573 



ORCHIDACEAE: ZYGOPETALUM. 



574 



Var. (3. stenopetalum Reg el ! in Act. Hart. Peiropol 



X. 374 (1887), in Garten ft. XXXVII. 385. tab. 1277 (1888); 

 Kew Bull, Addit. Ser. IV. 408. 



Folia linearia. Sep ALA PETALAque attenuato-acutissinia. Labklli 

 callus 5-costatus, antice 5-crenulatus. 



Habitat in cacumine mont. Itabira prov. Minas Geraes: 

 terrains ad Serra do Lenheiro; Alv. Silceira in Comm. Geogr. 

 Minas n. 1006. — Var. p. In prov. Minas Geraes: Lietze. — 

 Aprili. 



Libon ; 



e Geol. 



Floret 



6. ZYGOPETALUM BURKEI Reichb. f. pseudo- 

 bulbis mediocribus , anguste oblongis , leviter compressis, 

 obtuse tetragonis, primum vaginis paucis mediocribus satis 

 coriaceis ovatis vel oblongis acutis valde inaequalibus vestitis, 

 demum denudatis, apice di — triphyllis; foliis mediocribus, 

 satis coriaceis, lineari-lanceolatis, acutissimis, 5-nerviis, in- 

 ferne longe attenuatis; pedunculo communi robusto, erecto, 

 foliis satis longiore, inferne subnudo, superne laxe 4— 5-floro; 

 bracteis satis coriaceis, ovatis, acutis, ovario 2 — 3-plo brevio- 

 ribus; floribus majusculis, breviuscule pedicellatis, segmentis 

 patentissimis, superne leviter recur vis; sepalis carnosis, sub- 

 aequilongis, ovato-oblongis, dorsali acuto, lateralibus breviter 

 acuminatis, deflexis, subfalcatis; petalis late oblongis, acutis, 

 sepalo dorsali aequilongis; labello carnosulo, sepalis lateralibus 

 satis breviore, intus brevissime denseque velutino, longiuscule 

 lateque unguiculato, unguiculo lateraliter utrinque distincte 

 auriculato, limbo late obovato-subrotundato, basi dilatato, 

 margine satis undulato et interdum irregulariter denticulato, 

 apice subrotundato et apiculato; callo antice semicirculari, 

 tumido, breviusculo, subadpresso, indiviso, circiter 13-costato, 

 antice denticulato, glabrato; columna longiuscula, crassa, 

 claviformi, antice inferne puberula, apice utrinque auriculata, 

 auriculis elongatis, anticis lineari-oblongis, denticulatis. 



Zygopetalum Barkei Reichb, f. I in Gard. Chron. neiv 

 ser. XX. 684 (1883); L'Orchidoph. 1884. p. 8 et 229; Warner 

 et Will. Orch. Alb. III. tab. 142; Stein, Orchideenb. 599; 

 Journ. des Orch. II. 126, V. 130; E. F. im Thurn in Trans. 

 Linn. Soc. Lond. ser. 2. Bot. II. 282; Veitch, Man. Orch. 

 PI. IX. 44; Williams, Orch. Grow. Man. edit. 7. p. 759; 

 L. Lind. Orch. Exot. 990; Autr. et Dur. Hort. Boiss. 314;* 

 Kew Bull., Addit. Ser. IV. 408; Rolfe in Trans. Linn. Soc. 

 Lond. ser. 2. Bot. VI. 62; Sander, Orch. Guide 249. 



MacJcaii 



Reis 



of Bot. II. 672 (1843, 



Brit.-Guian. II. 266, HI. 1068; Appun, Unter den Trop. 



II. 246 et 292. . 1 \ 



Radices satis numerosae, fasciculatae, breves, robustiusculae, teretes, 



• 4 



leviter flexuosae, simplices, albidae. Pseudobdlbi satis numerosi, aggre- 

 gati, erecti, recti vel leviter arcuati, nitidi, laete virides demura pallidi, 

 superne longiuscule attenuati , apice obtusi , profundiuscule quadrisulcati, 

 5—8 cm. longi, l 1 /*— 8V« cm. crassi. Folia rigidiuscula, erecto-patula, 

 inferne valde concava et plus minusve conduplicata, superne paulo concava 

 vel subplana, supra laete viridia, subtus paulo pallidiora, 2 — 3 dm. longa, 

 2 — 3 cm. lata; nervis robustiusculis, supra paulo impressis, subtus satis 

 promiuentibus ; nervulis secundariis satis numerosis, gracilibus. Peduk- 

 cultjs communis teretiusculus , laevis, strictus vel paulo flexuosus, laete 

 viridis, 3—4 dm. longus, 4—5 mm. crassus. Pedicelli patuli vel erecto- 

 patuli, robustiusculi, teretiusculi, leviter flexuosi, laete virides, cum ovario 



Orchid. II. 



SVt— 3 cm. longi. Biucteak rigldl uvulae, adpreMM, cucullaUe, Ucte 

 virides, 1 — lVi cm. longae. Fi.okkk patuli \cl Mibmitantas, •egmeutis 

 laete viridibus, intus lin.is 7—9 lonjjitudiualibu* craasiusculis iut>ei^ 



istaneo-fuscis inferne leviter interruptis apice plus minusve confluentibas 

 oniatis. Scpala plana vel paulo convex*, basi satis attenuata, tenuiter 

 7— 9-iiervulosa, intertium leviter undulata, circiter 3 cm. longa <t 12 mm. 

 lata. Pktala earnosula, leviter convex* , margine subrcvoluta, inferne 

 leviter attenuata, leviter obliqua, tenuiter 5— 7-nervuloaa, 8 cm. l<m-a, 

 9 — 10 mm. lata. Labellim patentissiroum, superne satis recurvum, su)>- 

 plannm vel leviter coucavum , tenuiter multinervulosum nervulis paulo 

 ramosis, 2 x /t cm. longam, superne fere 2 cm. latum, album, callo carnoso, 

 lineis 13 radiantibus purpureo-violaceis ornato. Columka erecta, paulo 

 incurva, carnosa, semiteres, inferne satis attenuate flavo-viridis vel pallide 

 flava, antice longitudinaliter purpureo-lineaia, 15—17 mm. longa. Capsula 



p eifecU iguota. 



Habitat in Guiana angliea : Schomburgk n 143.5; in rupibus ad 

 Demerara altit 2000 m.: David Burke; ad mont lioraima altit. 1800 m.: 

 Schomburgk, Appun n. 13M, K. b\ im Thurn n. SO, Me Connell et 

 Qucleh n. 96, — In Brasilia septcntrionali forsan adhuc inwnienda. 



7. ZYGOPETALUM VENUSTUM BlDLEY: pseudo- 



bulbis junioribus paulo distinctis, vaginis pluribus subcoriaceis 

 imbricatis breviter acuminatis extendi brevibus triangulari- 

 ovatis internis longiusculis oblongo-triangularibus vestitis, 

 apice 3 — 4-phyllis; foliis mediocribus, subcoriaceis, lineari- 

 lanceolatis, acutissimis, trinerviis, inferne longissime atte- 

 nuatis fere petiolatis; pedunculo communi erecto, robustius- 

 culo, foliis multo longiore, inferne vaginis pluribus submem- 

 branaceis brevissimis acutiusculis vel obtusis remotissimisque 

 vestito, superne densiuscule 10-floro; bracteis submembranaceis, 

 triangulari-ovatis, acutis, ovario multo brevioribus; floribus 

 mediocribus, breviter pedicellatis, segmentis patentissimis; 

 sepalis submembranaceis, ovatis, acutiusculis, lateralibus 

 paulo longioribus leviter obliquis patenti-deflexis; petalis 

 ovato-rhomboideis , obtusis, sepalo dorsali vix brevioribus; 

 labello submembranaceo, sepalis lateralibus satis breviore, 

 utrinque glaberrimo, sessili, late ovato-subrhomboideo, basi 

 subrotundato, margine integerrimo, apice obtuso ; callo antice 

 semicirculari, tumido, brevi, subadpresso, indiviso, obscure 

 costato, margine antice undulato-denticulato; columna brevi, 

 crassiuscula, claviformi, glabra, apice alis magnis patulis 

 ovato-triangularibus obtusis falcatulis apicibus curvis aucta. 



Zygopetalum venustum Ridley! ex E. F. im Thurn in 

 Trans. Linn. Soc. Lond. ser. 2. Bot. II. 283. tab. 47. fig. 1-6 

 (1887); Sander, OrcH. Guide 255. 



Aganisia venusta Rolfe ex Hook. f. in Bot. Mag. sub 



tab. 7270. in adnot. (1892). 



Pskddobulbi aggregati , adulti ignoti. Folia erecta vel erecto- 

 patula, superne plus minusve recurva, inferne satis concava, superne plana 

 vel paulo concava, 18—25 cm. longa, lVi— 2 cm. lata; nervis crassius- 

 culis, supra leviter impressis, subtus valde prominentibus; nervulis 

 dariis satis numerosis, gracillimis. Peduvcui.us communis teretiusculus, 

 laevis, strictus vel paulo flexuosus, 30—40 cm. longus, circiter 3 mm. 

 crassus; vaginae subadpressae, laeves, superne dilatatae, 8—12 mm. longae. 

 Pedicelli patuli, satis graciles, teretiusculi, recti vel paulo arcuati, cum 

 ovario circiter V/t cm. longi. Bracteae adpressae, satis concavae, 4 ad 

 6 mm. longae. Floees patuli, ut videtur albi. Sepala paulo concava, 

 basi breviter attenuata, tenuiter 7— 9-nervulosa, dorsale 13 mm. longum 

 et 8 mm. latum, lateralia 15 mm. longa et 10 ram. laU. Petala mem- 

 branacea, subplana, inferne late cuneata, paulo obliqua, subtiliter 7-nervu- 

 losa, 12 mm. longa, 7 mm. lata. Labellum paten tissimum, superne satis 

 recurvum, leviter convexum, subtiliter multinervulosum, 12—13 mm. 



73 



