408 Key to the System of 



1771. Lower leaf narrow ... 1772 



Lower leaf broadish ... ... ... ... ... 1773 



1772. Bearded appendages reaching only the height of the 



hood-like entire or slightly bilobed middle summit 

 of the gynostemium. 



Hardly or somewhat tall ; lower leaf from broadish- to 

 narrow-linear, channelled ; upper leaves much abbreviated ; 

 calyx -lobes and petals dotless ; smooth portions of the 

 appendages of the gynostemium shorter than the tuft of 

 hairlets ; fruit almost narrow-ellipsoid. T. longifolia. 



Bearded appendages reaching much beyond the sharply 

 denticulated middle summit of the gynostemium. 



Hardly or seldom tall, often rather slender ; lower leaf 

 channelled-linear ; upper leaves diminutive ; calyx-lobes 

 and petals somewhat dotted inside ; smooth portions of 

 the appendages of the gynostemium longer than the tuft 

 of hairlets ; denticulation between them irregular ; fruit 

 almost ellipsoid. T. ixioides. 



1773. Calyx-lobes inside and petals bluish. 



Quite tall, comparatively robust ; .longitudinal venules of 

 leaf thick and beneath prominent ; upper leaves two or 

 three, rather conspicuous, though very much shortened ; 

 flowers many in the raceme ; gynostemium nearly twice ' 

 as long as broad, its terminal crest bright-yellow ; the . 

 narrow glabrous portion of the two appendages about as 

 long as the tuft of hairlets ; no lobes between the crested 

 summit and the lateral . appendages ; anther minutely 

 apiculate ; fruit almost ellipsoid. T. aristata. 



Calyx-lobes inside and petals almost greyish. 



Quite tall, comparatively robust ; longitudinal venules of 

 leaf thick and beneath prominent ; upper leaves two or 

 three, conspicuous, though much shortened ; flowers many 

 in the raceme, opening tardily ; petals inside somewhat 

 bluish ; gynostemium hardly longer than broad, the 

 narrow glabrous portion of the two appendages much 

 shorter than the tuft of hairlets ; terminal crest of the 

 gynostemium pale-yellowish, two semilanceolar connivent 

 lobes between the crested summit and the appendages; 

 anther conspicuously pointed ; fruit almost ellipsoid. 



T. epipactoides. 



