104 



CXXXIII. ORCHIDILE (roLFE). 



[PolystcLchya. 



Leaves 2-3 lin. broad ; inflorescence 

 few-flowered .... 

 Chin of the flowers not or very slightly 

 exceeding the dorsal sepal. 

 Lip sessile, with small basal side lobes. 

 Leaves linear-lanceolate j inflores- 

 cence simple or slightly branched 

 Leaves lanceolate; inflorescence dense, 

 with several branches. 

 Side lobes of lip triangular, acnte 

 Side lobes of lip ovate-oblong, sub- 

 obtuse .... 

 Lip more or less ungiiiculate ; side lobes, 

 when present, not basal. 

 *Inflorescence paniculate, except in 12 

 and 13; bracts acute from a 

 broad base; flowers 3-6 lin. 

 long (plants turning black in 

 drying). 

 Leaves solitary. 

 Leaves oblong 



Leaves linear (Eastern species) 

 Leaves very narrow, \ lin. 

 broad. (Western species) 

 Leaves two or more. 



Flowers about 5-6 lin. long (see 

 also 19). 

 Inflorescence a lax, many- 

 flowered, panicle. 

 Lip unguiculate, trilobed . 

 Lip rhomboid, obtuse- 

 angled 

 Inflorescence about 4-flowered 

 Flowers under 4 lin. long. 

 Inflorescence simple 

 Inflorescence branched. 

 Leaves 2-2^ lin. long 

 Leaves 3-5 in. long. 



Side lobes of lip rounded 

 Side lobes of lip angular, 

 truncate in front . 

 **lnflorescence paniculate except some- 

 times in 17 and 30 ; bracts 

 acute or acuminate from a broad 



3. P. hifida. 



4. P. ensifolia. 



5. P. pyramidalis. 



6. P. rhodaptera. 



7. P. cnUraia. 



8. P. gracilenta. 



9. P. tenuissima. 



10. P. laxiflora, 



11. P. dendrobiiflora. 



12. P. albescens. 



13. P. nigrescens. 



14. P. Eendlei. 



15. P. Krcenzlinii. 



16. P. imbricata. 



except in 17 (plants not turn- 

 ing black in drying). 

 Flowers 6 lin. long 

 Flowers 1-4 lin. long. 



Chin more or less obtusely 

 conical. 

 fLeaves more or less expanded 

 and flat. 

 Lip entire 

 Lip trilobed. 



17. P. Rivce. 



18. P. paniculata. 



