510 ORCHIDACEJE. (ORCHIS FAMILY.) 



the lateral sepals ascending, their hases with that of the lip forming the gibbos- 

 ity or short spur which is mostly adnate to the summit of the ovary : lip slightly 

 adherent to the base of the 2-edged straightish column, bearing a pair of pro- 

 jecting ridges on the face below, spreading or recurved at the apex. Anther 

 terminal, lid-like. Pollen-masses 4, obliquely incumbent, soft-waxy, free. 

 Brownish or yellowish herbs, destitute of green foliage, with much-branched 

 and toothed coral-like root-stocks (probably root-parasitical), sending up a sim- 

 ple scape, with sheaths in place of leaves, and bearing small and dull-colored 

 flowers in a spiked raceme. (Name composed of KopdAAioi/, cord, and pia, 

 root.} 

 1. Small spur or sac adnate to the summit of the ovary : /lowers small : lip whitish 



or purplish, often mottled with crimson. 



l.C. innata, R. Brown. Plant slender, light brownish or yellowish (3'- 

 9' high), 5 - 12-flowered ; pedicels very short ; lip somewhat hastately 3-lobed above 

 the base, the lamellae thick and rather short ; spur a very small protuberance ; 

 pod oval or elliptical (3" -4'' long). (C. verna, Nutt.) Swamps and damp 

 woods. May, June. Perianth only 2' or 2^'' long. (Eu.) 



2. C. odontorhiza, Nutt. Plant light brown or purplish ; stem rather 

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

 rather slender ; lip entire, or merely denticulate, thin, broadly ovate or obovate, 

 abruptly contracted into a claw-like base, the lamellae a pair of short projections; 

 the spur represented by a small cavity wholly adnate to the summit of the 

 ovary; pod at first very acute at the base, at length short-oval (4" long). (C. 

 Wistariana, Conrad.) Eich woods, New York to Michigan, and especially 

 southward : rare northward. May, July. Perianth about 3" long. 



3. C. multiflbra, Nutt. Plant purplish, rather stout (9' -18' high), 10- 

 30-flowered ; lip deeply 3-lobed, with a short narrowed base and with prominent 

 lamellae; spur manifest and protuberant ; pod oblong (6" -9" long), short-ped- 

 icelled. Dry woods : common. July - Sept. Perianth 2" - 4" long. 



2. Spur none: the broadly gibbous somewhat saccate base of the perianth wholly free 

 from the ovary : Jlowers large for the genus, purple, unspotted, more expanding. 



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

 25 large flowers in a crowded spike, on very short pedicels ; lip oval or obovate, 

 perfectly entire, concave, barely narrowed at the base, where it bears 1-3 short 

 lamella? ; all the parts of the perianth marked with 3 darker nerves ; pod oblong 

 (9" long). Woods, from near Lake Erie (Caledonia Springs, Canada, W. F. 

 Macrae), Mackinaw, C. G. Loring, Jr., Prof. Whitney, and westward to the 

 Pacific. July. Sepals, petals, and lip 6" or 7" long. This is the Aplectrum 

 aphyllum, Nutt. in herb. ; and from the range and the size of the flowers it can 

 hardly be other than C. striata, LindL, but it does not at all agree with the 

 character as to the lip and spur. 



15. APLECTRUM, Nutt PUTTY-ROOT. ADAM-AND-EVB. 



Perianth neither gibbous, nor with any trace of a spur or sac at the base. 

 Lip free, the palate 3-ridged. Otherwise the flowers and the scape (invested 

 below with 3 greenish sheaths) as in Corallorhiza. But, instead of a coral-like 



