Orchidaceae (Volume 5); Illustrations and Studies of the Family Orchidaceae (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922. Excerpt: ... NOMENCLATORIAL CHANGES IN DENDROCHILUM PSEUDACORIDIUM Ames 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 nonnullis 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. Dendrochilum 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 characters that set this genus apart from Acoridium; from Dendrochilum the exalate column, prominent clinandrium and saccate bilobed labellum separate it clearly. ACORIDIUM Nee $ Meyen. From the abundance of material that has been examined in collections from the Philippine Islands it is clear that the section Acoridium of Dendrochilum should be elevated to generic rank. The exalate column, ...