ORCHIDACEAE. 305 



1. Aplectrum spicatum (Walt.) B. S. P. ADAM-AND-EVE. PUTTY-ROOT. (I. 

 F. f. 1147.) Scape glabrous, 3-6 dm. high, bearing about 3 sheathing scales. Leaf 

 arising from the conn, at the side of the scape, elliptic or oval, 10-15 cm - l n g> *-5 

 cm. wide, usually lasting over winter; raceme 5-10 cm. long, loosely several-flow- 

 ered: bracts lanceolate, 2-6 mm. long; flowers dull yellowish brown mixed with 

 purpze, aoout 2.5 cm. long, short-pedicelled; sepals and petals liiiear-oblanceolate, 

 about i cm. long, 2-2.5 mm - wide, acute or rarely obtuse; lip shorter than the 

 petals, obtuse, somewhat 3-lobed and undulate; column slightly curved, shorter 

 than the lip; capsule oblong-ovoid, angled, about 2 cm. long. In woods and swamps, 

 Vt. and Ont. to the N. W. Terr., south to Ga. Several old corms usually re- 

 main attached to the latest one. Specimens with yellowish green, unspotted flow- 

 ers have been collected by Prof. Underwood at Jamesville, N. Y. May-June. 



2. Aplectrum Shortii Rydb. n. sp. SHORT'S PUTTY-ROOT. Like the pre- 

 ceding, but steins stouter, the sheaths of the scales of the stem loose, inflated; leaves 

 broadly oval or obovate, often 7 cm. wide; sepals and petals much broader, very 

 obtuse, 3-4 mm. wide, and lip more gibbous at the base; bracts ovate, 1-3 mm. 

 long. The only specimens seen were collected by Dr. C. W. Short in Ky. 



25. CORALLORHIZA R. Br. 



Scapose herbs, saprophytes or root-parasites, with large masses of coralloid 

 branching roots, the leaves all reduced to sheathing scales. Flowers in terminal 

 racemes. Sepals nearly equal, the lateral ones united at the base with the foot of the 

 column, forming a short spur or gibbous protuberance, the other one free, the spur 

 adnate to the summit of the ovary. Petals about as long as the sepals, 1-3 -nerved. 

 Lip i-3-ridged. Column nearly free, slightly incurved, somewhat 2-winged. 

 Anther terminal, operculate. Pollinia 4, in 2 pairs, oblique, free, soft-waxy. 

 [Greek, from the coral-like roots.] About 15 species, widely distributed in the 

 north temperate zone. Besides the following, some 4 others occur in the southern 

 and western parts of North America. 



Spur small or sac-like, adnate to the top of the ovary. 

 Lip not deeply 3-lobed. 



Lip 2-toothed or 2-lobed above the base. i. C. Corallorhiza, 



Lip entire, or merely denticulate. 



Flowers about 6-8 mm. long; lip not notched; column narrowly winged. 



2. C. odontorhiza. 

 Flowers 14 mm. long; lip notched; column manifestly winged. 



3. C. Wisteriana. 

 Lip deeply 3-lobed; flowers 12-18 mm. long. 4. C. multiflora. 



No spur or sac. 5. C. striata. 



1. Corallorhiza Corallorhiza (L.) Karst. EARLY CORAL-ROOT. (I. F. f. 

 1139.) Scape glabrous, 1-4 dm. high, clothed with 2-5 closely sheathing scales. 

 Raceme 2-7 cm. long, 3-12-flowered; flowers dull purple, about I cm. long; sepals 

 and petals narrow, about 6 mm. long; lip shorter than the petals, oblong, whitish, 

 2-toothed or 2-lobed above the base; spur, a sac or small protuberance adnate to 

 the summit of the ovary; capsule 8-12 mm. long, oblong or somewhat obovoid. 

 In woods, N. S. to Alaska, south to N. J., in the mountains to Ga., and to Neb. and 

 Wash. Also in Europe. May-June. 



2. Corallorhiza odontorhiza (Willd.) Nutt. SMALL-FLOWERED CORAL- 

 ROOT. (I. F. f. 1140.) Scape slender, purplish, 1.5-3.5 dm. high. Raceme 5-10 cm. 

 long, 6-2O-flowered; flowers 6-8 mm. long, purplish; sepals and petals lanceolate, 

 4 mm. long or less, marked with purple lines ; lip as long as the petals, broadly 

 oval or obovate, entire or denticulate, narrowed at the base, not notched, whitish; 

 spur, a small sac adnate to the top of the ovary ; wings of the column very narrow. 

 In v/oods, Mass, to Mich., Fla. and Mo. July-Sept. 



3. Corallorhiza Wisteriana Conrad. WISTER'S CORAL-ROOT. (I. F. f. 1141.) 

 Stem stouter than that of the preceding species, 2-4 dm. high, bearing several 

 sheathing scales. Raceme 5-12 cm. long, loose, 6-15 -flowered; flowers about 14 

 mm. long, slender-pedicelled; lip broadly oval or obovate, 8-IO mm. long and 

 wide, abruptly clawed, white with crimson spots, crenulate, notched at the apex; 

 spur, a somewhat conspicuous protuberance adnate to the top of the ovary; column. 



