310 THE FLORA. 



Leaves radical and only 2 (rarely 8). Flowers on a scape. . . . 1-8 

 Leuf radical and only 1. Flowers small, on a scape. . . .4, 5 

 Loaves on the stem, several, upper ones reduced to bracts.... a 

 a Corolla lip entire, neither lobed, fringed, nor toothed. . . .6-9 

 n Corolla lip 2 or 3-toothed, not fringed nor divided. Flowers greenish. . . .10-12 

 a Corolla lip cleft into a fringe at the edge, but not divided .... 13-15 



e Corolla lip divided into 3 parts, which are fringed or not b 



b Flowers white or yellowish, with 5 long bristles, the 2 side petals 2-partect 

 S... .16,17. 



b Flowers white, the 2 side petals entire or toothed ; lip clawed IS, 19 



b Flowers purple, numerous, showy ; lip raised on a claw 20-22 



1 O. spectab'ilis. Shtncy Orchis. True Orchis. Fls. few, pink-purple, handsonas 



Leaves oblong-ovute. Height 4-7'. (Figs. 649, 650.) 



2 O. orbicula'ta. Itound-lv. O. Fls. whitish, racemed. Spur very long. Leaves 



round. Scape bracted. 



3 O. Hook'eri. Hooker" 1 * 0. Flowers green, spiked. Spur long as ovary. Leaveb 



round. Scape naked. 



4 O. obtusa'ta. Blunt-lv. O. Leaf obovate, obtuse. Lip linear, entire. 5-8'. r. 



5 O. rotundifo'lia. Small Round-lf. 0. Lf. round. Lip, mid. lobe obcord. 6-9'. r. 



6 O. hyperbo'rea. Northern O. Flowers greenish. Lip, petals, leaves, and bracts, 



lanceolate. 



7 O. dilata'ta. Broad-lip 0. Flowers whitish. Lip lance-linear, rhombic at base. 



8 O. niv'ea. Snowy 0. Flowers white. Lip oblong-linear. Leaves linear. S. 



9 O. nigra. Black 0. Flowers yellow, close. Lip ovute. Leaves lance-oblong. 



10 O. tridenta'ta. Trident O. Lip 3-toothed at end. Spur longer than ovary 



11 O. bractea'ta. Bracted O. Lip 2-3-toothed at end, spur half as long. 



12 O. fla'va. Small yellow 0. Lip obtuse, with a tooth each side, spur long. 

 18 O. crista'ta. Crested yellow 0. Flowers yellow, small, lip as long as the spur. 



14 O. cilia'ris. Large yellow 0. Flowers yellow, large, lip half as long as the spin. 



15 O. Blephariglot'tis. Ox-tongue 0. Fls. white, large ; 2 side petals cut-toothed. 



16 O. Miohauxii. Mickaux's 0. Leaves aval. Spur twice as long as ovury. 



17 O. re 'pens. Five-bristled O. Leaves lance-linear. Spur shorter than ovary. 



18 O. leucophae'a. White Prairie 0. Bracts shorter than the ovaries. Lip fan- 



shaped, 3-parted, fringed. Spur club-shaped, twice longer than ovary. 



19 O. lac'era. Ragged 0. Bracts longer than the flowers. Petals notched at end. 



Lip segments wedge-shaped, fringed. Spur filiform, long as ovary. 



20 O. amcena. Prairie O. Flowers dark-purple. Lip broad, lobes toothed, not 



fringed. M. W. S. c. 



21 O. Psyc'odes. Fringed O. Flowers light-purple. Lip wedge-shaped, the 2 



petals merely toothed, c. 



22 O. grandiflo'ra. Great-fi. O. Flowers light-purple. Lip semicircular, huge. 



2 petals fringed, r. 



