— 116 - 



dorso compressum, albidum, basi in pedem brevissimum latum rotundatum 

 sulco a basi labelli separatum subproductum, usque ad apicem auricularum 

 c. 0.27 cm. longum, clinandrio transverso, concavo cum costa longitudinali 

 postice deiitifera, dorso late truncato, auriculis triangulis, dentiformibus. 

 Anthera magna, cucullata, paulum a dorso compressa, apice in rostrum 

 triangulum truncatum convexum producta, basi lata truncata, thecis orbicu- 

 laribus convexis sulco separatis didyma, pailide flavescens, fere 0.25 cm. lata. 

 Pollinia 4, subglobosa, nitidula, diiute flava, caiidiculis stipiti mediocri 

 oblongo albo inserta, glandula mediocri, late oblonga, alba, tota c. 0.225 

 cm, longa. Rostellum submalleiforme, antice bilobum, postice bidentatum. 

 Stigma suborbiculare. Ovarium brevissimum, crassum, 6sulcatuin, pailide 

 virescens, fere 0.2 cm. longum. 



Sumatra: Lampong, Menggala. (H. A. Gusdorf, cuit, in Hort. Bog. sub 

 n. 31). 



This is certainly near A. major Ridl., wliich bas aiso one-flowered 

 inflorescences, but the leaves and flowers are mucli smaller. The form of 

 the side lobes bas not been described by Ridley; in A. imiflorus they are 

 triangular and acute. The apex of the lip is nearly truncate with a conspicuous 

 conical callus beneath. 



Description from a cultivated spécimen, according to the label intro- 

 duced from Southern Sumatra into the Buitenzorg Gardens by Mr. H. A. 

 Gusdorf. 



A r a c h n i s V a n m u I 1 e m i i J. J. S. n. sp. 



Caules elongati, scandentes, radicantes, ramosi, teretes, nitidule sordide 

 virides, c. 0.9 cm. diam., internodiis c. 4 cm, longis. Folia patentia, oblonga, 

 apicem versus angustata, vix oblique obtusa, minute retusa, basi lata '•/s 

 amplexicaulia, marginibus praesertim medio valde recurvis convexa cum 

 canalicula satis inconspicua, costa média subtus haud vel vix prominula, 

 inferne longitudine c. 4 — 5 cm. utrinque subundulato-dentata, coriacea, 

 rigida, nitidule viridia, subtus opaca et paulo pailidiora, c. 11 — 13 cm. 

 longa, 3.5 cm. lata; vaginae tubulosae, apice antice breviter angulato- 

 excisae, longitudinaliter prominule nervosae, sordide virides, subopacae, 

 internodia aequantes, c. 1 cm. diam. Inflorescentiae vaginam dorso ad 

 basin perforantes, patentissimae, arcuatae, parce ramosae, laxe multiflorae, 

 ad c. 1.7 m. longae, pedunculo tereti, sordide viridi, superne cum rachide 

 subviolaceo-sordido cum lenticellis viridibus, c. 45 cm. longo, 0.5 cm. 

 diam., vaginulis c. 5 brevibus tubulosis obtusis superne laxioribus donato, 

 ramis c. 3, partentibus, simplicibus, ad c. 40 cm. longis, rachide flexuosa, 

 internodiis c. 3—11 cm. longis. Bracteae adpressae, brevissimae, rachidem 

 amplectentes, brevissime tubulosae, antice rumpentes, late subtriangulae, 

 obtusissimae, concavae, prominenter nervosae, sordide flavescenti-virescentes, 

 dorso c. 0.2—0.3 cm. longae. Flores magni, pulchri, valde aperti, die leviter 

 suaveolentes, carnosi, c. 7,5 cm. lati, sepalis petalisque patentissimis, li- 



