406 Key to the System of 



Paired calyx-lobes partially or much connate. 



Leaf from far above the base of the stem, sometimes rather 

 short ; spike with several or many flowers ; calyx-lobes 

 and paired petals greenish, pointed, somewhat dark- 

 streaked ; labellum sessile, concave at the base, its mem- 

 branous portion whitish and crisped ; fruit hardly turgid. 



F. australe. 



1763. Labellum wit.hout any ciliolation ... ... 1764 



Labellum with a conspicuous ciliolation ... ... 1766 



1764. Labellum gradually much pointed. 



Very slender, leaf undeveloped or proceeding separately 

 from the flowering stem ; spike very short, with a folia- 

 ceous bract or rudimentary leaf near below it ; flowers 

 very small, dark-reddish ; paired calyx-lobes disjointed ; 

 labellum almost straight, reddish, slightly denticulated ; 

 as well as the other petals narrow-lanceolar ; fruit some- 

 what oblique-turgid. P. despectans. 



Labellum hardly pointed or blunt ... ... ... 1765> 



1765. Paired calyx-lobes bulging at the base. 



Very slender ; leaf undeveloped or proceeding separately from 

 the flowering stem or developed at a different time ; spike 

 very short, .with a foliaceous bract or rather rudimentary 

 leaf near it below ; flowers very small, dark-purplish and 

 somewhat greenish ; paired calyx-lobes disjointed ; paired 

 petals deltoid -lanceolar ; labellum lanceolar-ovate, ex- 

 tremely short ; fruit somewhat turgid. P. nigricans. 



Paired calyx-lobes almost flat at the base. 



Quite slender ; leaf proceeding separately from the flowering 

 stem, but often simultaneously ; spike very short, with a 

 rudimentary leaf or foliaceous. bract near it ; flowers 

 minute, closely approximated, reddish ; paired calyx-lobes 

 disjointed^ as well as the paired petals and labellum 

 almost lanceolar ; fruit oblique-ellipsoid. P. rufum. 



1766. Length of the labellum hardly double that of its 



breadth. 



Very slender ; leaf undeveloped or proceeding separately 

 from the flowering stem ; spike very short, rather distant 

 from the rudimentary stem-leaf ; flowers quite small, 

 yellowish and reddish ; paired calyx-lobes disjointed, 

 much longer than the paired petals ; labellum extremely 

 short, almost ovate, its ciliolation very minute ; fruit 

 oblique-ellipsoid. P. iiitricatum. 



