534 CXL. ORQHIDACEiE. Ohchis, 



11. O. ROTDNDiFOLiA. Pursh. (Habcnada. Rixk. Platanthera. Lindl.) 

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

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

 falcate, middle one obcordate ; spur as long as the lip. — Ct., Penn., Eaton, Can. 

 Scape about a foot high, slender, without a bract. Leaf 2 — 4' long, i 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. Z-w^/.) Yellow Fringed 

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



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

 spur 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 diininishing upwards. 

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

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

 in length. July, Aug. 



13. O, CRisTATA. Michx. (Habenaria. Broien. Platanthera. Lindl.) 

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

 ered; segments of tlie perianth rounded,, the two lateral petals toothed, lip oblong, 

 pinnately 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. Bi.EPHARiGLOTj-is. Willd. (Habenaria. Rich. Platanthera. Lindl.') 

 White Fringed Orchis. — Lo^cer Ivs. lanceolate, channeled; spike ol)long, 



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, (N. Y. ! to Car.,) resembling the 

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

 a pure white. Stem 1 — 2fhigh. 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; Ivs. lanceolate and lance-linear; brads nearly equaling the 

 ovary; scp. roundish-ovate; lateral petals denticulate; lip 3-parted, divisions 

 cuneiform, dentate, middle one 2-lobed; .yw/- filiform, clavate at end, curved, 

 .onger 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 \\' long. June, July. 



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

 thera. Lindl.) Ragged Orchis. — Lo-wer Ivs. oblong, obtuse, upper mics 



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

 nate; lip 2-\iarte&, 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 — G' by § — 1', mostly acute. Flowers 

 numerous, in a long, loose spike, of a greenish-white, not showy. Sepals ovate. 

 Petals oblong-linear, entire, lip reflexed, very deeply laciniate. Readil}^ 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. Hal>enaria. Rich. Platanthera. 

 Lindl.) Purple Fringed Orchis. — Lower Ivs. lanceolate, diminishing ujv 



wards ; Up. 3-parted, scarcely longer than the petals, the segments cuneiform, 

 ciliate-firabriate ; lateral pet. ovate, fimbriate-dentate ; spur filiform, clav'ate, 

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

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

 Flowers showy, numerous, in a terihinal, 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. 



