! 



Oncidium. ^03 



distantibus praeditus, bracteae triangulae, 2 ad 3 mm longae, pedicelli cum ovariis ad 

 1,5 cm longi. Sepalum dorsale obcordatum, synsepalum lateralium oblongum, apice 

 bidentatum, 6 vel 7 mm longa, antice 2 mm lata. Petala obovata, suborbicularia, 

 brevi-unguiculata, ad 8 mm, antice 7 mm lata. Labelli lobi laterales parvi, lineares, 

 retrorsi, trianguli, apice obtusi vel rotundati, isthmus lobi intermedii vix conspicuus, 

 ille latissimus, basi cordatus, antice sinuatus, transverse oblongus, vix conspicue crenu- 

 latus, totum labellum 1,4 cm longum, inter lobos laterales 8 mm, antice 1,8 cm latum, 

 crista labelli basi bicruris, dentibus 3 minoribus antepositis. Gynostemii crassi alae 

 membranaceae, magnae, acinaciformes, obtusae, integerrimae, Flores omnino minute 

 velutini, albi vel rosei vel albi, roseo-variegati. — Fl. Aprili ad Junium. — Fig. 1 E. 



Westindische Provinz. Guba (Linden n. 1759!, Otto n. 312); Jamaica 

 (von Veitch eingeführt!); Haiti (Ehrenberg, Picarda); Sto. Domingo (Eggers 

 n. 1805b, c, d, von Tuerckheim n. 3015!); St. Barthelemy (Forsstroem!). 



Nota. Ab 0. variegato Swartz statura plerumque majore et floribus ubique breviter tarnen 

 dense velutinis diversa. 



20. 0. sylvestre Lindl. in Ann. and Mag. Nat. Hist. S. 3. I. (1858) 332; Orch. 

 Wright. 8; Griseb. Fl. Brit. W. Ind. Isl. 632; Cat. pl. Cubens. 266; Sauv. Fl. Cub. 231; 

 Urban, Fl. Portor. 181; Gogn. in Urb. Symb. Antill. VI. 655; Fawcett et Rendle Fl. 

 Jam. 130 (in adnot.). — O. pulehellum Bello Ap. Fl. Puerto-Ric. (1883) 117 (non 

 Hook.). — Rhizoma longe repens, radicibus longissimis copiosis obsitum. Folia sessilia, 

 aggregata ad 6, rarius plura, oblonga vel lanceolata vel imo linearia, acuta, margine 

 integerrima, plerumque conduplicata, saepius falcata, rigida, ad 1 2 cm longa, 6 ad 

 8 mm lata. Inflorescentia plerumque racemosa, pauciflora, rarius ramo uno alterove 

 aucta, scapus ad 40 cm longus, plerumque brevior, strictus, bracteae lineares, squar- 

 rosae, ad 3 mm longae, tenui-membranaceae, pedicelli cum ovariis ad 1,2 cm longi. 

 Sepala obovato-oblonga, subspathulata, apice truncata apiculataque, 7 ad 9 mm longa, 

 lateralia in synsepalum biapiculatum connata. Petala obovata, spathulata, retusa cum 

 apiculo, ad 7 mm longa, antice 4 ad 5 mm lata. Labelli lobi laterales basi truncati, 

 late trianguli, rotundati sensim in isthmum brevem lobi intermedii angustati, margine 

 isthmi saepius minute denticulato, lamina late cordato-reniformis, antice profunde 

 sinuata; crista antice lamellulis 5 composita, totum labellum 1,2 ad 1,4 cm longum, 

 inter lobos laterales 6 ad 7 mm, antice 1,6 ad 1,8 cm latum. Gynostemii alae magnae, 

 membranaceae, acutae, semiovatae, integrae. Flores rosei. — Fig. 1 O. 



Westindische Provinz. Bahama-Inseln , Andros (Northrop n. 543); Guba, 

 bei Monteverde (Wright n. 715!, 668!, 670, 333!, 1488!, 3289); Jamaica (Wull- 

 schlaegel n. 1094!, Harris n. 7621); Porto Rico, an Kaffee- und Zitronenbäumen, 

 ebenso an Grescentia Gujete längs des Flusses Penuelas, am Rio Grande bei Aguada 

 und an anderen Orten (Krug n. 1209, 1228, Sintenis n. 2186!, 2213!, außerdem 

 n. 2107, 4867 und 6842 — nach Gogniaux). 



21. 0. tetrapetalum (Jacq.) Willd. Spec. IV. (1806) 112; Lindl. Gen. et Sp. Orch. 

 198; Griseb. Fl. Brit. W. Ind. Isl. 631 e. p.; Reichb. f. in Walp. Ann. VI. (1861) 717; 

 Gogn. in Urb. Symb. Ant. VI. 655. — O. quadripetalum Swartz in Nov. Act. Holm. XXI. 

 (1800) 240. — O. pauciflorum Lindl. Coli. bot. (1821) sub t. 27, Gen. et Sp. Orch. 198. 

 — Epidendrum tetrapetalum Jacq. Enum. PI. Garib. (1760) 30; Sei. stirp. 230, t. 142 et 

 Pict. t. 216; Amer. Gew. t. 256. — Gymbidium tetrapetalum Swartz, Nov. Acta Ups. 

 VI. (1799) 74. — Oncid. tricolor Hook, in Bot. Mag. (1844) t. 4130. — O. guttatum 

 Fawcett et Rendle, Fl. Jamaica I. (1910) 130, t. 29, f. 18 — 21 e. p. (non Reichb. f.). — 

 Folia rosulata 6 ad 8, magnitudine satis diversa, lanceolata, acuta, canaliculata, margine 

 integra, carinata, crassa, carnosa, rigida, ad 15 cm longa, interdum ultra 2 cm lata. 

 Scapus cum racemo aut (saepius) panicula ad 40 cm longus, bracteae anguste tri- 

 angulae, membranaceae 3 mm longae, pedicelli cum ovariis ad 2 cm longi. Sepalum 

 dorsale oblongum, basin versus bene angustatum, acutum ; lateralia in synsepalum con- 

 cavum, oblongum, obtusum, post labellum absconditum, apice biapiculatum connata, 

 omnia 8 vel (inferius) 9 mm longa. Petala obovata, obtusa vel brevissime apiculata, 



