76 BULLETIN JARD. BOT. BUITENZORG, SÉRIE III, VOL. V. LlVR. 1. 



faciens, supra basin recurvus, apice incurvus, linearis, carnosus, basi 

 subplanus cum sulco longitudinali et subverruculosus, marginibus in '/a 

 infra apicem confluentibus et costam altam apicem versus mox decrescentem 

 formantibus, basi albidus, apicem versus subcarneus, c. 0,3 cm. longus. 

 Ovarium pedicellatum subclavatum, apice dense basin versus laxius purpuree 

 stellato-tomentosum, c. 0.65 cm. longum. Capsula patentissima, subcylindrica, 

 flore sicco coronata, basi acuta, c. 0.75 — 0.8 cm. longa, valvis 3 linearibus 

 3 angustissime linearibus dehiscens, pedicello tenui, 0.2 cm. longo. 



Sumatra: Padangsche Bovenlanden, Agam, Soengei Djanih. (E. 

 JACOBSON, Fort de Kock, cuit, sub nrs. 998 and 999; also in Hort. Bog). 

 Without locality (W. GROENEVELDT, Fort de Kock, cuit, sub n 1956). 

 Laras Talang, Boekit Niroe, 1700 m., epiphytical in forest. (H. A. B. 

 BuNNEMElJER n, 5347, with young fruits, October 1918). 



The différences betvveen the species of the section Aeridostachya are 

 often not easy to define. They consist often in a différent arrangement of 

 the characteristics. 



Description from a cultivated spécimen and a dried fruiting raceme. 



Eria (sect. Hymeneria) petiolata J. J. S. n. sp. 



Pseudobulbi subglobosi ad turbunati, pauci(2-)nodi, nitidi, virides, 

 sordide violaceo-suffusi, c. 1 — 1.85 cm. longi, 1.3-1.7 cm. diam., 1 — 2folii, 

 novelli nonnuUis vaginis mox fatiscentibus et nervis in formam striarum palli- 

 diarum relinquentibus tecti. Folia erecta, petiolata, lanceolata, apice inaequaliter 

 rotundato-biloba erosulaque, basi acuta, acute marginata, supra in utraque 

 parte costae mediae supra sulcatae subtus non prominentis convexa, crasse 

 carnosa, nitidule atroviridia, subtus opaca et pallida cum stria longitudinali 

 saturate viridi, c. 4.5 — 6 cm. longa, 1.85— 2.4 cm. lata; petiolus canaliculatus, 

 c. 0.5—1 cm. longus. Inflorescentiae pone folia, patentes, laxe multiflorae, 

 folia superantes, pedunculo c. 1.8 cm. longo, dilute viridi, vaginulis 2 

 bracteis similibus donato, rachide pallide virridi, cum pedunculo pilis partim 

 decoloribus partim pallide fuscescentibus parce pubescenti, c. 7 cm. longa. 

 Bracteae reflexae, basi convexae, superne concavae, cum canaliculo longitu- 

 dinali, oblongo-quinquangulares, obtusissimae, angulis erosulae, nervis 5 

 majoribus et 4 minoribus, semipellucidae, flavescenti-albidae, ad c. 0.7 cm. 

 longae, 0.47 cm. latae. Flores patentes, die dulce odorati, c. 0.7 — 0.8 cm. 

 lati, sepalis dorso ad basin pallide fuscescenti-puberulis petalisque incurvis 

 teiiuibus semipellucide flavescenti-albidis. Sepalum dorsale oblongo-ovatum, 

 obtusum, concavum, c. 0.56 cm. longum, 0.275 cm. latum. Sepala lateralia 

 cum pede gynostemii mentum brève latum cum ovario angulum acutum 

 faciens obtusum retusum dorso convexum c. 0.25 cm. longum formantia, 

 oblique triangula, obtusangule falcata, auguste obtusa, concava, c. 0.55 cm. 

 longa, basi 0.375 cm. lata. Petala oblique lanceolata, auguste obtusa, leviter 

 concava, apice convexa, superne vix purpurascenti-suffusa, c. 0.54 cm. 



