Orchidaceae. 459 



Jobo: Siiitenis 426G, 4378, 4437, 4709, G236, 6314; Guadüloupc ad 

 Gommier, ßains-Jaiines, Matouba, Vieux-Habitants, Bouillante, fre- 

 qucns, alt. 480 — 900 m.: L'Herminior, Duchassaing, Dnss n. 3349; 

 Dominica: Imray, Ramag-e, Eggers n. 35, 646; Martinique snpra 

 arbores in sylvis Imraidis vulgaris: Jacquin, West, Siel)er u. 336, 

 Hahn n. 85, Duss n. 2079; St. Vincent: Guilding, Eggers n. 6894, 

 H.H. et G.W.Smith n. 471; Trinidad: De Schack. — Amer. trop. 



213. Isochihis pauciflorus Cogn. (n. sp.) caulibus satis niime- 

 rosis, basi gracillimis teretiusculis denudatis, superne satis incrassatis 

 leviter compressis vaginis foliorum tectis, apice densiuscule pauci — 

 plnrifoliatis; foliis erecto-patulis, linearibus, superne angustatis, apice 

 truncatis et suboblique emarginatis, subconduplicatis, dorso carinatis; 

 pedunculo communi brevissimo, subfiliformi, uni — paucifloro, basi 

 vaginis pluribus irabricatis incluso; bracteis linearibus, acuminatis, 

 pedicellis brevioribus; floribus primum erectis demum pendulis, lon- 

 giuscule pedicellatis; sepalis carnosulis, aequilongis, liberis, 3-ncrvu- 

 losis, dorsali oblonge, acute, subconduplicato, lateralibus anguste 

 triangularibus, acutissimis, mentum paulo prominens formantibus; 

 petalis oblongo-ligulatis, acutis, sepalis aequilongis; labello petalis 

 paulo longiore, inferne carnosulo, lineari, valde flexuoso, ad medium 

 obscure bicostato verruculoso et subtiliter puberulo, superne meni- 

 branaceo dilatato late subrhomboideo, apice late rotimdato; columna 

 gracili, apice latiuscule obtuseque bialata. 



Rhizoma brave, crassura, radicibus numerosis, gracilibus, longius- 

 culis, flexuosis, fuscescentibus. Gaules aseendentes, snbrecti, 10 — 12 cm. 

 longi, inferne 1 mm. superne ly., — 2 mm. crassi. Folia rigidiuscula, 

 multistriata, 4 — 7 cm. longa, 3 — 5 mm. lata; vaginae adpressae, satis 

 coriaceae, indivisae, lateraliter compressae, 1 — 2 cm. longae. Pedunculus 

 communis erectus, 1 — 1 1/3 cm. longus; vaginae basilares arcte adpressae, 

 subcoriaceae, obtusiusculae, 6 — 9 mm. longae. Pedicelli tenuiter filiformes, 

 cum ovario lineari circiter 15 mm. longi. Bracteae 4 — 5 mm. longae. 

 Sepala erecta, 7 mm. longa, 3 mm. lata. Petala tenuiter membranacea, 

 fere usque ad apicem 3-nervulosa, inferne paulo attenuata, vix obliqua, 

 7 mm. longa, 2 mm. lata. Labellum erectum, satis concavum, 8 mm. 

 longum, basi 1 mm. prope apicem 4 — 4^3 mm. latum. Columna leviter 

 incurva, 5 mm. longa, basi in pedem 1 — 1 1/2 "i™- longum producta. 



Hab. in Guadeloupe supra arbores in sylvis Bonbariman ad 

 Haut-Matouba, 850 m. alt, m. April, fl.: Duss n. 4193. 



XXXI. Tetragamestus Kchb.f. 



Rchb.f. in Seem. Bonpland. 11 (1854) p. 21, Xen. Orch. I (1854) 



p. 42; Pßtz. in Engl, und Prantl, Natürl. Pflanxenfam. IL 6 p.l41; 



Coyn. in. Mart. FL Bras. III. 5 p. 7. 



Sepala subaequilonga, erecta vel erecto-patiila, libera, lateralia 



latiora mentum paulo distinctum formantia. Petala sepalo postico 



