460 ORCHIDACEJE. (ORCHIS FAMILY.) 



crenulate at the apex and bearing a tooth-like appendage at the throat ; spur 

 club-shaped, mostly shorter than the short ovary. (Orchis flava, L. 0. fuces- 

 cens, and O. bidentata, Ell.) Low shady banks, Florida, and northward. July 

 and Aug. Stem 1 high. Flowers 2" in diameter. 



3. P. bracteata, Torr. Lower leaves obovate, the others smaller, lanceo- 

 late ; flowers small, greenish ; sepals and narrow petals erect ; lip oblong-linear, 

 slightly 3-toothed at the tip, longer than the obtuse sac-like spur. (Orchis 

 viridis, Pursh.) High mountains of Carolina, Pursh. Stem low. Bracts 

 large, conspicuous. 



* * * Lip undivided, fringed: flowers spiked : stems leafy. 



4. P. ciliaris, Lindl. Leaves numerous, the lower ones (4' -12' long) 

 lanceolate or oblong, the upper small and bract-like : spikes oval or oblong, 

 rather loosely flowered; flowers large, bright yellow; lateral sepals round- 

 obovate, reflexed ; petals lanceolate, incised or slightly fringed at the apex ; lip 

 clawed, roundish in outline, long-fringed ; spur filiform, commonly longer than 

 the long tapering ovary. (Orchis ciliaris, L.) Var. BLEPHARIGLOTTIS (Or- 

 chis blephariglottis, Wittd.) has white flowers, and shorter fringe of the lip. 

 Swamps and bogs, chiefly in the pine barrens, Florida, and northward. Aug. 

 Stem l - 2 high. Spike l' -2' in diameter. Ovary 9" - 15" long. Flow- 

 ers 6" -8" wide. 



5. P. cristata, Lindl. Leaves numerous, the lower ones (4' -8' long) 

 lanceolate, the uppermost bract-like ; spike oblong or cylindrical, densely flow- 

 ered ; flowers small, yellow ; lateral sepals rounded, spreading, concave ; petals 

 oblong, incised at the apex ; lip sessile, ovate in outline, pinnatifid-fringed ; spur 

 filiform, half as long as the tapering ovary. (Orchis cristata, Michx.) Bogs 

 and, swamps, Florida, and northward. Aug. Stem l-2 high. Spike 1' in 

 diameter. Ovary 5" - 6" long. Flowers 2"- 3" wide. 



# # # # Lip 3-parted, fringed or denticulate : flowers in spiked racemes : stem leafy. 

 Flowers yellowish-white. 



6. P. lacera, Gray. Stem slender; lower leaves oblong, the uppermost 

 small, passing into the lanceolate bracts ; raceme oblong, loosely flowered ; pet- 

 als oblong-linear, entire ; lip pendent, the wedge-shaped lobes deeply divided 

 into few spreading capillary filaments; spur as long as the ovary. (Orchis la- 

 cera, Michx.) Swamps and low ground in the upper districts, and northward. 

 July. Stem 1 - 2 high. Lower leaves 3' - 6' long. Raceme 3' - 5' long. 



- +- Flowers purple : lip clawed. 



7. P. psycodes, Gray. Stem stout ; lower leaves lanceolate or oblong, 

 the upper small, passing into the linear-subulate bracts ; flowers pale purple, 

 crowded in a dense oblong raceme ; lateral sepals roundish, obtuse ; petals obo- 

 vate, minutely denticulate at the apex ; lip nearly twice as long as the sepals, 

 spreading, the wedge-shaped lobes bordered with a short fringe. (Orchis psy- 

 codes, L.) Swamps and shaded banks, North Carolina, and northward. July. 

 Stem 2 high. Lower leaves 3' - 6' long. Flowers very numerous. Lip 

 2" -3" long. 



