OKCHIDACEAE. 



51 



Column adnate at the base : lip 

 deeply 3-lobed, with a dilated 

 middle lobe and long and nar- 

 row lateral lobes : pseudobulbs 

 terete : flowering stem not sub- 

 tended by a foliaceous spathe. 19. ENCYCLIA. 

 Column adnate to about the 

 middle : lip obscurely 3-lobed, 

 with a minute middle lobe and 

 broad and short lateral lobes : 

 pseudobulbs flattened : flower- 

 ing stem subtended by a foli- 

 aceous spathe. 20. EPICLADITJM. 

 Lip entire, clamshell-like, neither 

 crested nor appendaged : sepals 

 and petals elongate, attenuate. 21. ANACHEILIDM. 

 Leaves plaited : lip bearded. 22. LIMODORUM. 

 Flowering stem lateral. 



Leaves convolute in the bud. 



Lip surrounding the column or adnate to it, with- 

 out a sac : pollinia 4 or 8, with caudicaulae, 

 but without stipes. 23. BLETIA. 



Lip articulate to the foot of the column, or form- 

 ing with it a spur : pollinia 2 or 4, without 

 caudlculae, but with short stipes. 

 Lip contracted into a claw : foot of the column 

 slender : epiphytic plants with long pseu- 

 dobulbs. 24. CYRTOPODITJM. 

 Lip sessile, the base truncate or cuneate : foot 

 of the column dilated or abruptly nar- 

 rowed at the base : terrestrial plants 

 without pseudobulbs. 



Lip crestless, deeply 3-lobed, the lateral 

 lobes widely spreading : foot of the 

 column concave and grooved, not dilated, 

 the margins thick. 25. TRIORCHOS. 



Lip with a crest of nipple-like papillae, 

 shallowly 3-lobed : foot of the column 

 flat, thin and dilated, the margins thin. 26. PLATYPUS. 

 Leaves duplicate in the bud. 



Anther upright : lip with a narrow middle lobe. 27. MACRADENIA. 

 Anther inclined : lip with a dilated middle lobe. 28. ONCIDIUM. 



1. HABENAKIA Willd. Caulescent herbs. Spike erect. Perianth white 

 or colored. Sepals distinct or nearly so, the lateral ones spreading, slightly 

 inequilateral. Petals unequally 2-parted. Lip 3-parted, spurred. Anther- 

 sacs elevated, each with an appendage at the base. Stigma with narrow ap- 

 pendages, the glands naked. 



Spur much longer than the ovary : lip over 15 mm. long. 

 Spur about as long as the ovary : lip less than 10 mm. long. 



1. H. quinqueaeta. 



2. H. repens. 



1. H. quinqueseta (Michx.) C. Mohr. Stems 2-5 dm. tall: leaf -blades oblong 

 to oblong-lanceolate, 4-10 cm. long: lateral sepals oblong-ovate 8.5-10 mm. 

 long: narrow lobe of each petal somewhat longer than the narrowly oblong or 

 linear-oblong broader one: middle lobe of the lip linear-spatulate. Pinelands. 

 F. K. 



2. H. repens Nutt. Stems 3-6 dm. tall: leaf -blades oblong-lanceolate to 

 linear-lanceolate, 5-30 cm. long: lateral sepals ovate, about 5 mm. long, obtuse: 

 narrow lobe of each petal slightly longer than the obtuse oblong broader one: 

 middle lobe of the lip narrowly linear. Everglades. (Cuba, Ant.) 



2. HABENELLA Small. Caulescent herbs. Spike erect. Perianth yel- 

 lowish, becoming green. Sepals distinct, the lateral ones spreading, very 

 inequilateral. Petals much smaller than the sepals, sinuately lobed at the 

 apex and with a small basal lobe. Lip entire, with 2 small basal lobes. 

 Anther-sacs with filiform appendages at the base. Stigma with a short 

 appendage, the glands naked. 



