ORCHIDACEiE 



24. CYSTORCHIS Bl 



Until recently the genus Cystorchis was known only through 

 two valid species. At present nine species are recognized, three 

 of which are natives of the Philippines. 



1. Cystorchis aphylla Ridl. in Journ. Linn. Soc. 32 : 400. 



Luzon. 



Also Java and Malacca. 



2. Cystorchis javanica Bl. Fl. Jav. Orch. 87. C. variegata var. 



purpurea Ridl. in Journ. Linn. Soc. 32 : 399. Eta?ria javanica Bl. 



Bijdr. 410; Lindl. Gen. & Sp. Orch. 491. 



Mindanao, District of Davao, Magaum — Compostela Trail, C. M. Weber 

 286. In dense forest, 45 meters above sea level. Flower red and green ; fruit 

 light green tinged with red, upper surface of the leaves greenish purple, 

 lower surface red purple, lamina about 4 cm. long. 



3. Cystorchis luzonensis sp. nov. Herba terrestris, gracilis, aff. C. 

 javanicas Bl. sed minor. Rhizoma repens, elongatus. Caules erecti 

 vel ascendentes. Tota planta usque ad 2.5 dm. alta. Folia 4-10, 

 ovato-lanceolata, petiolata, chartacea, in sicco margine minute 

 crenulata, lamina ad basim rotundata, abrupte in petiolum con- 

 tracta, ad apicem breviter acuminata, valde acuta, 1.5-2.5 cm. 

 longa, 8-15 mm. lata. Petiolus usque ad 7 mm. longus, vaginans, 

 superne sulcatus. Internodia usque ad 1 cm. longa. Pedunculus 

 vel pars aphylla circiter 1.5 dm. longus, pilosus, pilis albidis. 

 Bracteae infra racemum 2-3, ad basim vaginataa, subpatentes, 

 circiter 1 cm. longae, acutas. Flores in racemo subdenso dispositi. 

 Pedicellus cum ovario circiter 5 mm. longus. Bractea? inflores- 

 centise usque ad 5 mm. longas, acuta?. Sepala lateralia oblonga, 

 obtusa, sparsim hirsuta, uninervia, 7 mm. longa, usque ad 2.5 mm. 

 lata. Sepalum dorsale lanceolatum,fastigatum,subacutum,6 mm. 

 longum, ad basim vix 2 mm. latum, petalis adherens, sparsim 

 hirsutum. Petala linearia, obtusa, circiter 1 mm. lata. Labellum 



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