ORCHIDACEM 11 



OBERONIA, Lindl. 



O. iridifolia, Lindl., Orch. PL 15 (1830). — Cymhidium iridi- 

 folium, Roxburgh, Fl. Ind. 3: 458 (1832) : "Parasitic, stemless. 

 Leaves bifarious, ensiform. Spikes filiform, drooping. Flowers 

 sub-verticelled. Lip round-reniform, laciniate. 



" A very elegant species, found growing on trees in the forests 

 of Silhet ; it flowers during the cold season. Here the spikes are 

 solitary from the bosom of the exterior leaf, supported in a pretty 

 long, two-edged peduncle. The flower-bearing part drooping and 

 crowded in a somewhat verticelled form, with innumerable, very 

 minute, beautiful yellow flowers ; the five petals oval, and nearly 

 equal ; the lip two-lobed, roundish-renif orm, with the whole of the 

 margin deeply jagged, and the inside tomentose." 



Leaves broadly ensiform, acute, 5-24 cm. long, 1-3 cm. wide, 

 equitant. Inflorescence longer than the leaves, decurved. Pedun- 

 cle winged, much shorter than the elongated, densely flowered, 

 cylindrical spike. Floral bracts minute, elliptic, erose-ciliate. 

 Flowers very small, subverticillate. Sepals and ]3etals nearly 

 equal, reflexed, the latter erose-margined, the former entire. Lip 

 undivided, emarginate or indistinctly 3-lobed, pectinate-erose. 

 Column minute. Flowers yellowish or greenish, about 2 mm. 

 long. A variable species. 



Lamao River, Prov. Bataan, Luzon, January, 1904, P. T. 

 Barnes (no. 130). 



O. cylindrica, Lindl., Bot. Reg. 1840, Misc. 20 : " spica densa 

 cylindracea, bracteis canaliculatis subciliatis, sepalis petalisque 

 reflexis intus labelloque cordato truncato fimbriate pubescenti- 

 bus." 



Leaves up to 14 cm. long, about 1 cm. wide, falcate, ensiform, 

 acute, equitant. Raceme about 11 cm. long, longer than the 

 peduncle, cylindrical, exceeding the leaves. Flowers somewhat 

 verticillate, pedicellate. Floral bracts lanceolate, acute, margins 



