420 Key to the System of 



Labellum gradually pointed ... ... 1809 



1809. Upper calyx-lobe extended into a short and but 



slightly incurved elongation. 



Never tall ; stem-leaves small, few, from linear- to narrow - 

 lanceolar, the largest towards the flower ; bracts in size 

 and shape quite leaf-like ; lower calyx-lobes from above 

 their junction separated by a rather wide sinus, hardly 

 surpassing the upper ; labellum pointed ; upper angle of 

 the gynostemium-appendages acute, lower obtuse ; fruit 

 rather turgid. Probably to be united with the following. 



(P. alata.) P. praecox. 



Upper calyx-lobe extended into a long arched- 

 incurved elongation. 



Never tall ; stem-leaves small, few, from linear- to narrow- 

 lanceolar, the largest towards the flower ; bract in size and 

 shape quite leaf-like ; flower often large, sometimes an- 

 teriorely slightly reddish ; lower calyx-lobes from above 

 their junction separated by a rather narrow sinus, much 

 surpassing the upper ; labellum upwards gradually much 

 narrowed, at the base provided with a brush-like appen- 

 dage; upper angle of the gynostemium-appendages 

 pointed, lower blunt and ciliolated ; fruit rather slender. 



F. reflexa. 



1810. Labellum excised at the summit. 



Dwarf and slender ; basal leaves rather small, nearly 

 ovate or somewhat rhomboid ; stem-leaf one only, bract- 

 like ; flowers comparatively small ;. bract near the calyx- 

 tube ; upper calyx-lobe simply acute, sui-passed by the 

 almost setular ends of the lower lobes ; labellum several 

 times longer than broad, glabrous, its basal appendage 

 brush-like ; upper angle of the gynostemium-appendages 

 much pointed ; fruit somewhat turgid. P. conciiina. 



Labellum entire also at the summit ... 1811 



1811. Flower quite small 1812 



Flower large or of moderate size ... ... ... 1813 



1812. Labellum cordate-ovate. 



Dwarf, very slender ; leaves quite small, from rhomboidal- 

 to lanceolar-ovate, all basal or one at some distance from 

 the stem-base and often conformous ; all three calyx -lobes 



