ANNOTATED LIST OF FERNS AND FLOWERING 



PLANTS 



OPHIOGLOSSACEAE (Adder's Tongue Family) 

 Ophioglossum L. Adder's Tongue. 



O. vulgatum L. var. pycnostichum Fern. See Rhodora 41, 494. 

 1939. 

 Infrequent, in moist, shaded ground. Piedmont and Coastal 

 Plain, north of the Virginia line. 



Var. pseudopodum (Blake) Farwell. 



Rare: woods near Centreville (NC), Commons, 14 July 

 1873 (A). 



Botrychium Sw. Grape Fern. 



B. dissectum Spreng. (B. ohliquum var. dissectum (Spreng.) Clute.) 

 Lace-leaved Grape Fern. 

 Frequent throughout, in wet or dry woodlands. 



Var. obliquum (Muhl) Clute. {B. ohliquum Muhl.) Coarse- 

 LOBED Grape Fern. 

 Same habitats as B. dissectum, often in close association 

 with it. 



Var. tenuifolium (Underwood) Farwell. 



Infrequent, in moist woods and thickets; known from Talbot^ 

 Dorchester, Wicomico and Worcester Counties. 



B. virginianum (L.) Sw. Rattlesnake Fern. 



Frequent throughout, in meadows and rich woods. 



OSMUND ACE AE (Flowering Fern Family) 



Osmunda L. 

 \Jt>. regalis L. var. spectabilis (Willd.) Gray. Royal Fern. 

 Common throughout, in meadows, swamps and wet woods. 



O. Claytoniana L. Interrupted Fern. " 



Woods and swamps; frequent in the Piedmont; rare on the 

 Coastal Plain: dry woods near Wattsville (Ac), {A. V. Smith), R. R. 

 Tatnall, 4354, 10 Aug. 1939 (A). 



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