@4 E. Pfitzer. — r Orchidaceae-Pleonandrae. 



quadrato-trapeziforme antice latius obtusum emarginatum margine deflexo longo piloso; 

 stigma ovatum obtusum; germen stipitatum glabrum fusiforme rostratum. — Sepala alba 

 purpureo-striata, potala luteo-ochracca brunneo-maculata, labelli unguis albus calceus sub- 

 tus et margine luteus, cactorum purpurascens venis purpureis reticularis. Diam flor. 

 perp. 16 cm, horiz. 12 cm. Sepalum 6 cm longum. Folia ad 30 cm longa. 



Sarawak (Borneo); 1862 von H. Low eingeführt — v. fl. s. 



Var. acrosepalum Reichb. f. ex Williams, Man. 7. ed. 303, Pucci, Cyprip. 193. — 

 Sepala lateralia. non connata, libera, sepalum dorsale angustius quam in typo. 



Var. platytaenium Reichb. f. in Gard. Chron. (1867) 118c xylogr.; (1890) I. 548 

 fig. 86; Xcnia Orchid. II. 158 t. 161; Warn. Sei. Orch. II. t. 14; Flor. Mag. N. Ser. 

 t. 414; Journ. of Hortic. XVIII. 89 f. 15; Veitch, Man. IV. 4 8; Williams, 1. c. 303; 

 Krzl. Orch. I. (1897) 44, — Flores majores, petalis multo latioribus albis luteo- et 

 purpureo-maculatis apice carmineis. 



Var. album, candidum, Cannaertianum , dilectum, Hackbridgeanum, 

 Hyeanum, macranthum , pallens , roseum, superbum, cf. Pucci, Cyprip. 194 

 Desbois, Cyprip. 436. 



Subgenus III. Otopedilum Pfitz. 



A. Staminodium obcordatum forcipatum dorso umbone basali 

 acuto piloso auctum. Folia loriformia concoloria suberecta 

 viridia. Scapus pluriflorus, floribus simultaneis. 



a. Petala angusta dependentia pluries torta margine inferiore 

 verrucis pilosis ornata apice minute spathulata. Folia 



angustissime hyalino-marginata Sectio V. Mystropetalum Pfitz. 



b. Petala ex basi anguste lineari apicem versus valde dilatata 

 divaricata subtorta margine non verrucosa. Folia an- 

 gustissime lutco-marginata Sectio VI. Pardalopetalum Hallier. 



B. Staminodium leviter fornicatum dorso subumbonatum inte- 

 grum. Folia latc loriformia recurva concoloria viridia vel 

 glauca. Scapus pluriflorus, bracteis emarginatis, floribus 



succedaneis Sectio VII. Cochlopetalum Hallier. 



C. Staminodium suborbiculare , quadratum, cordatum vel ob- 

 cordatum. Sepalum inter nervös simplices curvatos nervig 

 tenuibus reticulatum. Folia viridia concoloria, scapus uni- 

 florus, rarissime biflorus. 



a. Staminodium subquadratum dorso umbonibus 3 humilibus 

 rotundatis parum prominentibus auctum, petala spathulata 



Sectio VIII. Stietopetalum Hallier. 



b. Staminodium obcordatum rctusum dorso convexo vel piano 

 umbone uno magno centrali auctum, petala apicem versus 



plus minus dilatata Sectio IX. Neuropetalum Hallier. 



c. Staminodium cordatum dorso sulcato leviter umbonatum, 



petala elliptica Sectio X. Thiopetalum Hallier. 



d. Staminodium suborbiculare postice fissum lobis revolutis, 



petala oblonga margine undulata .... Sectio XI. Cymatopetalum Hallier. 



D. Staminodium lunatum antice aequaliter tricuspidatum, sepa- 

 lum nervis curvatis simplicibus apicem versus reticulatim 

 conjunctis, petala valde sigmoidea deflexa apicibus erectis. 



Folia viridia concoloria, scapus uniflorus . . . Sectio XII. Ceratopetalum Hallier. 



E. Staminodium lunatum, hippocrepidimorphum vel subrhombeum 

 interdum umbonatum. Sepalum retinerve vel simplicinerve, 

 petala apicem versus manifeste dilatata. Folia plus minus 



tessellata, scapus uniflorus Sectio XIII. Spathopetalum Pfitz. 



