176 ORCHIDACEJB. 



Flowers and sterna brownish, purplish or yellowish, often mottled or striped. ... M .... 2 



Flowers and stems nearly or quite white 9 



Flowers and stems greenish: bracts membranaceous, acute. Sp. Sin 4 



1. CAJuYPSO, Salisbury. 



L O. borealis, Saliab. Stem 3-6 in. high: slender bract at top, subtending a drooping 

 showy flower: sepals and petals lanceolate, rose-tinged &- in. long; lip saccate, 2- 

 spurred, mottled. Springy places or bogs, from Russian River (Mist Wood) to Br. 

 Am. and B. to the Atlantic. Also in N. Eu. and Asia. 



2. CORAJLLORHIZA, Haller. 



Sepals and petals eimilar; lip dilated, recurved, fiat or concave, 2-ridged at base. Column 

 incurved. Rootstocka coral-like, hence the name Coral-root. 



1. O. multiflora, Nutt. Sepals and petals 3-4 lines long, yellowish or whitish, purple 

 tinged: spur formed by decurrent side-sepals wholly adnate to the ovary; lip broadly 

 ovate, 3-lobed, the middle lobe with undulate or denticulate margin, often purple- 

 mottled. Mts., San Diego to Br. Col., E. to the Atlantic. 



2. C. Mertensiana, Bong. Similar: flowers red: lower half of the spur free: lip nar- 

 rower, entire or with small teeth at base. Humboldt Bay to Alaska. 



3. C. innata, R. Br. Smaller: sepals 1&-2 lines long: spar very short. Wash. 



4. C. Bigelovii, Watson. Stout: sepals and petals oblong, obtuse, 4 lines long, 

 purple- veined; spur none. S. N. & Coast Mts., Cat. 



5. O. striata, LindL Similar: perianth 6-7 lines long. 8. N. Mts., N. & E. 



3. APIaECTRUM, Torrey. 



1. A. hiemale, Torr. Scape a foot high or more: leaf plaited, 4-8 in. long: perianth | 

 in. long, greenish brown; lip whitish, somewhat spotted, deeply 3-lobed, 3-ridged. 

 The glutinous bulbs give the name Putty-root. Or. E. to the Atlantic. 



4. HABENAJRIA, Willd. 



Sterna slender: leaves few and at base: perianth 2 lines long or less 1, 2 



Sterna leafy. Spur 4-6 lines long, slender: lip narrow 8, 4, 5 



Spur short and thick 6, 7 



1. H. elegans, Bolander. Spike dense: sepals and petals equal. Coast, Monterey, N. 



2. H. Unalaschensis, Watson. Spike less dense: flowers smaller: bracts ovate. 



3. 'H. leucostachys, Watson. Stout: flowers many, white: capsule sessile. Swamps. 



4. E. sparsiflora, Watson. Lower, more slender: leaves narrower: greenish flowers 

 10-20, distant, exceeded by the slender bracts: capsule sessile. S. N. Mts. & N. CaL 



5. H. pedicellata, Watson. Raceme loose: capsule tapering into a pedicel. 



