ORCHIDACE.^ 



ceolata, obtusa. Sepalum dorsale ovatum, late obtusum. Petala 

 obliqua, semiovata, parte basali anteriore in auriculam extensa. 

 Labellum integrum, oblongo-lineare, calcari subaequale. Gyno- 

 stemium breve, latum. 



Roots few, about 4 mm. thick, tuberous with short tubers. 

 Stem, including the inflorescence, 23 cm. or more long, becom- 

 ing suberect from a decumbent base, provided with five or more 

 sheathing leaves. Leaves up to 3.8 cm. long, 1.7 cm. wide, lance- 

 ovate to lanceolate, more or less appressed, sharply acuminate, 

 clasping below, the mid-nerve prominently sulcate on the upper 

 surface and carinate beneath, the uppermost leaves gradually 

 reduced in size. In the dry state all leaves resemble spreading 

 sheaths. Floral bracts similar to the leaves, 1-1.8 cm. long, lan- 

 ceolate, very long acuminate, about three-nerved, either shorter 

 than, equal to, or longer than the ovaries. Flowers ten or less, 

 forming a loose raceme up to 12 cm. long. Sepals pellucid, petals 

 less so, lip very thick and fleshy. Lateral sepals about 8 mm. long, 

 3 mm. broad below the middle, falcate-lanceolate, rounded at the 

 apex, the three nerves keeled on the dorsal surface, the lateral 

 nerves somewhat abbreviated. Dorsal sepal ovate, about 6.3 mm. 

 long, 4 to 4.4 mm. wide below the middle, strongly three- 

 nerved, the nerves prominently keeled on the dorsal surface, 

 nerves not reaching the broadly rounded apex. Petals obliquely 

 semi-ovate, ±6.5 mm. long, 2.5-3 mm. broad, obtuse or subacute, 

 two-nerved, the anterior basal portion extended into an auricle 

 characteristic of this section. Lip about 9.5 mm. long, 2.5 mm. 

 broad, simple, oblong-linear, reflexed, very thick and fleshy es- 

 pecially down the center, abruptly narrowed to an obtuse apex, 

 equaling or slightly shorter than the spur. Spur ±1 cm. long, 

 curved, cylindric, parallel with the lip. Column broad, about 3.5 

 mm. long. 



