Obms 138.— ORCHIDACE^ 686 



12 P. Idcera Gray. RAaaEo Orchis. Lower ks. oblong, obtuse, upper ones 

 narrow, acuminate; bracts longer than the flowers; sep. reluae; pet. emarginate; 

 Up 3-partcd, segments cuneato, oapillaceous-multifld ; spur fitiform, clavaie, an 

 long as the ot<wj/.— Swamps and meadows, Can. to Car. Stem 1 — 2f high, smooth, 

 slender. Leaves few, 3 — 6' by J to ]', mostly acute. Mower numerous, in a 

 long, loose spike, of a greenish-white, not showy. Sepals ovate. Petals oblongs 

 linear, entire, lip rgflexed, very deeply laciniate. Readily distingiushed from the 

 following by its more slender habit, -groenish flowers, and the entire (not fringed) 

 {letals. July. 



13 P. leucopheea N. ■White-floweeed Prairie Orchis. St. leafy ; Ivs. lance- 

 olate, tapering to a narrow, obtuse point, channeled; bracts shorter than the 

 ovaries; rac oblong, sep. roundish-oblong, acutish; lateral petals obovote, denti- 

 culate; lip 3-parted, flaboUiform, segments deeply fimbriate ; spur subulaie-clavaie, 

 curved, twice as long as the ovary. — Wet prairies, "W. States. Stem 1 — 3f high. 

 Leaves 2 — 6' long. Raceme about 12-flowered. Sepals and spur yellowSh, 

 petals white. Ovary curved, 1' long. 



li- P. .Psycddes Gray. Purple Fringed Obciiis. Lower Ivs. lanceolate, 

 diminishing upwards ; lip 3-parted, scarcely longer than the petals, the segmentu 

 cuneiform, ciliate-fimbriate ; lateral pet. ovate, erose-crenidate or slightly fringed, 

 spur filiform, elavate, longer than the ovary, common in meadows. Can. to G-a., 

 "W. to Wis. Stem IJ — 2^t high, smooth, slender. Leaves 3 — 6' long. Flow- 

 ers showy, numerous, in a terminal, cylindric spilce, light purple. Lip some- 

 what longer than the petals, its 3 spreading segments very veiny and sparingly 

 bristle-cleft. Spur an inch in length. Jl. (0. fimbriata Ph. Bw. 0. incisa & 

 tiisii iluhL) 



15 P. Bi§fel6vii. Large Fri.s'oed ORonis. Lower Ivs. oblong, oval, obtuse, 

 upper ones very narrow; bracts shorter than tlio ovary; rac. oblong; Up depen- 

 dent, twice as long as the petals, 3-parted, the segments fan-shaped and fi.mbriate, 

 the middle ono largest, with couuivent fimbrias ; lateral pel. fimbriate ; spur as- 

 cending, olavate, longer than the ovary. — A superb plant, considered the most 

 beautiful of the genuSj iu wet meadows, Can. to Penn. Stem 2 — 3f high, thick, 

 hollow, with several sheathing bracts at base. Leaves 2 or 3 principal ones, 4 — 1' 

 by 1 — 2', upper ones linear, an inch or two long. Flowers purple, in a terminal 

 raceme, 3 — 6' long. Middle segm. of the lip nearly semicircular, twice as long as 

 the lateral ones. June. (P. fimbriata, Lindl. 0. grandiflora Bw.) 



16 P. peramoena Gray. St. tall, leafy; Ivs. lanceolate and lance-linear; bracts - 

 nearly equaling the ovary ; sep. roundish-ovate ; lateral petals denticulate ; lip 3- 

 parted, divisions cuneiform, dentate, middle ono 2-lobed ; spur filiform, elavate at 

 end, curved, longer than the ovary. — A large and showy species in marshy grounds, 

 Penn. to Ind. and southward. Stem slightly winged. Loaves 4 — 6' long. Fls. 

 violet-purple, largo, 20 — 50, in a terminal spike. Ovary 1', and spur l|' long. 

 June, July. (P. fissa Lindl.) 



17 P. Michauxii. St. very leafy; lower Ivs. eUipiic-oval, acute, upper much re- 

 duced, lanceolate ; spilce few-flowered, loose ; lip 3-parted into long linear setaceous 

 segments; petals 2-parted, lower division linear-setaceous; spur near twice longer 

 than the ovary. — Pine barrens, S. Car. to Pla. (Chapman) and lia. (Hale). p£nt 

 12 to 16' high. Lvs. about 3' by 1'. Spur filiform, clavellato at end, near 2' long. 

 Fls. rather distant, white. Aug. — Oct 



18 P. rdpens. St. very leafy, fi'om a, creeping rhizome; lvs. all linear-lanceolate, 

 elongated, lower bracts longer than the flowers; spike closely many-flowered ; lip 3- 

 parted into setaceous segments; petals 2-parted, lower segment setaceous ; spur 

 recurved, scarcely longer than the ovary. — Borders of ponds in pine barrens, S. 

 Car., Ga. to La. (Hale.) Strikingly similar to the last, yet strikingly distinct, 

 12' to 18' high. Flowers greenish yellow, about half as large, spur about half an 

 inch long, filiform. Lvs. 5 to 8' long, tapering to a very acute point. Aug., Sept. 



19 ? P. quercicola. Root epiphytic, creeping ; lvs. all cauline, lance-ovate, acute, 

 rounded at base ; petioles sheathing the stem ; spike dense, few or many-flowered ; 

 fls. small, ringent, sep. and pet. ovate, obtuse ; lip spatulate, free from the column, 

 aiightly recurved ; spur saccate, scarcely as long as the lip, half as long as the 

 ovary. — Chiefly growmg in the rough bark of oaks, Fla. (Chapman) to La. (.Hjile). 



