132 ORCHIDACEJ3. Corallorhiza. 



prominent, 3-lobed by a deep cleft on each side, the lateral lobes usually narrow 

 and acutish, the middle one rounded or emarginate, with undulate or denticulate 

 margin : column stout, two thirds the length of the petals, the margins broader and 

 somewhat thicker at base and approximate : capsule 6 to 9 lines long, narrowed to 

 a short rather stout pedicel. Journ. Acad. Philad. iii. 1 38, t. 7 ; Hook. Exot. 

 Fl. iii, t. 174. 



In the mountains, from San Diego to British Columbia, and eastward to the Atlantic. Flowers 

 whitish, tinged and more or less veined or mottled with purple ; July to September. 



2. C. Mertensiana, Bongard. Scape many-flowered, 8 to 15 inches high: 

 sepals and petals linear-lanceolate, 3 or 4 lines long ; spur a line long, the lower 

 half free from the ovary ; lip entire, broadly oblong, attenuate to the narrow base, 

 thin and concave, the ridges only slightly prominent : column nearly equalling the 

 petals, slender, the narrow margin scarcely broader or thicker below ; stigma pro- 

 jecting and cucullate : capsule 5 or 6 lines long or more, attenuate into the short 

 slender pedicel. Veg. Sitch. 165; Hook. Fl. Bor.-Am. ii. 194. 



From Sitka to the Columbia and probably southward. Described by Bongard as with red 

 flowers : the teeth at each side of the base of the lip, mentioned by him, do not seem to occur 

 even in the specimens of his own collection. 



i -* Spur very short or not at all prominent : sepals and petals 1-nerved : capsule 



shorter, elliptic-oblong. 



C. INNATA, R. Brown. Scape slender, 4 to 10 inches high, 3 - 1 5-flowered ; upper sheath 

 often expanded at the apex : sepals linear-lanceolate, acutish, 1 to 2 lines long ; petals a little 

 broader and obtuse ; lip broad-oblong, obtuse or emarginate, somewhat 3-lobed by a lateral cleft 

 or indent, abruptly attenuate to the base, rather strongly crested : column a third shorter than 

 the petals, stout, constricted in the middle : capsule 2 to 4 lines long, abruptly narrowed to 

 a short very slender pedicel. Washington Territory (Lyalt), and perhaps southward ; in Colo- 

 rado (Parry), eastward through Canada and the Atlantic States, and common northward to the 

 arctic regions. Flowers in spring, often tipped with purple, the lip sometimes mottled. 



* * Spur none, the lateral sepals oblique and with the base of the column strongly 

 gibbous over the top of the ovary : lip entire, more or less concave, somewhat 

 fleshy : flowers larger, purple and veined, not spotted. 



3. C. Bigelovii, Watson. Scape stout, 6 to 1 5 inches high : sepals and petals 

 oblong, obtuse, about 4 lines long, twice longer than the column ; lip darker and 

 strongly veined, fleshy, deeply concave, elliptical, broad and somewhat auriculate, 

 with two thick laminpe : column rather slender, broadly margined below : capsule 

 oblong-ovate, 6 to 9 lines long, briefly attenuate into a short pedicel. Proc. Am. 

 Acad. xii. 275. C. striata, Torrey, Pacif. E. Rep. iv. 152, t. 25, not Lindl. 



In the Sierra Nevada and mountains of Northern California ; Big Tree Grove (Brewer, Bolan- 

 der) ; Plumas County (Mrs. Austin) ; Marin County, Bigclow. In flower, June and July. 

 Recognized by Dr. Torrey as distinct from C. Macrcei, with which the C. striata of Lindley is to 

 be identified. The figure cited fails to represent the peculiar gibbosity of the perianth. 



4. C. Striata, Lindl. Very similar to the last, but the flowers still larger, often 

 6 or 7 lines long : lip rather less fleshy, somewhat narrowed below, reflexed above 

 the base and bearing the prominent laminae upon the arch : scape stout, many- 

 flowered, 1 to 2 feet high. Orch. 534. C. Macrcei, Gray, Manual, 510. 



Plumas County (Mrs. Aiistiri) ; a common species in Washington Territory and Oregon, ranging 

 eastward to the Great Lakes. 



3. APLECTRUM, Torrey. PUTTY-ROOT. 



Perianth not at all gibbous or saccate at base : lip deeply 3-lobed, 3-ridged. 

 Column nearly straight, not broader at base. Scape lateral from a thick globose 

 solid bulb upon a slender horizontal rootstock, the bulb bearing at summit a single 



