534 CXL. ORCHIDACE^. Orchis, 



11. O. ROTUNDiFOLiA. Pursli. (Habcnaria. Rich. Platanthera. Lindl.) 

 Lf. solitary, roundish-ovate; scape naked; spike lew-flowered; bracts ob- 

 tuse, shorter than the ovary ; sep. and pet. obtuse ; lip 3-lobed, lateral, lobes sub- 

 falcate, middle one obeordate ; spur as long as the lip. — Ct., Penn., Eat^an, Can. 

 Scape about a foot high, slender, without a bract. L.eaf 2 — 4' long, | as wide, 

 spotted, sheathing at base. Flowers about a dozen, of a greenish-white, remark- 

 able for their broad, 3 (almost 4)-lobed, pendant lip. 



* * Lip fimbriate. Stem leafy. 



12. O. ciLiAHis. (Habenaria. Rich. Platanthera. I/MI^^.) YeUmo Fringed 

 Orchis. — Lower Ivs. linear-lanceolate ; spike oblong, dense ; bracts shorter 



than the ovary; lip oblong-lanceolate, pinnate-ciliate, twice as long as the petals ; 

 .';piir longer than the ovary. — A delicately beautiful orchis, with bright orange- 

 colored flowers, in swamps, Can. to Ga. and Ky., rare. Stem about 2f high. 

 Leaves sheathing at base ; lower ones 3 — 5' long, rapidly diminishing upwards. 

 Sepals roundish, obtuse, concave. 2 petals linear, very small, incised at the 

 summit ; the lip narrov/, lanceolate, conspicuously fringed, 4" long. Spur 1' 

 in length. July, Aug. 



13. O. CRisTATA. Michx. (Habenaria. Brown. Platanthera. Lindl.) 

 Lvs. lanceolate and lance-linear; spike somewhat crowded, many-flow- 

 ered; segvients of tJic perianth roimded, the two lateral petals toothed, lip oblong, 

 pinnatcly ciliate, spur shorter than the ovary. — Swamps, N. J., Penn. to Car. 

 A small species, distinguished from the foregoing by smaller and more crowded 

 flowers which are of a bright orange-yellow, and by its shorter spur, &c. Jn. Jl. 



14. O. Blepuariglottis. Willd. (Habenaria. Rich. Platanthera. Lindl.) 

 White Fringed Orchis. — Lower lis. lanceolate, channeled; spike oblong', 



dense ; bracts linear, acuminate, shorter than the flowers ; lip lanceolate, 

 ciliate, as long as the upper sepal ; spur much longer than the long-beaked 

 ovary. — A delicate orchis, in swamps, TN. Y. ! to Car.,) resembling the 

 last species, but distinguished at least, by the color of its flowers which are of 

 a pure white. Stem 1 — 2f high. Flowers fewer than in the last. Sepals round- 

 ish-oblong, lateral reflexed. Petals spatulate, dentate. Lip fringed in the mid- 

 dle, 2" long. June, July. 



15. O. FissA. Willd. (Habenaria. Br.) 



St. tall, leafy ; lvs. 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 ; spir filiform, clavate at end, curved, 

 ionger than the ovary. — Wet grounds and marshes, Penn. to Va., W. to Ind. ! 

 A truly beautiful species 2--4f high. Stem slightly winged. Leaves 4 — 6' 

 long. Flowers violet-purple, large, 20 — 50, in a terminal spike. Ovary 1', and 

 spur 1}' long. June, July. 



16. O. LACERA. Michx. (O. Psycodes. Spr. Habenaria. Br. Platan- 

 thera. Lindl.) Ragged Orchis. — Lawer lvs. oblong, obtuse, upper ones 



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

 nate ; lip 3-parted, segments cuneate, capillaceous-multifid ; spur filiform, cla- 

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

 high, smooth, slender. Leaves few, 3 — 6' by h — V, mostly acute. Flowers 

 numerous, in a long, loose spike, of a greenish- white, not sho^vy. Sepals ovate. 

 Petals oblong-linear, entire, lip reflexed, very deeply laciniate. Readily dis- 

 tinguished from the following by its more slender habit, greenish flowers, and 

 the entire (not fringed) petals. July. 



17. O. Pyscodes. (O. fimbriata. Br. Habenaria. Rich. Platanthera. 



Lindl.) Purple Fringed Orchis. — Lmmr lvs. lanceolate, diminishing up- 

 wards ; lip. 3-parted, scarcely longer than the petals, the segments cuneiibrm, 

 ciliate-fimbriate ; lateral pet. ovate, fimbriate-dentate ; spur filiform, clavate, 

 longer than the ovary. — A beautiful plant, common in nueadows. Can., N. Eng., 

 Mid. and W. States. Stem U— 2if high, smooth, slender. Leaves 3—6' long. 

 Flowers showy, numerous, in a terminal, cylindric spike, light purple. Lip of 

 the nectary somewhat longer than the petals, its 3, fan-like, spreading segments, 

 as well as the petals, beautifully fringed. Spur an inch in length. July. 



