Victorian Plants. 405 



CB.VPTOSTVZ.ZS. 



1758. Labellum soon reflexed along the margin. 



Rather tall ; leaves elongate- or elliptical-lanceolar, varying 

 occasionally to roundish-ovate, but always acute ; empty 

 bracts usually two or three ; flowers from three to twelve, 

 their stalklets very short ; floral bracts conspicuous ; 

 calyx -lobes and paired petals greenish ; labial petal 

 large, from a slightly bilobed base somewhat elliptical, 

 mostly dull-purplish ; its small double protuberance infra- 

 terminal ; gynostemium extremely short ; fruit rather 

 slender. C. longifolia. 



PRASOPHVXiXiUBX. 



1759. Usually robust and tall ... ... .. ... 1760 



Usually slender and dwarf ... ... ... 1763 



1760. Labellum almost straight, its membranous portion 



narrow and but slightly surpassing the callous 

 portion ... ... ... ... 1761 



Labellum quite bent back from the middle, its mem- 

 branous portion broad and far surpassing the callous 

 portion ... ... ... ... ... :.. 1762 



1761. Paired calyx-lobes partially or much connate. 



Often remarkably tall and robust ; leaf from far above the 

 base of the stem, occasionally abbreviated or almost 

 deficient; spike many-flowered, sometimes very long; 

 flowers comparatively large, dark-colored or yellowish- 

 greenish ; paired petals broadish-lanceolar, labellum 

 'sessile, its membranous margin paler, slightly crisped ; 

 fruit hardly turgid. P. elatum. 



Paired calyx-lobes quite disconnected. 



Often less tall and robust ; leaf from far above the base of 

 the stem; spike with several or many flowers; flowers 

 dark-colored or greenish ; paired petals linear-lanceolar ; 

 labellum sessile, its membranous margin paler, flat ; 

 fruit somewhat oblique-turgid. P. fuscum. 



1762. Paired calyx-lobes quite disconnected. 



Leaf from far above the base of the stem; spike with 

 several or many flowers ; calyx-lobes greenish or slightly 

 yellowish ; paired petals rather narrow, nearly blunt, 

 pale ; labellum sessile, its membranous portion whitish 

 and crisped ; fruit somewhat oblique-turgid. 



P. patens. 



