ORCIIIDACEAE, 



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 S(tem not sub- 

 tended by a foliaceous spathe. 

 Column adnate to abont the 

 middle : lip obscurely 3-lobed, 

 with a minute middle lobe and 

 broad and short lateral lobes : 

 pseiidobulbs flattened : flower- 

 ing stem subtended by a foli- 

 aceous spathe. 

 Lip entire, clamshell-like, neither 

 crested nor appendaged : sepals 

 and petals elongate, attenuate. 

 Leaves plaited : lip bearded. 

 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. 

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

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

 caudiculae, but with short stipes. 

 Lip contracted into a claw : foot of the column 

 slender : epiphytic plants with long pseu- 

 dobulbs. 

 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 .S-lobed, the lateral 

 lobes widely spreading : foot of the 

 column concave and grooved, not dilated, 

 the margins thick. 

 Lip with a crest of nipple-like papillae, 

 shallowly .3-lobed : foot of the column 

 flat, thin and dilated, the margins thin. 

 Leaves duplicate in the bud. 



Anther upright : lip with a narrow middle lobe. 

 Anther inclined : lip with a dilated middle lobe. 



10. Encyclia. 



20. Epicladidm. 



21. Anacheilidm. 



22. LiMODORUM. 



23. Bletia. 



24. Cyrtopodium. 



2'). Triorchos. 



26. Platypus. 



27. Macradenia. 



28. Oncidium. 



1. H. quinqueseta. 



2. H. repens. 



1. HABENARIA 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. quinqueseta (Miehx.) 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 louger thau 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. 



