194 IOWA ACADEMY OF SCIENCES. 



Arthur's Flora of Iowa, p. 31, edition 1876; Bui. Nat. Hist., 

 S. U. I., Vol. 3, p. 212; Proc. Iowa Acad, of Sciences, Vol. 3, 

 p. 133; Vol. 4, p. 103; Vol. 5, p. 165. 



Habenaria psychodes (L.) Gray. This is reported from Fay- 

 ette county by Professor Fink, who records it as rare and the 

 habitat, wet river banks. Orchis psychodes L. (1753); 0. fimhri- 

 ata Alt. {17^91); Habenaria psychodes A. Gray. (1840). 



Proc. Iowa Acad, of Sciences, Vol. 1, part 4, p. 103. 



Habenaria hyperborea (L.) R. Br. Reported from Winne- 

 shiek county by Arthur, who gives the locality as Hesper. 

 Proc. of Daven. Acad, of Sciences, Vol. 3, p. 170. There are 

 three specimens in the S. U. I. herbarium that are supposed to 

 be Iowa specimens, but the locality for them is unknown. 



Gray's Manual, sixth edition, p. 507. 



Pogonia trianthophora (Sw.) B. S. P. This is a rare and local 

 plant in Iowa. It blooms during the month of August. Our 

 specimens are from Fayette county, collected by Professor 

 Fink, and from Johnson county. It occurs in rich woods. 

 Arethusa trianthophora Sw. {ld>QQi)\ Pogonia pendulalAndii. (1825); 

 P. trianthophora B. S. P. (1888). 



Arthur's Flora of Iowa, edition 1876, p. 31; Bui. Lab. Nat. 

 Hist., S. U. I., Vol. 3, p. 212; Proc. Iowa Acad, of Sciences, 

 Vol. 4, p. 102; Vol. 5, p. 165. 



Gyrostachys cernua (L.) Kuntze. This species may be found 

 in bogs, low prairies, and wet banks, and may be collected in 

 August or early September. It is widely distributed over the 

 state but is infrequently collected. Our specimens are from 

 Muscatine (Reppert), Emmet (Cratty), Johnson, and Decatur 

 counties. It has been reported from Fayette (Fink), Story 

 (Hitchcock), Hamilton and Woodbury (Pammel) counties. 

 Formerly frequent but now disappearing. Ophrys cernua L. 

 (1753); Spiranthes cernua L. C. Rich. (1817); Gyrostachys cernua 

 Kuntze (1891). 



Arthur's Flora of Iowa, edition 1876, p. 31; Proc. Iowa Acad, 

 of Sciences, Vol. 3, p. 133; Vol. 4, p. 102; Vol. 6, p. 197; Plant 

 World, Vol. 2, pp. 44 and 183; Trans. St. Louis Acad, of 

 Science, Vol. 5, p. 519. 



Gyrostachys gracilis (Bigelow) Kuntze. Usually collected in 

 August in open upland woods and prairies. Rather rare but 

 occasionally frequent locally. Our specimens are from John- 

 son and Decatur counties. It has been reported from Winne- 

 shiek county by Arthur, who gave the locality as Decorah. 



