162 OHIO BIOLOaiGAL SXJEVBY 



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



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

 Boss, Clark. 



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



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



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 pubeseens (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). 



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



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



specimens. 



600. Corallorrhiza maculata Raf. Large Coral-root. Erie, Huron, 



Cuynhcga, Wayne. Fairfield, Franklin, Gallia, Noble. 



598. 



