682 Obdbb 138.— OBOH&ACB^. 



3 C. c^udidum Willd. St. leafy; Ivs. oiUmg-lmuieolate, acute; fl. terminal, soli- 

 tary; Sep. elliptic-lanceolate, acuminate, lower scarcely bifid at apex; petal 

 lanoe-linear, longer than the laieraUy compressed white Up ; sterile stamens Imceo- 

 hte, obtuse. — Border of woods, prairies, Penn. to Ind. (Plummer), Wis. atid Can. 

 St. about If high, simple. Lvs. 3 to 6' by l-J', sheathing the stem. Ovary pedi- 

 cellate. Lip 1' in length. Petals and sepals nearly 2'. May. — Well distinguished 

 by its sterile stamens as by its color. 



C. spectdbile Sw. St. leafy ; lvs. ovate-lanceolate, acuminate ; lobe of the 

 column elliptic-cordate, obtuse; sep. broad-ovate, obtuse; lip longer than the 

 petals, cleft before. — A tall, superb species,- found in swamps, Can. to Ky. ^nd 

 Car. Stem thick, 2 . feet or more high, hairy. Leaves 6 — 10' by 2 — i', veined, 

 plaited, hairy. Flowers 2 — 3 on each plant, very large. Lip white, striped'with 

 purple, 2' long, 1^ broad ; upper segment largest, lower one smaller, composed of 

 2 sepals completely uaited. Jl. 



5 C. acaiile Ait. Scape leafless, 1-flowerod ; lvs. 2, radical, elliptic-oblong, rather 

 acute ; lobe of the column roundish-rhomboidal, acuminate, deflexed ; pet. lance- 

 olate ; lip longer than the petals, cleft before. — A beautiful plant, in dark woods, 

 Car. to Arc. Am. Leaves large, plaited and downy. Scape 10—14' high, with a 

 single lanceolate bract at the base of the large, solitary flower. Sepals J' long, 

 the two lower completely united into a broad lanceolate one beneath the lip. 

 Petals lateral, wavy. Lip 2' by 1', purple, forming the most showy part of the 

 flower. May, Jn. (C. liumile Sw. ?) 



6 C. arietinum Ait. Ram's Head. St. leafy; lvs. elliptical, striate-veined; 

 Sep. 3, distinct (the 2 lower not united), linear-lanceolate, the upper oblong-ovate, 

 acuminate ; 2 lateral pet. linear ; hp as long as the petal, saccate, obconic. — ^In 

 damp woods. Can., Me., Tt. (Dr. Phelps) to N. Y. and Wis.? Stems usually 

 clustered, flexuous, 8 — 12' high, lower part sheathed. Leaves 3 — 5,2 — 3' by 

 i — 1', sessile, amplexioaul. Flower mostly solitary, with a leafy bract at base. 

 Segments about equal in length, the upper one as broad as the other 4 together. 

 The singular form of the lip readily suggests the name of this curious plant. May. 



2. OR'CHIS, L. (Gr. Spxtg, the ancient name.) Flower ringent, 

 sepals and petals similar, some of them ascending and arching over the 

 column ; lip turned downwards, produced at base beneath into a spur 

 which is distinct from the twisted ovary ; stamen 1, anther 2-celled ; 

 pollinia 2, one in each cell, composed of numerous waxy grains im- 

 plicated in a cobweb tissue ; pedicellate and attached to 2 glands of the 

 stigma which are contained in one common little pouch. Fls. several, 

 large, bright-colored, in a spike or raceme. 



O. spectdbilis L. Lvs. about 2, nearly as long as the scape ; lip obovate, undi- 

 vided, crenate, retuso; segments of the perianth straight, the lateral ones longer; 

 spur clavate, shorter than the ovary, bracts longer than the flower. — This pretty 

 little plant is found in shady woods and thickets, among rocks, etc., U. S. and 

 Can. Root fasciculate. Leaves few, radical, ovate, 3 — 6' long, ^ to ^ as wide. 

 Scape 4 — 6' liigh, acutely angled, with a lanceolate, acute bract and 3 — 5 large, 

 showy flowers. Segments of the perianth purple, ovate-lanceolate. Lip and 

 spur white or whitish, each about 8" long. May, Jn. 



3. GYMNADE'NIA, E. Brown. Orchis. (Gr. yvfivog, naked, ddfiv, 

 . gland.) Anther-cells parallel or converging below ; glands of tlio 



stigma to which the pollinia are attached naked. Otherwise as in Orchis. 



1 G. nivea. St very slender, lowest leaf long, linear, acute, the others (6 to 12) 

 very much scaler subuj^te, bract-like; fls. 20 to 30, sm^l, in an oblong-cylin- 

 drio spiko, lip {whtte) oblong, crenulateov wavy, longer than Uie petals, produced 

 behmd into « Jj/orm spur which is nearly twice lonier than the ovar^ f column 

 very short ; polhma at length naked.-Gk (Pond) fS FlL ^d LaTS) Boot 

 fibrous, producing tuberous corms. St. 1 to 2f l&h leaf 6 to s' WS tT*" 

 nT^:-BJt.r '"'^ "''' "''" ^"""^^ trntNos.Va^°d1: (olchis 



