484 



ORCHIDACEAE 



3. Corallorrhiza mertensiana Bong. 

 Merten's Coral-root. Fiaf. 1182. 



Corallorrhiza mertensiana Bong. Mem. Acad. St. Petersb. VI. 2: 

 165. 1832. 



Scape stout, 2-5 dm. high, brownish purple, clothed with 

 usually 3 scarious sheathing bracts. Raceme 10-40-flowered ; 

 pedicels slender, 2-3 mm. long; sepals and petals narrowly 

 linear-lanceolate, 6-8 mm. long, dull purple, 3-nerved ; sepals 

 reflexed ; lip broadly oblong, narrowed at base, entire, thin 

 and concave, reddish purple, not spotted; spur prominent, 

 the lower half free from the ovary ; column slender, nearly 

 equalling the petals; capsule 15-18 mm. long, narrowed at 

 base to the slender pedicel ; lip reddish purple, not spotted. 



Coniferous forests, Canadian Zone; Alaska south to western Mon- 

 tana and Humboldt County, California. Type locality: Sitka, Alaska. 



4. Corallorrhiza bigelovii S. Wats. 

 Biglow^'s Coral-root. Fig. 1183. 



Corallorrhiza bigelovii S. Wats. Proc. Am. Acad. 12: 275. 



Scape stout, 2-4 dm. high, brownish purple, clothed with 

 3 or 4 scarious sheathing scales. Raceme 5-25 cm. long, 

 lCM-5-flowered ; pedicels very short; sepals and petals yel- 

 lowish purple, 3-nerved, striped with dark purple lines, or 

 the petals with 2 additional fainter stripes, 6-10 mm. long, 

 oblong to elliptic, the petals a little broader than the sepals; 

 lip reflexed, elliptic, 5-6 mm. long, deeply concave, auricu- 

 late at base; spur none, but sepals and petals gibbous at 

 base; column about half the length of the petals, rather 

 Blender, broadly winged below ; capsule oblong-ovate, 12-18 

 mm. long. 



Usually in dark woods, Transition Zone; Coast Ranges and Sierra 

 Nevada, northern and central California, extending south to the 

 Santa Cruz Mountains, and the southern Sierra Nevada. Doubtfully 

 distinct from the next. April-July. Type locality: Marin County, 

 California. 



5. Corallorrhiza striata Lindl. 

 Striped Coral-root. Fig. 1184. 



Corallorrhiza striata Lindl. Gen. & Sp. Orchid. 534. 1840. 

 Corallorrhiza macraci A. Gray, Man. ed. 2. 453. 1856. 



Scape stout, purplish, 2-5 dm. high. Raceme 

 5-15 cm. long, 10-25-flowered ; flowers dark purple; 

 sepals and petals narrowly elliptic, 3-striped with 

 deeper purple lines; lip oval or obovate, striate- 

 veined, entire or a little undulate, slightly auriculate 

 at base, about equalling the petals ; spur none, but 

 sepals and petals gibbous at base ; column slender, 

 about half the length of the petals. 



On the forest floor, Transition Zone; British Columbia to 

 Ontario, south to northern California, Wyoming, Michigan 

 and northern New York. Type locality: western North 

 America. 



