308 OHIO BIOLOGICAL SUEVEY 



Phylum, STROBILOPHYTA 



Class, CONIFERAE, Conifers. 

 Finales. 

 Pinaceae, Pine Family. 

 Tsuga canadensis (L.) Carr. Hemlock. Common throughout the area, but occurs 



in pure stands only in the southern half. 

 Finns rigida Mill. Pitch Pine. On the edge of its range. 

 Pinus virginiana Mill. Scrub Pine. On the edge of its range. 



Juniperaceae, Juniper Family. 

 Juniperus virginiana L. Red Cedar. Common, but nowhere abundant. 



Taxales. 

 Taxaceae, Vew Famih-. 

 Taxus canadensis Marsh. American Yew. Abundant in the Hemlock forest in the 

 southern portion of the area, but absent from the northern portion. 



Phylum, ANTHOPHYTA 



Class, MONOCOTYLAE, Monocotyls. 

 Subclass, Helobiae. 

 AUsmales. 

 Alismaceae, Water-plantain Family. 

 Sagittaria latifolia Willd. Broad-leaf Arrowhead. Common in a few suitable 



habitats. 

 Alisma subcordatum Raf. (A. plantago-aquatica L.). American Water-plantain. 



Scheucherlzaceae, Arrow-grass Family. 

 Triglochin maritima L. Fide Bigelow. 



Potomogetonaceae, Pond-weed Family. 

 Potomogeton n;itaiis L. Common Floating Pondweed. Swamps along the old canal. 



Nympheales. 

 Nynipheaceae, Water-lily Family. 

 Brasenia schreberi Gmel. B. purpurea Mx. Casp.). Water-shield. Fide Bigelow. 

 Nymphaea advena Ait. Spatterdoek. 



Subclass, Spadiciflorae. 



Pandanales. 

 Sparganiaceae, Burr-reed Family. 

 Sparganium eurycarpum Englm. Broad-fruited Burr-reed. No herbarium specimen, 



noticed at the mouth of the first hollow north of Crystal Springs. 

 Sparganium americanum Xutt. Fide Bigelow. 



Typhaceae, Cat-tail Family. 

 Typha latifolia L. Common Cat-tail. Along the old canal. Xo herbarium specimen. 



