basi steriles longe productae. Staminodia minuta calcariformia ad separa- 

 tiorem labelli et staminis interdum adsunt. 



H. scyphifera K, SCH. Banca, Sumatra. (Malacca). 



H. Pininga (BL.) VAL. Java, Sumatra. 



H. reticosa VAL. n. sp. Sumatra. 



H. paludosa (BL.) VAL. Java. 



H. villosa (T. et B.) VAL. Java, Borneo, Sumatra. 



Huic sectioni referenda, mihi non visa: H. reticulata {=H. H avilandii) 

 K. Schumann 1. c. 193, Borneo, Beccari No. 32 et 1148, Haviland 

 sine no., pining inc. 



II. Subgenus Elettariostemon ( = Elettaria BL.) Rhizomata vulgo 

 subterranea. Inflorescentiae subsessiles vel scapis longis erectis. Indumen- 

 tum bractearum e pilis compositis floccosis tomentosum, raro nullum vel 

 subnullum. Bracteae florales totae involucro inclusae. Bracteola membranacea; 

 bracteis infimis conformis, in H, elongata deficiens. Calyx spathaceo-fissus 

 cor. tubum aequans in alasbastro adulto acuminatus clausus petala superans. 

 Petala haud rigida nonnunquam circa antheram conniventes. Labellum 

 calceolare auriculis erectis haud inflexîs. Antherae connectivum haud in 

 laminam brevem planam productum; thecae basi nudae. Staminodia cal- 

 cariformia ad basin labelli nuîla. 



H. elongata (T. et B ) K. SCH. Sumatra. 



H. mollis (BL.) VAL. Java. 



H. Rumphii (SMITH) VAL. Molucca's, Borneo. 



H. minor (BL.) VAL. (affinis H. ophiuchus RlDL.) Java, cult., Borneo. 

 H. lycostoma K. SCH. New-Guinea, Melanesia. 



H. alliacea (T. et B.) VAL. (comp. H. conica RlDL.) Java, Sumatra, 

 (Malacca, Philippines?) 



//. deliana VAL. n. sp. Sumatra. 

 H. cyathifera VAL. New-Guinea. 



Huic sectioni referenda, mihi non visa H. affinis RlDL. (189Q) 143, 

 Borneo, HAVILAND 1764. 



III. Subgenus Rosianthus. Rhizomata radicibus aereis elevata. Bracteae 

 florales apice projectae, recurvae et cymbiformi-incurvae coronam rosifor- 

 mem dilatatam sistentes. Labellum abbreviatum. Connectivum antherae 

 rigidum breviter productum truncatum. Thecae basi nudae. 



H. rubra (Bl.) Val. (species monotypica), Java, Sumatra. (Borneo?). 



IV. Species male cognitae. 



H. sarawacensis K. SCH. 1. c. 191. Borneo, BECCARI 1435; H. phae- 

 ochoana K. Sch. Borneo BECCARI No. 615. 



Key to the determination. 



I. Inflorescences fusiform or more or less cylindrical or cyathiform. Floral 

 bracts and flower tube wholly included within rigid involucral bracts. 

 A. Connective rigid linear prolongate into a short rotundate flat crest, lip 

 stiff (loriform) auricles reflexed on the back of the anther, thecae 

 spurred at the base. 



