Perularia 



ORCHIDACEAE 



Habenaria 



China; locally in An., Che., Hup., Ki., Ku. Moist grassland or moist and shady 



places. Fig. 501. 

 2. Perularia whangshanensis Chien (Sc.C.6:75). Plant erect, 23-32 cm. high; leaves 

 2 or 3; flowers green, loose, 10 to 14. China; locally in An. Open moorland. 



4. Habenaria Willd. Rein Orchis $§^SEftB (E Mao Yii Feng 



Hua Shu; Flat-petaled- white-balsam Genus) 



A very large, cosmopolitan and polymorphic genus of terrestrials characterized 



by leafy stems (in our region), a terminal inflorescence and flowers bearing a spur 



at the base, the pollinia being naked and not enclosed at base in a sac or bursicle; 



the lip is either simple or more or less deeply 3-lobed or 3-parted. 



About 600 species; 80 in China. (Latin: habena, a thong or rein, referring to 

 the shape of the spur in some species.) Coeloglossum Hartm.; Gymnadenia R. Br.; 

 Platanthera L.C. Rich. 



Key to the Species 

 a. Spur at base of lip abbreviated, scrotiform 



aa. Spur at base of lip elongate. 



b. Lip simple, at most dilated below. 



c. Leaves linear-lanceolate; lip not dilated near the base 2. 



cc. Leaves oval to oblong or ovate (rarely oblanceolate). 



d. Spur 5.-5.5 cm. long 3. 



dd. Spur 2.9 cm. or less long. 



e. Spike relatively short, 5-7 cm. long, loosely 5-to 



10-flowered; spur 2.4-2.9 cm. long 4. 



ee. Spike elongate, usually 9-30 cm. long, many- 

 flowered; spur 1.8 cm. or less long, 

 f. Lower floral bracts much surpassing the 

 floweis; spur slender-cylindric, 1.35cm. 



or less long 5. 



ff. Lower floral bracts subequalling the flowers; 



spur filiform, 1.4-1.8 cm. long 6. 



bb. Lip 3-lobed or 3-divided. 



g. Leaves lineal or linear-oblong, with essentially parallel 

 sides, 

 h. Lip cuneate below, subequally 3-lobed above the middle 



with short rounded to quadrate lateral lobes 7. 



hh. Lip with a short linear base, then divided into very 

 narrow lobes of which the lateral ones are more 



or less laciniate near the tip 8. 



gg. Leaves ovate or elliptic to oblong-elliptic or lanceolate, 

 without parallel sides. 



i. Flowers relatively large (lateral sepals 9 mm. or 

 more long); lateral lobes of lip much larger 

 than the narrow mid-lobe; spur of lip much 



exceeding the ovary 9. 



ii. Flowers very small (lateral sepals 4 mm. or less 

 long); lateral lobes of the lip narrower than 

 the mid-lobe; spur of lip shorter than the ovary 10. 



H. viridis 



var. bracteata 



H. neuropeiala 

 H. japonica 



H. winkleriana 



H. minor 

 H. lienryi 



H. conopsea 

 H. linearifolia 



H. miersiana 



H. stenostachya 



1. Habenaria viridis (L.) R. Br. var. bracteata (Muhl. ex Willd.) A. Gray 



534 



