ORCHIDACE.E 



erectum, ad basim utrinque in cavitatem vesiculorem inflatum, 

 intra has expansiones vesicseformes subtus in calcar breve conico- 

 obtusum extra sepalorum lateralium basim prominens produc- 

 tum, limbus lineari-angustatus, marginibus involutis, superne in- 

 crassatis, ad apicem leviter dilatatus, obtusus. Totum labellum 

 7 mm. longum, calcar circiter 1 mm. longum, utroque appendix 

 carnosa. Gynostemium 2 mm. longum. 



Cystorchis luzonensis is similar to C.javanica Bl., but smaller. 

 From the dried specimens the leaves appear to have been tinged 

 with madder purple. The middle of the limb of the labellum 

 in dried specimens is brownish. The bladder-like vesicles, one on 

 each side of the short conical spur, are concealed by the lateral 

 sepals. Each bladder contains a round wart-like excrescence. 

 The spur itself protrudes between the lateral sepals. 



C. celebica Schlechter is a closely related species, with the tip 



of the labellum dilated into a semiorbicular-reniform, obtuse 



lobe. My specimens of C. celebica are from 10.5 to 14 cm. high, 



the aphyllous part of the plant not exceeding 6 cm. in length. 



Luzon, Province of Laguna, Mount Maquiling, W. H. Brown Bur. Set. 

 17910, March, 1913. 



25. CYSTOPUS Bl 



A small genus which has been more or less confused with 

 Odontochilus, with representatives in Java, Borneo, New Guinea, 

 Amboina, and New Hebrides. 



1. Cystopus mindanaensis sp. nov. Aff. C. pubescenti Bl. Herba 

 epiphytica foliosa ± 1 dm. alta. Rhizoma repens. Folia ovato- 

 lanceolata, acuta, crenata ; lamina usque ad 3 cm. longa, 1-1.5 cm. 

 lata. Petioli caulem cingentes, circiter 1 cm. longi, prope basim 

 laminae constricti. Flores ± 4, albidi, circiter 1 cm. longi, approxi- 

 mati. Bractese inflorescentias pubescentes, quam pedicellus cum 



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