; Tiger-root-tonic Genus) 



Erect terrestrials, in our species with creeping rhizomes; stem stout, sheathed at 

 base, bearing leaves which are subopposite (in this region), very broad and plicate- 

 veined: flowering peduncle naked, 1-flowered; flower large, leafy-bracted; sepals 

 broad; petals narrower, flat or somewhat twisted; lip large, pouch-shaped or slipper- 

 shaped, white, veined with purple. 



A rather large genus of cosmopolitan distribution in temperate regions, with 

 about 50 species; 27 in China. (Greek: Cypris, Venus, and pedilon, shoe.) Cripripedilum 

 Aschers. 



1. Cypripedium cathayanum Chien* (Sc.C.6:23) Plant 37-42 cm. high; leaves 2, 

 subopposite, near the middle of the stem, suborbicular to transversely oval, up to 

 15cm. long and 16.5 cm. broad; flower large, solitary, light yellow, with a white, 

 purple-veined, shoe-shaped lip. China; locally in Che. Fig. 499. 



*Recorded by Chien as Cypripedilum cathayemim 



2. Amitostigma Schltr. f*^SMM (Chia Yii Tieh 



Lan Shu; False Gymnadenia) 



Slender terrestrials, with 1 or more globose-ovoid or elliptic tuberoids; leaves 

 solitary in our species, near the base of the stem, broadly oblong or elliptic-oblong; 

 peduncle filiform; raceme few- to many-flowered; flowers small with free but some- 

 what connivent segments; lip protruding, 3-lobed, produced at the base into a slender, 

 short, spur; column abbreviated, with stigma having 2 filiform arms adnate to the 

 base of the lip. 



A small genus of about 18 species, confined to China, Formosa and Japan; 14 in 

 China. (Name derived from Greek words referring to the thread-like arms of the 

 stigma.) Mitostigma Bl. 



1. Amitostigma chinensis (Rolfe) Schltr. (Cynosorchis chinensis Rolf e) (JLSB38:369). 

 Slender tuberous herb, 4.5-24.5 cm. high. China; locally in An., Ki. Moist shady 

 banks or cliffs. Fig. 500. 



3. Perularia Lindl. YsMMM (Chu Yeh Lan Shu; 



Bamboo-leaf-orchid Genus) 



Small group of terrestrials, bearing several or (in our species) commonly 2 or 3 

 leaves near the middle of the stem and terminal inflorescences; flowers small, green; 

 lip with obscure or abbreviated lateral lobes at the base, and a slender spur surpassing 

 the lip; pollinia with the base enclosed in a sac or bursicle. 4 species in China. 



Key to the Species 



Leaves dissimilar, the lower oblanceolate-oblong and the upper 

 narrowly elliptic-lanceolate; spike rather densely 20- to 25- 

 flowered ; spur up to 6 mm. long 1 . P- ussuriensis 



Leaves similar, the lower elliptic-oblong and the upper oblong to 



linear; spike loosely 10-to 14-flowered; spur about 16mm. long 2. P. tvhangshanensis 



1. Perularia ussuriensis (Maxim.) Schltr. {Platanthera ussuriensis Maxim.) %kjjifcML% 



;j (Wu Su Li Chu Yeh Lan; Ussuri Perularia) (Sc.C.6:87). Plant erect, 30-47 



cm. high; leaves 2; flowers greenish, rather dense, numerous. Japan, Korea, 



532 



