311 
nervo mediano supra profunde canaliculato, subtus valde prominente; 
nervulis lateralibus paulo distinctis. PEDUNCULUS communis satis arcuatus 
et leviter flexuosus, teretiusculus, laevis, purpurascens et interdum albo- 
maculatus, 40—70 cm. longus, 1'/1—2!/s mm. crassus, ramis alternis, 
distichis, patulis, longiuseulis, simplicibus vel interdum paulo ramulosis; 
VAGINAE arcte adpressae, pallidae, 7—10 mm. longae. PepiceLLI subfili- 
formes, patentes, satis flexnosi, cum ovario lineari -clavato acutiuscule 
trigono 9—12 mm. longi. BRacTEAE adpressae, valde concavae, pallide 
virides, 2—3 mm. longae. FLores subsecundi, nutantes, unicolores, fusco- 
lutei. SepPaLA tenuiter 5-nervulosa, dorsale valde concavum, inferne 
euneatum, 13—15 mm. longum, superne 6—8 mm. latum, lateralia in 
valvam leviter concavam basi breviter attenuatam 10—12 mm. longam et 
3—4 mm. latam connata. PeraLa inferne patula, superne incurva, leviter 
concava, satis obliqua, 14—16 mm. longa, superne 6—9 mm. lata. LABELLUM 
leviter convexum, 7 —8 mm. longum, lobis basilaribus reflexis, 2—2'/ mm: 
longis, 5/4 mm. latis, lobo terminali 4—5 mm. longo, 7—8 mm. lato. 
CoLumna vix incurva, 4—5 mm. longa, alis 2 mm. longis, */—1 mm. 
latis. CAPSULA ignota. 
Var. B. BICOLOR- Regel! in Act. Hort. Petrop. X. 371 
(1887), in Gartenfl. 1888. p. 441; Stein, Orchideenb. 418; 
Kew Bull, Add. Ser. IV. 300; Nichols. Dict. of Gard., 
Suppl. 565. 
FLoRES satis minores, fusci et luteo-variegati. 
Var. 1. AUREO-MACULATUM Regel! in Act. Hort. Petrop. 
X. 370 et 371 (1887), in Gartenfl. 1888. p. 441. tab. 1279; 
Stein, Orchideenb. 418; Kew Bull., Add. Ser. IV. 300. 
Odontoglossum Lietzei var. aureo-maculatum Williams, 
Orch. Grow. Man. edit. 7. p. 573 (1894). 
PsEUDOBULBI apice saepissime diphylli. 
FLORES flavo-aurei, fusco-maculati. 
PEDUNCULUS communis 
viridis. 
Habitat in Brasilia austro-orientali loco accurato haud indicato: 
Lietze. 
17. ONCIDIUM NITIDUM Bars. Rova. pseudobulbis 
satis parvis, anguste oblongo-fusiformibus, cylindraceis, adultis 
denudatis, apice diphyllis; foliis mediocribus, coriaceis, oblongo- 
lanceolatis, acutissimis, basi longe attenuatis; pedunculo com- 
muni gracili, nutante, foliis satis longiore, inferne simplici, 
superne satis ramoso et multifloro; floribus mediocribus, 
breviuscule pedicellatis, segmentis submembranaceis; sepalis 
subaequilongis, dorsali erecto, cucullato, late obovato-obcordato, 
apice distincte emarginato, lateralibus reflexis, anguste ligu- 
latis, acutis, fere usque ad apicem connatis; petalis anguste 
obovato-obcordatis, apice oblique et distincte emarginatis, 
basi latiuscule longeque cuneatis, margine integerrimis, sepalo 
dorsali leviter longioribus; labello patenti-reflexo, sepalis late- 
ralibus satis longiore, ambitu satis longiore quam Jato, latius- 
cule breviterque unguiculato, profunde trilobato, lobis basi- 
laribus longiusculis, triangulari-lanceolatis, acutiusculis, mar- 
gine integerrimis recurvis, lobo terminali majusculo, subsemi- 
rotundato, basi subtruncato, apice leviter emarginato, margine 
leviter undulato, sinubus inter lobos latissimis profundisque, 
disco glabro, basi tricalloso, callo basilari subrotundo depresso 
nitido, mediano bifurcato, antico rotundato convexo granuloso, 
columna brevi, antice posticeque satis compressa, glabrata, 
alis late triangularibus, acutis, patulis, margine subtiliter 
ciliatis, clinandrio margine dilatato, membranaceo, late tri- 
angulari, brevissime puberulo, sinuato-subdenticulato; anthera 
valde convexa, subtiliter puberula. 
ORCHIDACEAE: ONCIDIUM. 
312 
Tabula nostra LX VIII. Fig. II (habitus eum analysi). 
Oncidium nitidum Barb. Rodr. Gen. et Spec. Orch. Nov. 
11. 193 (1882). 
PsEUDOBULBI aggregati, erecti vel erecto-patuli, recti, superne longe 
attenuati, laeves, 6—8 cm. longi, circiter 1 em. crassi. FoLra patula vel 
erecto-patula, basi subconduplicata, superne leviter convexa vel subplana, 
10—12 cm. longa, 12—16 mm. lata. PEDUNCULUS communis satis arcuatus, 
teretiuseulus, 3—4 dm. longus, ramis breviusculis, alternis, subdistichis, 
patulis, simplicibus vel leviter ramulosis. PEDICELLI patuli, graciles, 
arcuati, cum ovario 1'/s em. longi. FLORES nutantes, sepalis petalisque 
flavo-viridibus et transverse fusco-maculatis, Separa 12—14 mm. longa, 
dorsale valde concavum, basi late cuneatum, apice 10—11 mm. latum, 
lateralia satis concava, in valeam basi satis attenuatam 5—6 mm. latam 
connata. PETALA erecta, leviter concava, satis obliqua, 16—17 mm. longa, 
apice circiter 1 cm. lata. LABELLUM aureo-flavum callis fuscis, inferne 
satis convexum, apice leviter convexum et valde recurvum, 16—17 mm. 
longum, lobis basilaribus erectis, 3—4 mm. longis, 11/2 mm. latis, lobo 
terminali 6—7 mm. longo, basi 11—12 mm. lato. CoLUMNA vix incurva, 
lutea, 6—7 mm. longa. CapsuLa ignota. — Species mihi haud visa; 
descript, ex op. supra cit. et ex icon. a cl. BARB. RoDR. communic. 
Habitat in sylvis supra arbores ad Rodeio prov. Rio de Janeiro: 
Barbosa Rodrigues. — Floret Septembri. 
18. ONCIDIUM WIDGRENI Liwpr. pseudobulbis 
satis parvis, anguste oblongo-subfusiformibus, paulo com- 
pressis, basi primum vaginis paucis majusculis tenuiter 
membranaceis acutisque vestitis demum  denudatis, apice 
monophyllis; foliis mediocribus, satis coriaceis, anguste ob- 
longo-lanceolatis, apice acutis vel breviter acuminatis, basi 
longiuscule attenuatis fere petiolatis; pedunculo communi 
gracillimo, ascendente vel nutante, foliis multo longiore, inferne 
simplici vaginis paucis brevibus tenuiter membranaceis remotis- 
simis acutisque vestito, superne leviter ramoso et laxiuscule 
pluri—multifloro; bracteis brevissimis, tenuiter membranaceis, 
ovato-oblongis, obtusiusculis; floribus mediocribus, breviuscule 
pedicellatis, segmentis tenuiter membranaceis; sepalis inferne 
patulis, superne satis incurvis, dorsali anguste obovato-sub- 
triangulari, apice leviter emarginato, basi longiuscule ungui- 
culato, lateralibus paulo brevioribus, anguste oblongo-sub- 
spathulatis, apice subrotundatis, inferne fere usque ad medium 
connatis; petalis anguste obovato-triangularibus, apice leviter 
emarginatis, basi anguste longeque unguiculatis, margine 
leviter undulatis, subtiliter 7-nervulosis, sepalo dorsali paulo 
longioribus; labello inferne erecto-patulo, superne satis recurvo, 
sepalis lateralibus satis longiore, ambitu satis longiore quam 
lato, longe angusteque unguiculato, profunde trilobato, lobis 
basilaribus elongatis, linearibus, obtusis, margine integerrimis, 
lobo terminali majusculo, late rotundato-subreniformi, basi 
subtruncato, apice retuso, margine leviter undulato, sinubus 
inter lobos latiusculis profundisque, disco glabro, secus unguem 
et usque ultra medium tuberculis longiusculis crebris biseriatis 
aucto; columna brevi, antice posticeque satis compressa, sub- 
tiliter puberula, alis longiusculis, linearibus, obtusis, patentis- 
simis, apice incurvis, margine subtiliter ciliatis, clinandrio 
margine dilatato, membranaceo, rotundato, brevissime ciliato; 
anthera convexa, subtiliter puberula, antice brevissime bicor- 
nuta, cornibus fimbriatis. 
Tabula nostra LX VIII. Fig. I (habitus cum analysi). 
