NOMENCLATORIAL CHANGES IN 

 DENDROCHILUM 



PSEUD ACORIDIUM A7?ies gen. nov. 



Sepala libera similia, glabra, patentia, subaequalia, saccum la- 

 belli amplectentia, oblique ascendentia. Petala sepalis similia, pa- 

 tentia. Labellum saccatum, bilobatum, ad basim columnae ses- 

 sile, utrinque callosum, lobis erectis columnae parallelis, cucul- 

 lum formantibus. Saccus scrotiformis, intus per medium leviter 

 carinatus. Columna gracilis, oblique erecta, semiteres, exalata, 

 apicem versus sensim paulo dilatata, clinandrio prominenti mar- 

 ginibus integro, canaliculato. Anthera intra clinandrium oper- 

 cularis, incumbens, bilocularis. Pollinia quatuor, cerea, pyrifor- 

 mia, per paria in loculis segregata. Ovarium pedicellatum, cla- 

 vatum. Herba epiphytica, erecta, radicibus flexuosis, carnosulis. 

 Pseudobulbi parvi, monophylli, vaginis nonnuUis scariosis ob- 

 tecti. Folium coriaceum, breviter petiolatum. Scapus lateralis 

 racemo terminali, erectus quam folium longior; floribus distichis 

 in racemo denso dispositis. Bracteae inflorescentiae glumaceae, 

 rigidae, ovarium excedentes. Species singula adhuc nota silva- 

 rum Mindoro indigena. 



Pseudacoridium Woodianum Ames comb. nov. Dendro- 

 chilum Woodianum Ames Orch. 2 (1908) 80 cum ic. 



The bilobed labellum, its lobes erect and forming a hood over 

 the column, the deep scrotiform sac with a keel inside, and the 

 lateral scape arising from the base of a pseudobulb are charac- 

 ters that set this genus apart from Acoridium; from Dendrochi- 

 lum the exalate column, prominent clinandrium and saccate bi- 

 lobed labellum separate it clearly. 



[79] 



