LIST OF HIGHER SEED-PRODUUING PLANTS. 169 
Platanthera tipuloides LINDL. Orch. 285 (1846). 
Gymnadenia tridentata LinDL. Orch. 227 (1846). 
Wats. and Coult., Gray's Man. 6 ed. 506; Britt., Fl. N. J. 234; Upham, 
Fl. Minn, 139; Mac., Fl.Can. IT, 18; Cov., Fl. Ark, 223. 
North America: Newf. N. Br., Q., Ont. to L. Huron 
and L. Superior; S. to N. Eng, N. J. and N. Car.; W. to 
Minn., Ind. and Ark. 
Minn. valley: N. E. district; infrequent; damp woods 
and near springs. ; 
Hers.: Bailey 10a, White Bear lake. 
POGONIA Juss. Gen. 65 (1789). 
Nervilia GAub. Freyc. Bot. Voy. 422 (1826). 
Cordylia BuuME, Bij. 416 (1826). 
Rophostemon BLume, Fl. Jav. 6 (1828). 
Aplostellis THou. Orch. Ile. Afr. t. 24 (1806). 
Haplostellis ENDL. Gen. 219 (1838). 
Cleistes L. C. Rico. Mem. Mus. Par. IV, 31 (1818). 
Triphora Nutt. Gen. II, 192 (1818). 
Codonorchis LInDL. Gen, et. Spec. Orch. 410 (1840). 
Isotria and Odonectis Rar. Desf. Jour. Bot. I, 220, 221 (1808). 
Didymoplexis Grirr. Calc. Journ. IV, 383 (1844). 
Benth. and Hook., Gen. Pl. III, 615; Durand, Ind. Gen. Phan. 401; 
Engler and Prantl, Nat. Pflanz. 2,VI, 106. 
Living species: 48; cosmopolitan. N. America, 6; E. Sts., 
5; Canada, 3; S. Sts., 4. 
Pogonia ophioglossoides (L1Inn.) KER. Bot. Reg. 148 (1816). 
Arethusa ophioglossoides LINN. Spec. 951 (1753). 
Wats. and Coult., Gray’s Man. 6 ed. 505; Upham, Fl. Minn. 141; Mac., 
Fl. Can. II, 11; Britt., Fl. N. J. 233; Chap., Fl. §.St. 457; Engl. Pfitzer, 
Nat. Pflanz. II, 6, 106. 
Japan? 
North America: Newf., N. S., N. Br., Q., Ont.; S. to 
N. Eng., N. J, and Fla.; W. to N. Ind. and Minn. 
Minn. valley: N. E. and N. W. districts; local, bogs 
and tamarack swamps. 
HERB.: Oestlund 193, Ramsey Co.; Herrick 294, Minne- 
apolis; Kassube 229, Minneapolis; Sandberg 549, Chisago Co.; 
Sandberg, 550, Chisago Co.; Herb. Sheld. 1756, Ramsey Co. 
ARETHUSA Linn. Gen. ed. V, 905 (1754). 
Benth. and Hook., Gen. Pl. III, 614; Durand, Ind. Gen. Phan. 401; 
Engler and Prantl, Nat. Pflanz. 2, VI, 107 (Pfitzer). 
Living species: 2; Japan, 1; Atl. N. Amer., 1. 
Arethusa bulbosa Linn. Spec. 950 (1753). 
Wats. and Coult., Gray’s Man. 6 ed. 504; Britt., Fl. N. J. 232; Upham, 
