592 A. CoaNiAux: 



apice bifoliatos incrassatis. Folia ampla, nervosa, subplicata. Scapi 

 ad latera pseudöbulborum reflexi, simplices. Racemi laxe pauciflori, 

 floribus maximis breviter pedicellatis. 



Conspectus specierum. 

 I. Sepalum dorsale obovato-oblongum, obtusum; labelli mesochilium trans- 



verse crasse plicatum 378. C. macrantJia Hook. 



II. Sepaluin dorsale late rliomboideum, acutum; labelli mesochilium eplicatum. 



379. C. speciosa Hook. 



378. Coryaiithes iiiacrautlia Hook, pseudobulbis oblongo-conicis, 

 miütisulcatis, 5 — 9 cm. longis; foliis lanceolatis, acutis, inferne lon- 

 gissime angustatis, 15 — 30 cm. longis, 3 — 5 cm. latis; scapo reflexo 

 vel pendulo, robusto, 25 — 40 cm. longo, apice laxe 2 — 3-floro; pedi- 

 cellis cum ovario 8 — 15 cm. longis; bracteis ovato-oblongis, acutis, 

 4 — 5 cm. longis; sepalis undulatis, dorsali pendulo, obovato-oblongo, 

 obtusiusculo, 4 — 5 cm. longo, 2 — 2Y., cm. lato, lateralibus contiguis, 

 deflexis, ovato-oblongis, convolutis, 8 — 9 cm. longis, 4 — 5 cm. latis; 

 petalis pendulis, lanceolato-ligulatis, acutis, valde undulatis, 5 — 6 cm. 

 longis, 10 — 12 mm. latis; labelli l^ypocbilio hemisphaerico, subtrilobo, 

 antice pubescente; mesochilio transverse crasse pluriplicato, intus 

 pubescente; epicbilio circiter 4 cm. profunde et 5 cm. lato, late conico, 

 margine patulo, apice trilobato, lobis lateralibus uncinato-incurvis, 

 lobo intermedio breviore apice truncato; columna 5 cm. longa, cornubus 

 basilaribus obtusis, arcuatis, antice porrectis. 



Co7'yanthcs macrantha Hook, in Bot. Mag. (1831) t. 3102; Bot. 

 Reg. XXII t. 1841; Pe.scator. t. 30; Hook.f. in Bot. Mag. t. 7692; 

 Cogn. in Mart. Fl. Bras. III. 5 ;;. 514. 



Flores odorati, flavo-ochracei et albo-lutei, purpureo-punctati. Fl. I. 



Hab. in Trinidad: Hort. Kew. (ex Hand-List Orcli. Cult. in Gaid. 

 Kew I. edit. p. 65, IL edit. p. 57). — Venez., Guiana angl. 



379. Coryanthes speciosa Hook, pseudobulbis anguste oblongis, 

 profunde multisulcatis, 7 — 14 cm. longis; foliis lineari- lanceolatis, acu- 

 minatis, inferne in petiolum longissime angustatis, limbo 25 — 40 cm. 

 longo, 2 — 3^2 ciii- lato, petiolo 5 — 15 cm. longo; scapo robusto, pen- 

 dulo, 35—50 cm. longo, apice laxe 2 — 3-floro; pedicellis cum ovario 

 6 — 8 cm. longis; bracteis lanceolatis, acuminatis, 3 — 4 cm. longis; 

 sepalis valde inaequalibus, dorsali late rliomboideo, acute, undulato, 

 2Y2 — 3 cm. longo, 25 — 33 mm. lato, lateralibus approximatis, valde 

 falcatis, ovato-oblongis, acutiusculis, apice leviter incrassatis, 6 — 7 cm. 

 longis, 3 — 4 cm. latis; petalis ligulatis^ acutiusculis, valde undulatis, 

 basi cum columna breviter connatis et decurrentibus, 3Y., — 4 cm. 

 longis, 7 — 8 mm. latis; labelli hypochilio oblique hemisphaerico, antico 



