187 



ORCHIDACEAE: DIACRIUM-CATTLEYA. 



188 



DIACRIUM BICORNUTUM Benth. pseudobulbis ro- 

 bustis, fusiformibus vel subcylindraceis, leviter compressis, 

 multisulcatis, transverse pluriannulatis, apice 3— 4-foliatis ; 

 foliis crasse coriaceis, majusculis, anguste oblongo-ligulatis, 

 obtusis rarius acutiusculis vel subretusis, basi breviuscule 

 vaginatis; racemo erecto, 4— 20-floro, foliis multo longiore; 

 floribns majusculis, patulis, longiuscule pedicellatis ; sepalis 

 late ovato-lanceolatis, obtusiuscule breviterque acuminatis, 

 aequilougis, lateralibus satis obliquis; petalis late ovatis, 

 acutiusculis, anguste unguiculatis , sepalo dorsali subaequi- 

 longis; labello carnosulo, sepalis lateralibus vix breviore, 

 profundc trilobato, basi utrinque dente unico parvo triangulari 

 aucto, lobis lateralibus patentibus ovato-oblongis apice rotun- 

 datis leviter obliquis, lobo intermedio valde producto oblongo 

 apice breviter obtuseque acurainato, disco supra basin alte 

 bicornuto, cornubus erectis triangularibus obtusis lateraliter 

 compressis; columna clavata, semicylindrica, valde compressa, 

 apice utrinque minute unidentata. 



Diacrium hicornntum Benfh.! in Journ. Linn. Soc. Lond. 

 Bot. XV III. 312 (1881); Rolfe in Gard. Chron. ser. 3. II. 

 44. fig. 11 (1887) ; Pfitz. in Engl, und Prantl, Natiirl. Pflanzen- 

 fam. II. 6. p. 140. fig. 145; Veilch, Man. Orch. PL part VI. 

 79 cum icon.; Rolfe in Lindenia VII. 19. tab. 296; Stein, 

 Orchideenb. 214. fig. 70; Bois, Les Orch. 74; L. Lind. Orch. 

 Exot. 752; Kerch. Livr. des Orch. 164. fig. 152; Journ. des 

 Orch. VI. 99 (1895); Broadway in Gard. Chron. 1896. I. 

 548; Orch. Rev. IV. 205; Le Jardin f XI. 79 (1897). 



Epidendnim bicornuhm Hook, in Bot. Mag. tab. 3332 

 (1834) ; Drapiez, Encyclogr. Regn. Veget. II. Juill. 1834 (Bot. 

 Mag.), fig. 1; Paxt. Mag. Bot. V. 245. cum tab.; Mutel, Premier 

 Mem. stir les Orch. tab. 2; Schomb. Trav. in Brit. Guian. III. 

 907 ; Lindl. in Hook. Lond. Journ. of Bot. II. 671, Folia 

 Orch. Epidendr. 27; Reichb. f. in Bonpland. IV. 327, in 

 Walp. Ann. Bot. VI. 345; Jennings, Orch. tab. 21; Du Buyss. 

 UOrchidoph. 333; Williams, Orch. Alb. IV. tab. 157, Orch. 

 Grow. Man. edit. 7. p. 379; Watson, Orch. 239 aim tab.; 

 Journ. des Orch. II. 66; Gard. Chron. 1894. II. 336. fig. 45; 

 Journ. of Hortic. 1896. II. 28. fig. 6; A. Finet in Bull. Herb. 

 Boiss. VII. 122. tab. 3. fig. a—g; Journ. of Hort., XL. 153, 

 154, fig. 39 (1900). 



Caularthron bicornalum Rafin. FL Tellur. II. 41 (1836). 



Pseudobulbi satis numerosi, densiascule aggregati, erecti vel aseen- 

 dentes, cavi, pallide virides vel flavescentes, vaginis pluribus membranaceis 

 obtusis striatis pallidis arete adpressis 3—7 cm. longis vestiti demum 

 denudati, 12— 30 cm. longi, 2-6 cm. crassi. Folia rigida, patula vel 

 erecto-patula superne plus minnsve reflexa, leviter concava, supra intense 

 viridia profundiuscule canaliculata et subtiliter pluristriata, subtus paulo 

 pallidiora et leviter carinata, 8—20 cm. longa, 2—4 cm lata. Pedunculus 

 communis strictus vel paulo flexuosus, robustiusculus, teres, laete viridis, 

 27i— 37* dm. longus; vaginae remotae, tenuiter coriaceae, arete adpressae, 

 pbtusae, subtiliter multistriatae, pallide virides, 10-15 mm. longae! 

 Pedicelu patentissimi, graciles, recti vel paulo flexuosi, teretiusculi, 

 albescentes vel pallide virides, 2-3 cm. longi. Bbacteae patulae, coria-' 

 ceae, rigidae, triangulari-ovatae, obtusae, valde concavae, margine scariosae, 

 teuuiter multistriatae, pallide virides, 4-7 mm. longae. Flores suaveo- 

 lentes. Ovarium lineari-subclavatum , obtuse bexagonum, tenuiter 6-sul- 

 catum, rectum vel leviter arcuatum, albo-viride, l-l'/j cm . longum. 

 Sepala patentissima , paulo concava, tenuiter multinervulosa, basi satis 

 attenuata, alba, 27*-3 cm . i 0Dg a, 14 -18 mm. lata. Petala patentissima, 

 leviter asyrametrica, paulo concava, tenuiter multinervulosa, alba, interdum 



maculis paucis minutis purpureo-violaceis notata, 24—28 mm. longa, 

 20—22 ram. lata. Labellum patentissimum, rigidiusculum, rectum, sub- 

 planura, tenuiter plurinervulosura, album et purpnreo-raaculatum disco 

 flavo, 24—28 mm. longum, circiter l 1 /* mm. latum, lobo termiuali circiter 

 172 cm. longo, 6—7 mm. lato. Columna erecta, paulo incurva, alba, 

 antice purpureo-lineata, 14—15 mm. longa, superne transverse 9 mm. 

 lata, 3 mm. crassa. Capsula ignota. 



? Var. p. indi visum Cogn. 



Epidendr urn indivisum Bradf.l in Griseb. Fl. Brit. 



W. 



Diacrium indivisum Broadway in Gard. Chron. 1896, 



I. 548 in text.; Orch. Rev. IV. 206. 



Planta minor, 15-25 cm. alta. Folia 7—8 cm. longa, 10-12 mm. 

 lata. Flores 12 mm. lati, labello indiviso vel basi utrinque minute 

 auriculato. 



Habitat in Guiana anglica : Appun n. 657 ; in arboribus ad Berbice : 

 Schomburgk n. 429 ; ad flum. Essequebo: Jenman n. 3590; secus flum. 

 Corentyne prope Realla: E. F. im Thurn; in rupibus et in arboribus ins. 

 Trinitatis: Dr. Bradford; in ins. Tobago: G. L. Meyer n. 2. In Bra- 

 silia septentrionali forsan adhuc invenienda. — Var. p. In ins. Trinitatis: 

 Dr. Bradford. — Floret Januario—Aprili. 



XLVII. CATTLETA Lindl. 



Cattleya Lindl. Coll. Bot. tab. 33 (1824), in Bot. Regist. XI 

 tab. 953 (1825) , Orch. Seel. 16, Gen. and Spec. Orch. 116; 

 Spreng. Syst. Veget. III. 681, Gen. II. 672; Endlich. Gen. 194; 

 Steud. Nomencl. edit, secund. I. 311 (Cattleia) ; Meissn. PI 

 Vase. 372 (279); Lemr. in BOrhig. Did. Sc. Nat. III. 238; 

 Beer, PraJct. Stud. Fam. Orch. 208 (part.); Duchartre, Man 

 Gen. des PI. IV, 443; Griseb. Fl. Brit. W.-Ind. Id. 620; 

 Du Buyss. UOrchidoph. 227 ; Benth. in Journ. Linn. Soc 

 Lond., Bot. XVII 1. 314, et in Benth. et Rook. Gen. PI. Ill 

 531; Barb. Rodr. Gen. et Spec. Orch. Nov. II. 156; Nichols 

 Diet, of Gard. I. 280; Veitch, Man. Orchid. PI. part II. 1; 

 UOrchidoph. 1888. p. 73; Pfitz. in Engl, und Prantl, Natiirl 

 Pflanzenfam. II. 6. p. 146 ; Rolfe in Gard. Chron. ser. 3. V 

 491 (1889), in Orch. Rev. III. 266 (1895); Stein, Orchideenb 



• 



112; Bois, Les Orch. 82; L. Lind. Orch. Exot. 620; Kerch 

 Livr. des Orch. 264 et 386; Williams, Orch. Grow. Man 

 edit. 7. p. 149. — Maelenia Dumort. in Mem. Acad. Brux 

 IX. 17 (1834), in L 9 Hortic. Belg. II. 198 (1834) ; Flora, I 

 52 (1836). — Epidendrum sect. Epicladium (pro max. parte) 

 Reichb. f. in Walp. Ann. Bot. VI. 310 (1861), Xenia Orch. 



II. 27 (1862). 



■ 



« 



Sepala libera, subaequalia, patentia vel rarius 

 conniventia. Petala sepalis latiora vel rarius similia. 

 Labellum basi columnae affixum, liberum, erectum, 

 plus minusve distincte trilobatura; lobi laterales lati, 

 columnam amplectentes vel involventes; lobus termi- 

 nalis patens, polymorphus, a lateralibus bene distinctus 

 vel cum iis continuus. Columna longiuscula, valida, 

 semiteres, exalata, saepius incurva; clinandriutn obli- 

 quum, dentibus vel lobis tribus saepius prominentibus 

 obtusis. Anthera terminalis, opercularis, incumbens, 

 convexus vel semiglobosus, distincte bilocularis, loculis 



