ORDER 138. ORCHIDACE^E. 685 



12 P. lacera Gray. RAGGED ORCHIS. Lower Ivs. oblong, obtuse, upper ones 

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

 lip 3-parted, segments cuneate, capillaceous-multifid ; spur filiform, elavate, a-s 

 long as the ovary. Swamps and meadows, Can. to Car. Stem 1 2f high, smooth, 

 slender. Leaves few, 3 6' by J td 1', mostly acute. Flower numerous, in a 

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

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

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

 petals. July. 



13 P. leucoph&a X. "WHITE-FLOWERED PRAIRIE ORCHIS. St. leafy ; Ivs. lance- 

 olate, tapering to a narrow, obtuse point, channeled; bracts shorter tfian tfie 

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

 culate; lip 3-parted, flabelliform, segments deeply fimbriate ; spur subulate-davate, 

 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 yellowish, 

 petals white. Ovary curved, 1' long. 



14 P. Psycddes Gray. PURPLE FRINGED ORCHIS. Lower Ivs. lanceolate, 

 diminishing upwards; lip 3-parted, scarcely longer than the petal*, the segments 

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

 spur filiform, elavate, longer than the ovary, common in meadows, Can. to Ga., 

 "W. to Wis. Stem U 2if high, smooth, slender. Leaves 3 6' long. Flow- 

 ers showy, numerous, in a terminal, cylicdric spike, 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. fiinbriata Ph. Bw. 0. incisa & 

 lissa MuhL) 



15 P. Bigelovii. LARGE FRINGED ORCHIS. Lower Ivs. oblong, oval, obtuse, 

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

 dent, twice as long as the petals, 3-parted, the segments fan-shaped and fimbriate, 

 the middle one largest, with connivent fimbrise ; lateral pet. fimbriate ; spur as- 

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

 beautiful of the genus, in wet meadows, Can. to Penn. Stem 2 3f high, thick, 

 hollow, with several sheathing bracts at base. Leaves 2 or 3 principal ones, 4 7' 

 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.) 



16 P. peramcena 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 one 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. Leaves 4 6' long. Fls. 

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

 June, July. (P. fissa LindL) 



17 P. Micliatixii. St. very leafy; lower hs. elliptic-oval, acute, upper much re- 

 duced, lanceolate: sptix 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 Fla. (Chapman) and La. (Hale). Plant 

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

 Fls, rather distant, white. Aug. Oct. 



18 P. repens. St. very leafy, from a creeping rhizome; hs. 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 un 

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



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

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

 fis. small, ringeut, sep. and pet ovate, obtuse ; lip spatulate, free from the column, 

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

 ovary. Chiefly growing in the rough bark of oaks, Fla. (Chapman) to La. (Bale). 



