162 OHIO BIOLOGICAL SURVEY 



583. Triphora triaiitliophora (Sw.) Rydb. Nodding Triphora. Hu- 



ron, Cuyahoga, Wayne, Summit, Stark, Licking, Franklin, 

 Ross, Clark. 



584. Arethusa bulbosa L. Arethusa. Licking, Portage. 



585. Limodorum tuberosum L. Limodorum. Fulton, Lucas, Erie, 



Geauga, Portage, Summit, Ashland, Stark, Clark, Fairfield, 

 Licking, Wayne. 



586. Ibidium strictum (Rydb.) House. Hooded Lady's-tresses. Ash- 



tabula County. 



587. Ibidium plantagineum (Raf.) House. Broadleaf Lady's-tresses. 



Medina, Portage. 



588. Ibidium cernuum (L.) House. Nodding Lady's-tresses. Erie, 



Lorain, Cuyahoga, Medina, Portage, Stark, Lake, Licking. 



589. Ibidium ovale (Lindl.) House. Small-flowered Lady's-tresses. 



No specimens. 



590. Ibidium praecox (Walt.) House. Grass-leaf Lady's-tresses. 



Wayne County. 



591. Ibidium beckii (Lindl.) House. Little Lady's-tresses. Fairfield 



County. 



592. Ibidium gracile (Bigel.) House. Slender Lady's-tresses. Erie, 



Cuyahoga, Lake, Licking, Muskingum, Fairfield, Hocking, 

 Adams, Gallia, Morgan. 



593. Peramium pubescens (Willd.) MacM. Downy Rattlesnake- 



plantain. Adams, Hocking, Lake, Fairfield, Highland, 

 Wayne, Noble, Portage. 



594. Malaxis unifolia Mx. Green Addermouth. Fairfield, Hocking, 



Wayne. 



595. Liparis liliifolia (L.) Rich. Large Twayblade. Portage, Frank- 



lin, Fairfield, Clark, Wayne. 



596. Liparis loeselii (L.) Rich. Fen Twayblade. Champaign, Cuya- 



hoga, Summit, Stark. 



597. Tipularia unifolia (Muhl.) B. S. P. Crane-fly Orchis. Medina, 



(Lorain, Cuyahoga — Oberlin College Herbarium). 



598. Aplectrum hyemale (Muhl.) Torr. Putty-root. General. 



599. Corallorrhiza eorallorrhiza (L.) Karst. Early Coral-root. No 



specimens. 



600. Corallonhiza mficu'.uta Kaf. Large Coral-root. Eiie, Huron, 



Cuyahoga, Wayne, Fail field, Franklin, Gallia, Noble. 



