flowered or rarely few-flowered on a fractiflex rachis. The 
leaves are oblong-ovate, acute or rounded at apex and witha 
conduplicate petiole. 
KEY TO SPECIES 
Inflorescence many-jointed, covered with adpressed, chartaceous 
sheaths; petals larger than sepals .................... QO. Harlingii 
. Inflorescence without joints or sheaths; petals more or less similar to 
BEERS. ikea aes 6 owt AS ees eee eee bee eee ewe Bes 2 
Leaves rounded at apex; column wings quadrate, entire; clinandrium 
OTE VOU esate Parnas Ca dd hs CERO VA Ee EEA OEE A 3 
. Leaves pointed at apex; column wings serrate; clinandrium strongly 
i NE oc se ee oe ee oa Boe eens aes eee ey oun 4 O. serpens 
Midlobe of lip sessile, overlapping lateral sepals ........ O. Scansor 
. Midlobe of lip produced from an elongate isthmus, exposing lateral 
SOUS 4 ccc eaey Eis hae GORY Ree cas be Nae ee eae O. globuliferum 
SYSTEMATICS OF SPECIES 
Oncidium globuliferum H.B.K., Nov. Gen. et Sp. Pl. 1: 347, 
1816. 
Type: Colombia; Dept. Cauca, near Lake Timbio, Hum- 
boldt 2072! (P). 
Syn.: Oncidium convolvulaceum Lindl. in Lindl. & Paxt., 
Fl. Gard. 1: 102, 1850. 
Type: Venezuela; without precise locality, Funck & Schlim 
1444! (K-L). 
Oncidium globuliferum var. costaricense Rchb.f. in 
Gard. Chron. 1678, 1871. 
Type: Costa Rica; without precise locality, Zahn 149! (W). 
Oncidium Wercklei Schltr. in Fedde, Rep. Beih. 19: 
68, 1923. 
Type: Costa Rica; San Jeronimo, Werckle 46! (AMES). 
Observation: Sepals up to 15 mm. long, 5 mm. wide, obo- 
vate-oblong, slightly clawed at the base; lateral sepals free and 
slightly narrower. Petals subsimilar, up to 15 mm. long and 6 
mm. wide. Lip is conspicuous, 3-lobed; basal lobes small, 
57 
