ne Ohio ^JSCaturalist, 



PUBLISHED BY 



The Biological Club of the Ohio State University. 



Volume XI. 



APRIL, 1911, 



No. 6. 



TABLE OF CONTENTS. 



Detmers— The Vascular Plants of the Crauberry Bog in Buckeye Lake 305 



HiNE — New Species of Diptera of the Genus Erax 307 



Dachnowski — The Ancient Vegetation of Ohio and its Ecological Conditions for 



Growth 312 



Stekki— Notes on the Anatomy and Physiology of the Unionidae 331 



Gloyek— The Occurrence of Apple Bloch in Ohio 334 



THE VASCULAR PLANTS OF THE CRANBERRY BOG IN 



BUCKEYE LAKE. 



Freda Detmers. 



A floristic survey is being made of the bogs and swamps in 

 Ohio; and as soon as it is complete the Hst of plants will be pub- 

 lished. This present list includes the Vascular plants of the 

 Cranberry Bog or Cranberry Island in Buckeye Lake. The list 

 of Thallophyta and Bryophyta is not yet complete and will be 

 published later. 



Osmunda regalis L. 



" cinnamomea L. 



Dryopteris thelypteris (L.) A Gr. 

 " cristata (L.) A Gr. 



" spinulosa (Retz.) Kuntze. 



Tj^pha latifolia L. 



" angustifolia L. 

 Potamogeton natans L. 



" zosteraefolius Schum. 



" pusillus L. 



" pectinatus L. 



sp. 



Scheuchzeria palustris L. 



Sagittaria latifolia Willd. 



Echinochloa walteri (Pursh.) Nash. 

 Panicuin capillare L. 

 Homalocenchrus oryzoides (L.)Poll. 

 Muhlenbergia racemosa (Mx.) B. 



S. P. 

 Calamagrostis canadensis (Michx.) 



Beauv. 

 Eragrostis hypnoides (Lam.)B.S.P. 

 Panicularia nervata (Willd. ) Kuntze. 

 Cyperus erythrorhizos Muhl. 



" strigosus L. 



Dulichium arundinaceum (L.)Britt. 



Eleocharis obtusa Schultes. 



palustris (L.) R. & S. 

 " palustris glaucescens 



(Willd.) A. Gr. 

 " acicularis (L.) R. & S. 



tenuis (Willd.) Schultes. 



Scirpus lacustris L. 



" fluviatilis (Torr.) A. Gr. 

 " cyperinus (L.) Kunth. 

 Eryophorum virginicum L. 

 Rynchospora alba (L.) Vahl. 

 Carex alata Torr. 



" scirpoides Schkuhr. 



" retroflexa Muhl. 



" vulpinoidea iXIichx. 



" decomposita Muhl. 



" diandra Schrank. 



" diandra ramosa (Boott.) 

 Fernald. 



" stipata Muhl. 



" aquatilis Wahl. 



" stricta Lam. 



" , leptalea Wahl. 



" limosa L. 



" filiformis L. 



" pseudo-cyperus L. 



" comosa Boott. 



