353 
basi truncato-subcordato, apice profundiusenle lateque emargi- 
nato, margine satis undulato-crispo, sinubus inter lobos latis- 
simis subrectangulis, disco basi late calloso, callo baseos 
obcordato in rostrum anceps exeunte, papulis geminis utrin- 
que juxta laminam rostriformem additis; columna brevi, 
crassa, glabra, alis satis patulis, latiusculis, quadrangulis, 
margine integerrimis; anthera satis convexa, sub lente sub- 
tiliter papillosa, superne obscure costata, antice obtuse trian- 
gula; tabula infra stigmatica utrinque obtusangula. 
Oncidium Marshallianum Reichb. f. in Gard. Chron. 1866. 
p. 682, 1868. p. 1338, new ser. VIII. 778 (1877); Hook. f. 
in Bot. Mag. tab. 5725; Flor. Mag. new ser. tab. 285 (1877); 
Du Buyss. L Orchid. 425; Belg. Hortic. 1878. p. 105, 1880. 
p. 124; Regel in Gartenfl. 1879. p. 193, tab. 979; L'Orchidoph. 
1886. p. 136; Nichols. Dict. of Gard. II. 417; Williams, 
Orch. Alb. V. tab. 240, Orch. Grow. Man. edit. 7. p. 622 
cum ic.; Lindenia V. 23. tab. 202; Watson, Orch. 383; Veitch, 
Man. Orch. Pl. VIII. 60 cum ic.; Bois, Orch. 158; L. Lind. 
Orch. Exot. 901; Cogn. Dict. Ic. Orch., Oncid. tab. 8; Sander, 
Orch. Gwide 186. 
PsEUDOBULBI aggregati, erecti vel erecto-patuli, paulo obliqui, superne 
leviter attenuati, primum laeves, demum profundiuscule plurisulcati, niti- 
duli, intense virides, 5—10 cm. longi, 2'/2—4 em. lati. Forta rigidiuscula, 
erecto-patula, basi breviter subconduplicata, superne satis concava, supra 
nitida et intense viridia, 15—25 cm, longa, 2'/—4 cm. lata; nervo mediano 
supra profunde canaliculato, subtus valde prominente; nervulis lateralibus 
paulo distinctis. PEDUNCULUS communis saepius leviter arcuatus, superne 
paulo flexuosus, teretiusculus, laevis, intense viridis, interdum usque 1 m. 
longus vel ultra, 4—6 mm. crassus, ramis patulis vel erecto- patulis, 
longiusculis, satis gracilibus, alternis, subdistiehis, simplicibus. PEDICELLI 
patuli, graciles, leviter arcuati, eum ovario lineari-subelavato acutiuscule 
trigono 2!/,—3!/» em. longi. BRACTEAR rigidiusculae, adpressae, satis 
concavae, 2—4 mm. longae. FLORES nutantes, satis variabiles. SEPALA 
pallide flava vel flavo-viridia et transverse irregulariterque fusco-zonata, 
dorsale valde concavum, tenuiter 7-nervulosum, 12—15 mm. longum, 
9—11 mm. latum ; lateralia leviter concava, tenuiter 5-nervulosa, 18—21 mm, 
longa, 5— mm. lata, superne satis divergentia. PETALA patentissima apice 
saepius leviter recurva, paulo concava, satis obliqua, aureo-flava, ad medium 
dense irregulariterque castaneo-fusco maculata, 20—24 mm. longa, superne 
16—19 mm. lata. LABELLUM flavo-aureum, basi aurantiaco-purpureo 
maculatum, 3'/»—4 cm. longum; lobis basilaribus 2!/,—3 mm. longis et 
fere totidem latis; lobo terminali paulo convexo, distincte 9 —11-nervuloso 
nervulis satis ramosis, 2—2?/2 cm. longo, 3'/2—4 cm. lato. COLUMNA 
flavescens, leviter ineurva, 6—7 mm. longa, alis albis, 2 mm. latis, 
ANTHERA alba vel flavescens, CaPsULA ignota. 
Formae hortenses principales sunt: 
Var. AvRANTIACUM Cogn. Chron. Orch. n. 41. p. 322 (1901). 
Var. suLPHUREUM Hort.; Gard. Chron. ser. 3. XXIX. 272 (1901); 
Orch. Rev. 1901. p. 155; Sander, Orch. Guide 186; Kew Bull. 1902. 
Append. III. 91. 
Habitat in arboribus ad Serra dos Orgáos prope Novo-Friburgo 
prov. Rio de Janeiro: Blunt; in sylvis prov. Minas Gerais altit. 900 ad 
1200 m. secundum Godefr.-Leb. (L'Orchidoph. 1886. p. 136); in Brasilia 
loco accurato haud indicato: Raben n. 848. — Floret Maio— Junio. 
59. ONCIDIUM PECTORALE Lor. pseudobulbis 
mediocribus, ovoideis, satis compressis, junioribus basi vaginis 
paucis magnis foliaceis coriaceis oblongo-ligulatis acutis dorso 
carinatis inferne articulatis vestitis, vetustioribus denudatis, 
apice diphyllis; foliis magnis, coriaceis, lanceolato-ligulatis, 
apice acutis, basi longiuscule attenuatis; pedunculo communi 
ORCHIDACEAE: ONCIDIUM. 
11 
354 
patulo vel nutante, robustiusculo, foliis multo longiore, inferne 
simplici, superne saepius satis ramoso et laxiuscule multifloro ; 
bracteis anguste triangularibus, acutissimis, ovario multo 
brevioribus; floribus magnis, longiuscule pedicellatis, segmentis 
patentissimis, tenuiter membranaceis; sepalis longiuscule 
angusteque unguiculatis, margine leviter undulatis, dorsali 
ovato, apice obtuso vel subrotundato, lateralibus satis longiori- 
bus, oblongis, obtusis, inferne usque ad medium connatis ; 
petalis late obovato-subpanduratis, breviter angusteque ungui- 
culatis, apice distincte emarginatis, margine satis undulatis, 
distincte 7-nervulosis nervulis ramosissimis, sepalo dorsali 
satis longioribus; labello patenti-deflexo, sepalis lateralibus 
dimidio longiore, ambitu late subrotundato, sessili, utrinque 
glaberrimo, basi breviter lateque cuneato, inferne leviter 
trilobato, lobis basilaribus minutis, oblongo-subrotundatis, 
margine leviter undulatis, lobo terminali amplo, longiuscule 
lateque unguiculato, subsemiorbiculari, saepius leviter quadri- 
lobulato, basi late cuneato, apice profundiuscule emarginato, 
margine satis undulato-crispo, sinubus inter lobos latis sub- 
rotundatis, disco basi late cristato, crista ovata, depressa, 
acuminata, antice longe obtuseque bilobata, margine verrucosa 
tubereulisque numerosis cireumdata; columna brevi, crassa, 
glabra, alis satis patulis, membranaceis, latiusculis, quadran- 
gulis, margine integerrimis; anthera valde convexa, sub lente 
subtiliter papillosa, antice obtusa. 
Oncidium pectorale Lindl. ! Sert. Orch. tab. 39 (1840), 
in Gard. Chron. 1841. p. 6, Folia Orch., Oncid. 20; Beer, 
Prakt. Stud. Fam. Orch. 291; Duchartre, Man. Gen. des PI. 
IV. 487; Reichb. f. in Walp. Ann. Bot. VI. 729; Nichols. 
Dict. of Gard. 11. 489; Rolfe in Gard. Chron. ser. 3. II. 100 
(1887), in Orch. Rev. I. 300; Stein, Orchideenb. 424; Veitch, 
Man. Orch. Pl. VIII. 68; Hansen, Orch. Hybr. 229; Sem. 
Hortic. 1898, p. 94; Sander, Orch. Guide 189. 
Oncidium Marshalliano-Forbesii Rolfe in Orch. Rev. I. 
299 (1893). 
PSFUDOBULBI aggregati, erecti vel patuli, primum laeves, demum 
profundiuseule multisuleati, intense virides, 4—5 cm. longi, 2'/2—3 cm. 
lati. FoLia erecto-patula, basi breviter conduplicata, superne satis con- 
cava et plus minusve recurva, supra intense viridia, subtus paulo pallidiora 
et acute carinata, 15—22 cm. longa, 3—4 cm. lata; nervo mediano supra 
profunde canaliculato, subtus valde prominente; nervulis lateralibus 
numerosis, in sicco utrinque satis prominentibus. PEDUNCULUS communis 
plus minusve arcuatus, superne satis flexuosus, teretiusculus, laevis, laete 
viridis, 3—5 mm. crassus, ramis patulis, diffasis, longiusenlis, simplicibus; 
YAGINAE tenuiter membranaceae, arcte adpressae, acutae, pallide fulvae, 
circiter 1 em. longae. PEnicELLI patuli, graciles, leviter flexuosi vel sub- 
recti, cum ovario lineari acutiuscule trigono 2—2'/2 cm, longi. BRACTEAE 
membranaceae, adpressae, satis concavae, pallide virides, 3—4 mm. longae. 
SgPALA leviter concava, subtiliter 5-nervulosa, castaneo-fusca, luteo-zonata 
et marginata, dorsale circiter 1!/2 cm. longum et 8—9 mm. latum, lateralia 
17—18 mm. longa, 4—5 mm. lata, superne leviter divergentia. PETALA 
paulo concava, apice leviter recurva, paulo obliqua, castaneo-fusca, flavo 
anguste marginata et paucimaculata, 22—23 mm. longa, superne 15 ad 
17 mm. lata. LABELLUM aureo-flavum cristae tuberculis atropurpureis, 
26—98 mm. longum; lobis basilaribus 3—5 mm. longis, 2'/—3 mm. latis ; 
lobo terminali leviter convexo, distincte 5—7-nervuloso nervulis ramosis- 
simis, circiter 2 em. longo, 25—28 mm. lato. CoLumxa subrecta, clavi- 
formis, viridi-lutea, 4—5 mm. longa, alis fuscis et flavo-punctatis, circiter 
2 mm. latis. ANTHERA lutea. CaPsuLA ignota, 
Oss. Secundum cl. RoLrr (Orch. Rev. I. 299) est hybrida naturalis 
inter O. Forbesii Hook. et O. Marshallianum REICHB. F 
