^22 Fr - Kränzlin. — Orchidaceae-Odontoglosseae II. 



n. 43591); Staat Matto Grosso (Weddell n. 40). — Subäquatoriale andine Pro- 

 vinz. Bolivia, bei Chiquitos (Weddell n. 3476). 



52. 0. chrysopterum (Lindl.) Kränzl. in Acta Holm. XL VI. (1911) S. A. 82. — 

 0. macropetalum Lindl. Sert. Orch. (18 38) sub t. 48 (non Klotzsch) et Fol. Orch. 

 Oncid. 16 var. B. chrysopterum Lindl.; Reichb. f. in Walp. Ann. VI. (1861) 725; Cogn. 

 in Fl. Bras. III. 6. 296. — Pseudobulbi ovati, compressi, ancipites, foliis 2 infra- 

 bulbosis muniti, ad 4 cm longi, 2,5 ad 2,8 cm lati, diphylli. Folia infrabulbosa et 

 illa pseudobulborum oblonga, obtusa, ad jj cm longa, ad 3 cm lata. Inflorescentia 

 folia multo excedens, ultra 50 cm longa, nutans, ample paniculata, ramis valde diver- 

 gentibus, pedunculus vaginulis paucis valde distantibus obsitus, rami apicem versus 

 fractiflexi, ad 1 5 cm longi, subdistichi, pauciflori, bracteae et ramulorum et florum 

 minutissimae, triangulae, pedicelli tenues, curvuli, ad 2 cm longi. Sepalum dorsale 

 unguiculatum, oblongum, obtusum, margine valde undulatum, lateralia fere ad dimidium 

 coalita, lanceolata, acuta, unguiculata, apice complicata, ubi libera divergentia, undulata. 

 Petala ex ungue angusto subito dilatata, suborbicularia, margine leviter repanda, antice 

 subemarginata. Labelli lobi laterales cuneato-obovati, subobliqui, intermedius ex isthmo 

 satis lato margine dentato valde dilatatus, petalis subaequalis, antice emarginatus, in 

 sinu apiculatus, apiculo parvo, triangulo, calli in ungue labelli et in isthmo in series 3 

 dispositi, dentibus proclivibus. Gynostemii alae fere quadratae, grosse dentatae. Sepala 

 viridi-lutea, obscure rubro-maculata, 1,2 cm longa, dorsale 8 ad 9 mm, 4 ad 5 mm 

 latum, petala aurea, 1,2 cm longa et lata, labelli lobus intermedius cum isthmo aequi- 

 longo ad 1,6 cm longus, et antice aequilatus, lobi laterales 6 mm longi, antice 2,5 mm 

 lati. — Fl. Maio. 



Südbrasilianische Provinz. Matto Grosso; Diamantina, an Baumstämmen am 

 Ufer des Baches (Exped. I. Regneil, Lind man n. 2955!). 



Nota. 0. maeropetalum Klotzsch in Allg. Gart. Ztg. XXIII. (1855) 274 est 0. micropogon 

 Reichb. f. et varietas hujus speciei ea planta est quam var. chrysopterum Reichenbach 1. c. 330 

 nominavit. Eodem nomine »chrysoptero< usus est cl. J. Lindley jam antea (1848) pro planta, 

 quam O. macropetalo suo affinem esse arbitratus est, et hanc varietatem hoc loco pro specie 

 propria propono. 



53. 0. barbatum Lindl. Coli. Bot. (1821—1824) t. 27; Gen. et Sp. Orch. 200; 

 in Bot. Reg. XXIV. (1838) sub t. 48, XXVIII. Mise. 74; Fol. Orch. Oncid. 16; Reichb. f. 

 in Walp. Ann. VI. (1861) 723; Hemsl. Biol. Centr. Am. Bot. III. 279; Rev. hortic. 

 (1887) 265, t. 22; Pfitz. in Engler Prantl, Pflzfam. II. T. 6, 200, fig. 217; Veitch, 

 Man. Orch. PI. VIII. 10; Williams, Orch. Grow. Man. 7. ed. 600; Cogn. Fl. Bras. III. 6^ 

 298; Sander, Orch. Guide 174. — O. microglossum Klotzsch in Otto u. Dietr. Allg. 

 Gart. Zeitg. XXIII. (1855) 233. — O. Herzogii Schlechter in Fedde, Repert. XII. (1913) 

 494. — Pseudobulbi 3 ad 4,5 cm longi, basi circ. 3 cm lati, compressi, subaneipites, 

 interdum fere orbiculares, monophylli. Folia infrabulbosa utrinque 2 illaque pseudo- 

 bulborum oblongo-ligulata, coriacea, acuta, 6 ad 1 2 cm longa, ad 2 cm lata. In- 

 florescentia racemosa, paueiflora, scapus ad 2 cm longus, vaginulis 1 vel 2 minutis 

 vestitus, bracteae minutissimae, triangulae, Ovaria cum pedicellis 2,5 cm longa. Sepala 

 lateralia lanceolata, ad tertiam partem connata, dorsale oblongo-lanceolatum, paulo 

 brevius, cucullatum, obtusum, lateralia 1,5 ad 1,7 cm longa, dorsale 1,2 cm, omnia 

 5 mm lata, lutea, rubro-maculata. Petala subobliqua, spathulato-obovata, obtusa, sul>- 

 aequilonga, 6 ad 7 mm lata, eodem colore quo sepala. Labelli lobi laterales rect- 

 angulariter divergentes, spathulati, antice orbiculares, discus labelli toto ambitu sub- 

 rhombeus, antice margine denticulatus, lobus intermedius unguiculatus, rhombeus vel 

 suborbicularis, apiculatus, totum labellum expansum 2 cm latum, 1 ad 1,2 cm longum; 

 callus pilosulus in basi disci biserialis, dentibus 3, quorum intermedius longior in seric 

 utraque, labellum luteum, callus purpureo-punctulatus. Gynostemium gracile, album, 

 alae breves, leviter emarginatae. 



Var. ct. ciliatum Lindl. Fol. Orch. Oncid. (1855) 16; Reichb. f. in Walp. Ann. VI. 

 (1861) 723; Warming, Symb. Fl. Bras. Centr. P. 29, 845. — O. ciliatum Lindl. 





