321 ORCHIDACEAE: ONCIDIUM. 322 
parvis, ovato-triangularibus, acutis, margine satis undulatis, 
lobo terminali magno, anguste obovato-triangulari, apice plus 
minusve distincte emarginato, basi late cuneato, margine vix 
undulato, sinubus inter lobos latissimis, disco basi late calloso, 
callo carnoso, mesenteriformi; columna brevi, satis gracili, 
glabra, alis brevissimis, latissime rotundatis, margine integer- 
rimis; anthera valde convexa, laevi, apice leviter sulcata. 
Tabula nostra LXXVIII. Fig. I (habitus cum analysi). 
Oncidium Hookeri Rolfe! in Gard. Chron. ser. 3. II. 520 
(1887); L'Orchidoph. 1888. p. 7; Nichols. Dict. of Gard. IV. 
579, Suppl. 565; Kew Bull., Add. Ser. IV. 298; Sander, Orch. 
Guide 182. 
Oncidium raniferum var. major Hook. in Bot. Mag. 
tub. 3712 (1839); Lemaire, Fl. des Serr. de l'Angl., mars 
1839 cum tab. col. 
RADICES numerosae, dense fasciculatae, elongatae, graciles, flexuosae, 
simplices vel satis ramosae, canescenti-cinereae. PSEUDOBULBI aggregati, 
erecti vel erecto-patuli, satis arcuati vel subrecti, superne saepius longe 
attenuati, nitidi, intense virides interdum fusco-maculati, primum laeves 
demum profunde plurisulcati, 3—6 cm. longi, inferne 8—16 mm. lati. 
FoLia erecta vel erecto-patula, basi breviter subconduplicata, superne plus 
minusve concava et leviter recurva, supra intense viridia, subtus satis 
pallidiora, 8—20 cm. longa, 5—14 mm. lata; nervo mediano supra pro- 
fundiuscule canaliculato, subtus valde prominente; nervulis lateralibus 
satis numerosis, gracillimis, in sicco utrinque vix prominentibus. PEpux- 
CULUS communis plus minusve. flexuosus, inferne teretiusculus vel leviter 
compressus, superne obtuse. angulatus, laete viridis, 20—35 cm, longus, 
1—2'/2 mm. crassus, ramis patentissimis, elongatis, gracillimis, paulo 
flexuosis, simplicibus vel interdum satis ramulosis; vAGINAE arcte adpressae, 
pallide virides, subtiliter multinervulosae, margine anguste scariosae, 
4—12 mm. longae. PeDICELLI patentissimi, capillares, recti vel paulo 
arcuati, cum ovario filiformi-clavato obscure trigono 4—8 mm. longi. 
BRACTEAE patulae, satis concavae, acuminatae, 1—2 mm. longae. FLORES 
patenti-nutantes, sepalis petalisque flavo-viridibus, maculis paucis purpureo- 
fuscis ornatis. SkPALA basi satis attenuata, subtiliter trinervulosa, 4 ad 
4'/; mm. longa, 1'/» mm. lata, dorsale valde concavum, lateralia subplana, 
‘ superne satis divergentia. PETALA paulo concava, leviter obliqua, inferne 
longe attenuata, 4'/2 mm. longa, superne 15/4—2 mm. lata. LABELLUM 
plus minusve convexum, flavum callo aurantiaco, 6—7 mm. longum, lobis 
basilaribus subreflexis, tenuiter trinervulosis, 2 mm. longis, basi 1'/» mm. 
latis, lobo terminali subtiliter 5-nervuloso, 4—4'/2 mm. longo, superne 
3—31/a mm. lato. CoLumna subrecta, flavo-viridis, 2—2'/» mm. longa. 
Carsura ignota. 
Habitat in prov. Rio de Janeiro: H. Longman, Glaziou n. 15644 
et 17261; in rupibus ad Petropolis prope Cachambá : Glaziou; ad Serra 
dos Orgáos: Gardner n. 637; in sylvis supra arbores ad Campos das 
Antas prope Therezopolis: H. Schenck n. 2789. — Floret Februario— Maio. 
27. ONCIDIUM CHRYSOTHYRSUS Recone. F. pseudo- 
bulbis mediocribus, oblongis, satis compressis, apice diphyllis ; 
foliis majusculis, coriaceis, oblongis, acutis; pedunculo com- 
muni robustiusculo, erecto, foliis multo longiore, inferne 
simplici vaginis paucis membranaceis brevibus acutiusculis 
remotissimisque vestito, superne satis ramoso et dense valde 
multifloro; bracteis rigidiuseulis, ovato-oblongis, acuminatis, 
ovario multo brevioribus; floribus mediocribus, breviuscule 
pedicellatis, . sepalis petalisque patento- -subrecurvis, tenuiter 
membranaceis; sepalis acutissimis, dorsali oblongo-lanceolato, 
lateralibus dimidio longioribus, anguste ligulatis, inferne fere 
nsque ad medium connatis; petalis oblongo- -lanceolatis, acutis- 
simis, subtiliter trinervulosis, margine paulo undulatis, sépalo 
dorsali satis brevioribus; labello patenti-subdeflexo, sepalis 
lateralibus dimidio longiore, sessili, utrinque glaberrimo, 
ambitu late obovato, basi leviter cordato, profunde trilobato, 
lobis basilaribus parvis, subretrorsis, late ovatis, apice rotan- 
datis, margine integerrimis, lobo terminali magno, longiuscule 
et angustiuscule unguiculato, late reniformi-subquadrangulo, 
basi subtruncato, margine leviter undulato, apice profundius- 
cule lateque emarginato lobulis apicalibus obtusis, disco basi 
longiuscule cristato, crista carnosa, valde elevata, antice 
dilatata, lateraliter valde compressa, basi apiceque utrinque 
verruculosa, verrucis aliisque minutis circumstantibus; columna 
breviuscula, crassiuscula, glaberrima, alis latiusculis, mem- 
branaceis, anticis, apice obtuse prominentibus, margine integer- 
rimis; anthera valde convexa, laevi, apice obscure sulcata. 
Oncidium chrysothyrsus Reichb. f. ex Warner, Bel. Orch. 
II. tab. 5 (1865); Gard. Chron. 1867. p. 264; Du Buyss. 
L Orchid. 418; Nichols. Dict. of Gard. II. 484; Stein, Orchideenb. 
408; Bois, Orch. 150; Williams, Orch. Grow. Man. edit. 7. 
p. 604; Sander, Orch. Guide 176. 
PseupoBuLsi aggregati, pallide virides, primum laeves, demum 
multicostati costis alatis flexuosisque, 4—7 cm. longi, 1'/2—2'/ cm. lati. 
Forra laete viridia, circiter 20 cm. longa. PxpuxcuLUS communis satis 
flexuosus, teretiusculus, 5 —9 dm. longus, 3—6 mm. crassus, ramis brevius- 
culis, patulis, gracilibus, flexuosis, simplicibus; vasınar arcte adpressae, 
pallidae, '/s—1 cm. longae. PeDICELLI patentissimi, subfiliformes, satis 
arcuati, cum ovario lineari-clavato acutiuscule trigono circiter 1 em. longi. 
BRACTEAR satis concavae, 3—4 mm. longae. Fıores nutantes, sepalis 
petalisque pallide viridibus, transverse rubro-vittatis. Serata apice leviter 
incurva, subtiliter trinervulosa, 2’/ mm. lata, dorsale valde concavum, 
5'/a—6 mm. longum, lateralia leviter concava, 9 mm. longa, superne paulo 
divergentia. PkTALA apice recurva, leviter concava, paulo obliqua, basi 
satis attenuata, 4'/:—5 mm. longa, 2 mm. lata. LasELLUM subplanum, 
flavo-aureum, basi purpureo-paucilineatum, 15 mm. longum, lobis basi- 
laribus 3—3!'/s mm. longis et 2—2'/» mm. latis, lobo terminali tenuiter 
multinervnloso nervulis dichotome leviter ramosis, 10 mm. longo, 15 mm. 
lato. Corumna paulo incurva, 6 mm. longa, clinandrio postice acuto, alis 
1'/2—2 mm. latis. CaPsura iguota. 
E Brasilia in hortis culta. 
98. ONCIDIUM VIPERINUM Lisor. pseudobulbis 
satis parvis, anguste oblongis, satis compressis, obscure qua- 
drangulis, basi junioribus vaginis paucis distichis majusculis 
subeoriaceis interdum foliaceis vestitis, vetustioribus denu- 
datis, apice diphyllis; foliis mediocribus, subcoriaceis, lineari- 
ligulatis, apice acutis, basi longe attenuatis ; pedunculo com- 
muni gracili, erecto vel nutante, foliis satis longiore, inferne 
simplici vaginis 1—2 brevissimis subcoriaceis acutisque vestito, 
superne leviter ramoso laxiuscule plurifloro; bracteis subcoria- 
ceis, triangulari-lanceolatis, ovario multo brevioribus; floribus 
mediocribus, breviuscule pedicellatis, segmentis tenuiter mem- 
branaceis, patenti-reflexis; sepalis acutis, dorsali late oblongo, 
lateralibus satis longioribus, oblongo-lanceolatis, basi breviter 
connatis; petalis oblongis, acutis, subtiliter 5-nervulosis 
nervulis exterioribus brevibus, margine valde undulatis, sepalo 
dorsali vix longioribus; labello patulo, sepalis lateralibus paulo 
longiore, sessili, utrinque glaberrimo, ambitu obovato-rotun- 
dato, basi subrotundato, distincte trilobato, lobis basilaribus 
