478 ORCHIDACEAE. 



i. Corallorhiza Corallorhiza (L.) Karst. Early Coral-root. (Fig. 1139.) 



Ophrys Corallorhiza L. Sp. PI. 945. 1753. 



Corallorhiza innata R. Br. in Ait. Hort. Kew. Ed. 2, 

 5: 209. 1813. 



Corallorhiza Corallorhiza Karst. Deutsch. Fl. 448. 

 1880-83. 



Scape glabrous, 4'-i2' high, clothed with 2-5 

 closely sheathing scales. Raceme 1'-$' long, 3-12- 

 flowered; flowers dull purple, about l /t' long, on 

 very short minutely bracted pedicels; sepals and 

 petals narrow, about 3" 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 4 // -6 // long, 

 oblong or somewhat obovoid. 



In woods, Nova Scotia to Alaska, south to New Jer- 

 sey, in the mountains to Georgia, and to Michigan and 

 Washington. Ascends to 3000 ft. in Vermont. Also in 

 Europe. May-June. 



2. Corallorhiza odontorhiza (Willd.) jf 

 Nutt. Small-flowered Coral-root. 

 (Fig. 1140.) 



Cymbidium odontorhizon Willd. Sp. PL 4: no. 

 1805. 



Corallorhiza odontorhiza Hutt. Gen. 2: 197. 1818. 



Scape slender, purplish, 6 / -i5 / high. Raceme 

 2'-4' long, 6-2o-flowered; flowers 3 // -4 // long, 

 purplish, sepals and petals lanceolate, 2" 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 woods, Massachusetts to Michigan, Florida 

 and Missouri. Ascends to 3000 ft. in North Caro- 

 lina. July-Sept. 



. ^T 



3. Corallorhiza Wisteriana Conrad. 

 Wister's Coral-root. (Fig. 1141.) 



Corallorhiza Wisteriana Conrad, Journ. Acad. Phila. 

 6: 145. 1829. 



Stem slender, but usually stouter than that of the 

 preceding species, 8 / -i6 / high, bearing several 

 sheathing scales. Raceme 2 / -5 / long, loose, 6-15- 

 flowered; flowers about ~i" long, slender-pedicelled, 

 ascending or erect; lip broadly oval or obovate, 

 4 // -5 // long, 4 // -5 // wide; abruptly clawed, white 

 with crimson spots, crenulate, notched at the apex; 

 lamellae, 2 short prominent ridges; spur, a some- 

 what conspicuous protuberence adnate to the top of 

 the ovary; column strongly 2-winged toward the 

 base; capsule elliptic-oblong or oblong-obovoid, 

 about 5" long, drooping when ripe. 



In woods, Massachusetts to Ohio, Florida and Texas. 

 Feb. -May. 



