i'2 



VI. 



Leptotet bicolor. 

 Dehiscent fruit. 



Citprlpedium. Diagram. 



Cypripedlum. 

 Gynostogium seen in profile. 



if il Ionia. 

 Germinating seed (mag.). 



Ltptotes bicolor. 

 Diagram of fruit. 



Perennial herbaceous terrestrial PLANTS, or epiphytes, or parasites? (Epipo- 

 giurti, Corallorhiza, Neottia Nidus-avis), sometimes sarmentose and furnished with 

 adventitious roots (Vanilla), sometimes marsh plants (Liparis, Malaxis) ; rhizome 

 creeping, or with fascicled fibrous roots, often accompanied with ovoid or palmate 

 tubercles, caulescent or stemless ; leaves often connate at the base, and forming with 

 the thickened stem an oblong swollen or flattened organ (pseudo-bulb). STEM or 

 SCAPE usually simple, cylindric or angular, often aphyllous, or furnished with scales. 

 LEAVES : the radical and lower cauline close together, the upper equitant, alternate 

 or opposite, sheathing, glabrous, rarely velvety (Eria), fleshy or membranous, cylin- 

 dric, linear or linear-lanceolate, usually entire or emarginate (Vanda), or flabelliform 

 (Pogonia), or cordate (Neottia); nerves parallel, rarely reticulate (Ancectochilus), 

 sometimes gemmiparous (Malaxis paludosa, Spiranthes gemmipara). FLOWERS $ ,or 

 imperfect by arrest, terminal, solitary or in a spike raceme or panicle, and bracteate, 

 sometimes springing from the middle of a leaf (Pleurothallis) . PERIANTH superior, 

 usually petaloid, irregular, formed of C 2-seriate free or coherent persistent or 

 caducous leaflets ; the outer (sepals) 3, of which 2 are lateral and 1 inferior, usually 

 becoming superior by the torsion of the pedicel or ovary ; the inner (petals) 3, alter- 

 nating with the sepals, the 2 lateral similar, and the third (labellum) originally 

 superior, then becoming inferior, usually dissimilar, larger, very various in shape 



