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petals, sometimes very sinal!, sometimes resembling the petals, in G. p//ca/a 

 very large obovate. 



Kaempferia: Staminodes always large elliptic or oblong or obovate- 

 oblong patent, similar to the labellum. 

 ' Labellum : 



Gastrochilus : Labellum mostly entire, mostly oblong, much longer than 

 the petals and staminodes, concave saccate or subsaccate or channeled 

 at the lower part, the foremost portion patent or deflexed; in an other 

 type widely obcuneate and emarginate at the top (G. anomalum, G. cochin- 

 chinense), rarely bifid with large lobes (G. bilobam, Ridl; G. siibbilobum, Burkill). 



Kaempferia. Labellum not longer than wide, bifid to the middle, lobes 

 forming a cross with the staminodes. 



Stamen : 



Gastrochilus: filament rarely short (G. grandifolium) often as long 

 as the anther, free, anther exserted from the /anx, facing the lip ; connective 

 blunt (Eugastrochilus) or more or less crested; crest never larger and 

 wider than the anther. 



Kaempferia. Filament very short or wanting {K. galanga et pulchra). rarely 

 elongate {K. fissa) inserted in the narrow upper part of the tube, anther hidden 

 within the corolla-mouth, only the crest enserted and half-closing the mouth, 

 crest as large or larger then the anther, petaloid, rarely small {K. Candida). 



Leaves : 



Gastrochilus Petiole often long, sheaths terminated by two distinct 

 often very much elongate auricles forming the ligula. 



Kaempferia: Petiole (portion between blade and sheath) mostly short, 

 ligula inconspicuous not or very obtusely auricled. 



If the genus Gastrochilus be understood in this sense a new descrip- 

 tion is wanted : 



Gastrochilus Wall, et Ridley; descriptio emendata. 



Flores inter bracteolas 2 membraneas, aequilongas, inferiore convoluta, 

 inclusi. Calyx membranaceous spathaceo-tubulosus bracîeolis brevior. Corol- 

 lae tubus bracteolis longior vel subbrevior (G. pulcherrima) tenuis apice 

 dilatatus, limbi petala conniventia, lanceolata, subaequalia, trinervia, dorsale, 

 vel omnia, interdum cucuUatum. Staminodia petaloidea, interdum parva, 

 lanceolata, antheras vix superantia, vulgo petalis breviora et latiora, (raro 

 permagna, petala superantia G. plicatum), Labellum magnum oblongum 

 basi saepe cuneatounguiculatum et canaliculatum, hirsutum, integrum vel 

 raro apice bifidum, petalis et staminodiis raulto longius, saepe sinuato- 

 crispum, deflexum, antice saepe leviter convexum, infra medium concavum, 

 interdum saccatum. Stamen mediocre. Filamentum breve, (brevissimum in 

 G. grandifolium) columnare vel elongatum et tum basi staminodiis adnatum. 

 Anthera connectivo adnata articulatione nulla, e fauce exserta, thecis paral- 



