316 OECHIDACEAE 



lateral sepals ovate to oval, 2-3.5 mm. long: petals 3-4 mm. long, sinuately 3-lobed: 

 lip slightly dilated upward, 3-5 mm. long: capsules 7-8 mm. long. 



In low grounds, Newfoundland to Minnesota, Florida and Louisiana. Fkog-spike. 



2. Gymnadeniopsis nivea (Nutt.) Eydb. Stems 2-5 dm. tall: leaves reduced 

 on the upper part of the stem, the lower ones with linear or linear-oblong blades 

 5-20 cm. long: perianth white or pink: lateral sepals ovate or oblong-ovate, 4-6 mm. 

 long: petals 3-4.5 mm. long, curved, the tip oblique: lip linear or linear-lanceolate, 

 5-7 mm. long, entire: spur about 1 em. long: capsules 9-11 mm. long. 



In pine lands and on hillsides, Delaware to Florida and Mississippi. Also in Cuba. 



3. Gymnadeniopsis Integra (Nutt.) Eydb. Stems 3-6 dm. tall: leaves much 

 reduced on the upper part of the stem, the lower ones with broadly linear or linear- 

 lanceolate blades 5-20 cm. long: perianth yellow or orange-yellow: lateral sepals 

 ovate to obovate, 3-4 mm. long: petals 3-3.5 mm. long, oblong or nearly so: lip 

 oblong to ovate-oblong or oval, 4-4.5 mm. long, erose or crenulate: spur 4-5 mm. 

 long: capsules fully 10 mm. long. 



In pine-land swamps. New Jersey to Florida and Louisiana. 



11. POGONIA Juss. 



Caulescent herbs, with cord-like roots. Leaves mostly solitary or 2 on the stem. 

 Flowers solitary or 2 together. Perianth mainly pink, rose or lilac. Sepals nearly 

 equal, slightly longer than the petals. Petals broader than the sepals. Lip fringed 

 or crisped near the apex, crested, not lobed. Capsule erect. 



Lip rounded at the fringe-bearded apex, 19-23 mm. long: column 8-10 mm. long. 1. P. ophioglossoides. 

 Lip narrowed at the entire apex, 31-34 mm. long: column 18-21 mm. long. 2. P. divaricata. 



1. Pogonia ophioglossoides (L.) Ker. Stem 2-5 dm. tall: blades of the 

 cauline leaves oblong-lanceolate to elliptic, 3-8 cm. long: lateral sepals linear-elliptic 

 or narrowly oblong, 15-20 mm. long, acute: petals elliptic or oblong-cuneate, 14-16 

 mm. long, obtuse: lip longer than the petals, blunt at the rounded apex. 



In swamps, Newfoundland to Ontario, Kansas, Florida and Alabama. Spring. 



2. Pogonia divaricata (L.) E. Br. Stem 2-6 dm. tall: blades of the cauline 

 leaves narrowly oblong to oblong-lanceolate, 5-15 cm. long: lateral sepals linear 

 or nearly so, 26-50 mm. long, attenuate: petals narrowly elliptic to elliptic-oblanceo- 

 late, 20-35 mm. long, acuminate: lip as long as the petals, acuminate above the 

 middle, entire. 



In moist soil. New Jersey to Florida and Alabama. Summer. 



12. TRIPHORA Nutt. 



Caulescent herbs, with fleshy tubers. Leaves several, with relatively broad blades. 



Mowers nodding, several, axillary to leaf-like bracts. Perianth mainly purple. 



Sepals nearly equal, about as long as the petals. Petals about as broad as the sepals, 



. but narrower at the base. Lip dilated above the claw, prominently 3-lobed, crestless. 



Capsules drooping. Nodding-cap. 



1. Triphora trianthdphora (Sw.) Eydb. Stems 5-30 cm. tall: leaf -blades sub- 

 orbicular to ovate, 5-20 mm. long: flowers nodding: lateral sepals linear-oblong or 

 linear-elliptic, 13-15 mm. long: lip 12-14 mm. long, the claw shorter than the blade: 

 capsules 10-14 mm. long. 



In woods, Maine to Wisconsin, Kansas and Florida. Summer. 



13. CARTERIA Small. 



Caulescent herbs, with clustered fleshy tubers. Leaves various, the basal ones 

 with firm narrow plicate blades, the cauline mere sheathing scales. Flowers erect, 

 several, axillary to scale-like bracts. Perianth colored. Sepals nearly equal, longer 

 than the petals. Petals decidedly narrower than the sepals. Lip short, sessile, 

 slightly 3-lobed at the apex, with 5 longitudinal crests. Capsules erect. 



