174 3Iorn's — Some Pluiifti of AVest ^^ir;/>ta'(f. 



Pteridophyta. 



Polypodiaceae. 



Polypodium vulgare oreophilum Maxon, subsp. nov.* 



Rhizoma slender, extensively creeping, covered thickly with 

 spreading chatT: stipe 5 to 8 inches long, greenish to stra- 

 mineous; laminae very dark green above, lighter below, 7 to 11 

 inches long, 2i to 4 inches broad: pinnae distant from once to 

 twice their width, broadest in the middle and tapering to an 

 acute apex, the margin doubly crenate or occasionally nearly 

 entire, the base broadly decurrent, veins sinuous and promi- 

 inent in drying, the veinlets usually forking twice: tip of 

 lamina long acuminate, as in /••. fakaium; sori very large, 

 often irregularly disposed. 



Type in the U. S. National Herbarium, Smithsonian Institution, 

 collected by E. L. Morris, No. 1215, on rocks, along the 

 Guyandot River below Baileysville, Wyoming County, W. Va., 

 alt. 1100-1250 feet, August 13-19, 1900. This fern has already 

 been briefly characterizedf by Dr. Millspaugh as Poli/j^odium 

 Tulgare forma hiserrata (sic). The name biserratum being al- 

 ready preoccupied by a Mexican fern:}: it becomes necessary, 

 in referring to the West Virginian plant, to substitute a new 

 name. In addition I would refer here Mr. Morris' 1207 col- 

 lected near the type station; also Pollard & Maxon's No. 25, 

 collected Aug. 21, 1899, at Quinnimont, W. Ya., which I have 

 previously referred! tentatively to the variety acutum Moore§. 

 From anitum it differs in the narrower and more spatulate 

 pinnae, and commonly in the double crenation, for acutvm is 

 normally with entire, or at most slightly serrulate, pinnae. 

 Mr. Morris states that typical rulgnre was common in the gen- 

 eral region; from this it differs in its much greater size, its 

 scantier foliage, and in the shape of the pinnae. There are 

 in the National Herbarium at least two specimens, collected 

 in West Virginia and North Carolina, which with plants col- 

 lected at Great Falls, Fairfax County, Va., by William Palmer, 

 are to be regarded as intermediate with typical rulgare. Be- 

 cause of these it does not seem best to regard oreophilum as 

 entitled to specific rank. 



Selaginellaceae. 



Selaginella apus (L.) Spring. 



In a luxuriant mass among the grass and shrubs along the edge 



*Published by permission of the Secretary of the Smithsonian Institu- 

 tion. 

 fBuU. 24, W. Va. Exp. Sta., p. 479. 1892. 



XPohipodinm Imcrratnm M. & G. Mem. Foug. Mex. p. 38. 1842, 

 IIFern Bull. 8: .58. 1900. 

 i^Moore, Nat. Pr. Brit. Ferns, i: (53, pi. II, fig. a. 1859, 



