OpJirydca\~\ CXLVIII. ORCHIDE.E. (J. D. Hooker.) 67 f > 



Subtribe 2. HABENARIEJE. 



105. HEEMIRIUM. Lip not spurred. Low small-fld. herbs. 



106. HABENARIA. Lip spurred. Sepals equalling or exceeding the petals. 

 Flowers spicate or racemose. Itostelluni not elongate. 



107. DIPLOMERIS. Lip spurred. Sepals much smaller than the petals. Flowers 

 solitary, large. 



108. HEMIPILIA. Lip spurred. Sepals larger than the petals. Leaf radical, 

 solitary ; raceme few -fid. Rostellum very prominent. 



Subtribe 3. DISE.E. 



109. SATYRIUM. Lip erect, 2-spurred. Flower spicate. 



Subtribe 4. CORYCIE.ZE. 



110. DISPERIS. Lateral sepals spurred or saccate. Lip not spurred, tip 2-lippod 

 or variously dilated. 



THIBE V. Cypripedieae. 



111. CYPRIPEDITTM. Sepals spreading. Lip inflated. Anthers 2. Ovary 

 1-celled. Flowers large. 



112. APOSTASIA. Sepals, petals and lip all similar. Anthers 2. Ovary 

 3-celled. Flowers small. 



113. NEUWIEDIA. Sepals and petals similar. Lip rather broader.. Anthers 3. 

 Ovary 3-celled. Flowers small. 



TRIBE I. EPIDENDEE2E (see p. 667). 



1. OBXZRONXA, LindL 



Tufted epiphytes. Leaves distichous, equitanir, ensiform- (very rarely 

 terete). Flowers very minute in dense subcylindric spikes or racemes. 

 Sepals broadly ovate or oblong, subequal. Petal* smaller. Lip sessile, 

 concave, entire or 2-4-lobed. Column very short ; anther terminal, in- 

 cumbent ; pollinia 4, waxy, cohering by a viscus. Species about 60, 

 Tropical Asiatic, Australian and Pacific. 



The flowers are generally 2 to each bract, which is lanceolate and free or broader 

 and more or less convolute, sometimes very broad and forming a tube round both 

 flowers ; the upper flower has often a sheathing obtuse bractenle. The genus wants 

 a careful study of living specimens. 1 am far from satisfied with the following 

 delimitation of species, the specimens- being in some cases quite insufficient for a sure 

 diagnosis. 



Sect. I. Oberonia PROPER,-. Stem very short, rarely 2-4 in. Leaves 

 ensiform, chiefly radical or subradical. Sepals subequa-1. 



* Side lobes or all the lobes of lip deeply toothed or lacimate. 



1. O. iridifolia, LindL Gen. $ Sp. Ore A id. 15; Fol. Orel id. 

 Oleron. 1 ; stem short, leaves 3-5 in. broadly ensiform, spike long slender 

 decurved, flowers not whorled sessile, bracts broad erose convolute sheathing 

 the ovary, petals oblong erose, lip more or less quadrate deeply toothed 

 tip broadly 2-fid. Wall. Cat. 1948/2 (in part). Malaxis iridifolia," Keichb.f. 

 in Walp. Ann. vL 208. 



