_Continental Range_—From Greenland, Yakutat Bay and eastern part of Kadiak Island and vicinity of Sitka, Alaska, to Fort Franklin; southward to Pennsylvania and New Jersey; westward to Minnesota, Montana, Washington, New Mexico, and California. This species is closely allied with the Tall White Fragrant Bog-Orchis (_H. dilatata_). The latter, however, is not constructed for self-fertilization. Several species of _Habenaria_ appear to intergrade with each other more or less throughout their range. _New England Range_—Maine, common; New Hampshire, frequent; Vermont, abundant; Massachusetts, infrequent; Rhode Island, not reported; Connecticut, rare. 6.—HABENARIA MEDIA (Rydberg) Niles, 1901-1903[70] INTERMEDIATE BOG-ORCHIS The specific name, _media_, refers to the intermediate form of this species between _H. hyperborea_ and _H. dilatata_. A tall bogland orchid, with fleshy roots. June-August. =Flowers= greenish-purplish, spike densely flowered; it has often been confused with _H. hyperborea_ and _H. dilatata_, which it closely resembles. Type specimen from Quebec. =Labellum= lanceolate, entire, obtuse, slightly dilated at the base; spur exceeding the labellum, curved and obtuse. =Sepals= ovate-oblong; petals lanceolate, obtuse. =Stem= 16 inches to 2½ feet high, rather stout. =Leaves= lanceolate, acute. Seed-capsule ⅖ inch long. _Continental Range_—In bogs from Quebec, southward to New York and New England. _New England Range_—There are no authoritative stations reported as yet, although the author collected intermediate forms of _H. hyperborea_ in Dimmick Swamp, Pownal, Vermont, July, 1903, answering to Dr. Rydberg’s descriptions of this form. It is also reported by Marcus White and A. LeRoy Andrews for Pownal Swamps.[71] 7.—HABENARIA DILATATA (Pursh) Hooker, 1814-1825 TALL WHITE NORTHERN ORCHIS The specific name, _dilatata_, refers to the dilated condition of the labellum of this orchid. A tall slender or stout bogland orchid, with fleshy-fibrous or tuberous roots. June 2d-August 23d. =Flowers= white, small, in a densely flowered spike 2-10 inches long. Slightly fragrant. Not constructed for self-fertilization as the closely allied species _H. hyperborea_. =Labellum= entire, dilated, or obtusely 3-lobed at base. =Spur= blunt and incurved. =Sepals= ovate, obtuse, and small. =Stem= slender, often stout, inferring that an intermediate form exists, which Dr. Rydberg has designated specifically as _fragrans_. =Leaves= lanceolate. =Seed-capsule= much twisted. _Continental Range_—From Ankow River, Ocean Cape, Alaska, and Unalaska in latitude 60° North; southward to Litchfield, Connecticut, Amherst, Massachusetts, and Pennsylvania; westward to Minnesota, Wyoming, Colorado, also occurring in the cañons of Clear Water Valley, Idaho. _New England Range_—Maine, common; New Hampshire, frequent; Vermont, frequent; Massachusetts, infrequent; Rhode Island, not reported; Connecticut, rare.