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Cystopus Hydrocephalus J. J. s. n. sp. 



Caulis e basi decumbente radicante erectus, c. 6-14 cm. 

 longus. Folia oblique oblongo-ovata, acuta, crispa, costa média 

 subtus prominente, c. 2.5-3.0 cm. longa, 1.1- -1.6 cm. lata; 

 petiolus brevissimus, cum vagina tubulosa c. 0.5 — 0.7 cm. longus. 

 Inflorescentia erecta, c. 1— 2flora, pedunculo ad c. 2.5 cm. longo 

 •cum rachide c. 0.9 cm. longa pubescenti. Bracteae erectae, lan- 

 ceolatae, longe acuminatae, concavaB, pilosae, c. 1-1.3 cm. longae. 

 Flores maximi, c. 3 cm. longi, sepalis parallelîs. Sepalum dorsale 

 cum petalis conglutinatum, triangulo-lanceolatum, obtusum, con- 

 cavum, dorso pilosum, lnervium, c. 1.(3 — 2.2 cm. longum, basi 

 0.5 — 0.7 cm. latum. Sepala lateralia oblique oblonga, basi antice 

 oblique rotundato-dilatata concava labelli saccum totum amplectentia, 

 apice obtusa, concava, dorso pilosa, lnervia, c. 2.5 — 3 cm. longa, 

 0. 83-- 1 cm. lata. Petala oblique lineari- la nceolata, falcata, obtusa, 

 lnervia. c. 1.6-2.1 cm. longa, 0.4-0.5 cm. lata. Labellum 

 ■magnum, spath ulatum, basi saccatum, totum c. 3.2 — 3.5 cm. 

 longum, sacco rotundato, intus utrinque glandula lamelliformi 

 parva pectinato - trifida donato, ungue late lineari, concavo, interne 

 integro, infra laminam utrinque irregulariter 3-4crenato vel 

 lacinulato, cum sacco c. 2.1 cm. longo, 0.45 cm. lato, lamina 

 ambitu orbiculari, ultra médium bifida, apice in sinu recurva, 

 c, 1.35 cm. longa, 1.3 cm. lata, laciniis semiorbicularibns, irre- 

 gulariter marginatis. Gynostemium totum c. 1 — 1.2 cm. longum, 

 basi subtus lamellis 2 majusculis, parallelis, in saccum porrecto- 

 dependentibus, aratriformibus, semiovato-triangulis, basi contractis, 

 postice rotundatis, antice acutis, c. 0.45 cm. longis donatum, 

 clinandrio magno, valde concavo. Anthera magna, in clinandrium 

 immei-sa, cordata, longissime acuminata, apicem versus carinata, 

 •acuta, c. 0.9—1 cm. longa. Pollinia 2, clavata, bipartita, caudicula 

 elongata, glandula crassa lineari, tota c. 0.925 cm. longa. Rostellum 

 2partitum, laciniis subulatis, acutis, c. 0.25 cm. longis. Stigma 

 ■clinandrio simile. Ovarium c. 1.6 cm. longum. 



Bornéo: Amai Ambit (H. Hallier n. 3285). 

 Die Bluten dieser Art ubertreften noch diejenigen des Odon- 

 iochilus macranthus Hook. f. 



