Tall, spiked damp sandy woodland or bogland orchid, with bulbous or corm-like roots. May 22d-July 1st (Northern States); April 20th-July 1st (Southern States). =Flowers=, 1-9 dull yellowish-brown, mixed with purple, 1 inch long, short-pediceled, in a loose raceme 2-4 inches long. =Labellum= shorter than petals, 3-lobed. =Sepals= and =petals= ½ inch long, linear-lanceolate. =Stem= or =scape= 1-2 feet high, producing 3 scales above the leaf. =Leaf= 1, basal, arising at side of scape, from the latest bulb or corm; elliptic, 4-6 inches long, appearing about September 9th, hyemal—lasting through the winter. _Continental Range_—From Ontario, southward to Georgia and Alabama; westward to Minnesota, Oregon, Idaho, Washington, and probably California. This species, like those of _Corallorhiza_, is not a definite dated flowering orchid; in the Virginian ravines it blooms as early as April 20th while in Wisconsin, and Missouri it blooms as late as July 1st. The average date for New England is from May 22d-June 25th. _New England Range_—Maine, rare; New Hampshire, rare; Vermont, rare; Massachusetts, rare; Rhode Island, not reported; Connecticut, rare. TABLE OF MEASUREMENTS. ENGLISH METRIC. 1½ inch (1″) = 2 millimetres (mm.). 1 inch (1′) = 2.5 centimetres (cm.). 1 foot (1°) = 3 decimetres (dm.). [Illustration: =Epiphytes, or Air Plants. A Corner in the Orchid House of the Botanical Gardens of New York City.=] FOOTNOTES [1] Thoreau, _Week on the Concord and Merrimack Rivers_, p. 244. [2] Thoreau, “Walking,” _Excursions_, p. 252. [3] Burroughs, _A Year in the Fields_. [4] Milton, _Comus_. [5] Whittier, _The Mayflowers_. [6] Thoreau, _The Maine Woods_, p. 34. [7] L. H. Bailey, Jr., _Talks Afield_, p. 128. 1885. [8] Thoreau, “Walking,” _Excursions_, p. 252. [9] Henry Baldwin, _Orchids of New England_, Plate 8, 1894. [10] Henry Baldwin, _Orchids of New England_, p. 38, 1894. [11] Henry Baldwin’s _Orchids of New England_, p. 37, 1884. [12] Thomas Wentworth Higginson, _The Procession of the Flowers_, p. 47. [13] Gray, _Fertilization of Orchids, in Sill. Journ. 1862-1863_. [14] C. A. Crandall, _Plant World_, p. 6. Jan., 1900. [15] Darwin, _Fertilization of Orchids_, p. 284. 1895. [16] _Ibid._, p. 291. [17] Darwin, _Fertilization of Orchids_, p. 292. 1895. [18] _Ibid._ [19] Darwin, _Fertilization of Orchids_, pp. 285-286. 1895. [20] Thomas Wentworth Higginson, _The Procession of the Flowers_, p. 17. [21] John Richardson, M.D., _Bot. Appendix, Report of Franklin’s Journey_, 2d ed., p. 34, 1823. [22] Dr. F. Kurtz, _List of Alaskan Orchids_, Expedition 1882. [23] A. W. Driggs, _Catalogue Plants of Connecticut_, p. 19. 1901. [24] F. F. Le Moyne, _Garden and Forest_, 3: 1890. [25] T. W. Higginson, _The Procession of the Flowers_, p. 21. [26] Thoreau, _Summer_, p. 198. [27] _Ibid._, p. 347. [28] Thoreau, _Summer_, p. 347. [29] Darwin, _Fertilization of Orchids_, p. 226. 1895.