OECHIDACEiE. (ORCHIS FAMILY.) 453 



1. C. innak^ta, R. Brown. Plant slender, light brownish or yellowish 

 (5' -9' high), 5 - 12-fldwered ; lip somewhat hastatdy 3-lobed above the base, the 

 lamellse thick and rather short; spur none; pod oval or elliptical (3 '-4" long). 

 (C. vema, Nutt.) — Swamps and damp woods, throughout; but scarce. May, 

 June. (Eu.) 



2. C. multiflora, Nutt. Plant purplish, rather stout (9'- 18' high), 

 10-30-flowered; lip deeply 3-lobed at the base; the middle lobe very wavy, re- 

 curved, the lamellse occupying a great part of its length ; spur a manifest protu- 

 berance; pod oblong (|'-|' long). — Dry rich woods; common, especially 

 northward. July -Sept. — Flower much larger than in the last: sepals and 

 petals 3" -4" long. 



* * Lip not at all hbed {mostly purplish, but unspotted) ; the lamellae consisting of 

 short and tooth-like processes near the base. 



3. C. Odontorhiza, Nutt. Plant light brown or purplish ; stem rather 

 slender, bulbous-thickened at the base (6' -16' high), 6 - 20-flowered ; ^loers 

 small, on rather slender pedicels ; lip (2" -3" long) obovaie or ovate with a short 

 narrowed base, flattish, with the margin tvavy and obscurely denticulate; spur ob- 

 solete; pod oval (3" -5" long). (C. Wistariana, Conrad, is merely a larger 

 foiTQ.) — Rich woods, W. New England and New York to Michigan and south- 

 ward ; common. May -Aug. — Flowers intermediate in size between No. 1 

 and No. 2. There is a small tooth, more or less evident, on each side, where 

 the base of the lip and the wing-like margin of the column join. 



4. C. ITIacreei, Gray. Plant purplish, stout (6'- 16' high), bearing 15- 

 20 large flowers in a crowded spike, on very short pedicels ; lip oval, very obtuse, rath- 

 er fleshy (purple), 3-nerved, perfectly entire, concave, the margins incurved, the 

 sessile base obscurely auriclod and with 1-3 short lamellse ; spur none at all ; 

 pod ovoid (^' long). — Woods, along Lakes Huron and Superior (Mackinaw, 

 C. G. Loring, Jr., Whitney, &c.. West Canada, W. F. Macrae.) — Sepals and 

 petals 6" - 8" long, conspicuously 3-nerved ; but tliis cannot be C. striata, Lindl., 

 which is said to have a 3-lobed and acute lip, &c. Flowers the largest of the 

 genus. 



16. APIiJGCTRUM, Nutt. Putty-koot. Adam-and-Evb. 



Sepals and petals much as in the last. Lip with a short claw, free, 3-lobed, 

 the palate 3-ridged ; no trace of a spur. Anther slightly below the apex of the 

 cylindi-ical straightish column : pollen-masses 4. — Scape and raceme as in Co- 

 rallorhiza, invested below with 3 greenish sheaths, springing in May from the 

 side of a thick globular solid bulb or corm (filled with exceedingly glutinous 

 matter), which also produces from its apex, late in the preceding summer, a 

 largo, oval, many-nerved and plaited, petioled, green leaf, lasting through tlie 

 winter. { Genus too near the last ■? The name composed of a privative and 

 n\ri<Tpov, a spur, from the total want of the latter.) 



1. A. IjyenialC, Nutt. — Woods, in rich mould : rare. — Solid bnlbs of- 

 ten 1' in diameter, one produced annually on a slender stalk, along with fibrous 



