122 REPORT OF NEW JERSEY STATE MUSEUM. 



ccc. Sporanges under revolute edge of the pinnse or pinnules. Frond 

 branching out more or less horizontally from the stem. 

 d. Frond ternate, thick, singly or doubly pinnate, 3 dm. or more 

 across. Pteridium aquilinum, p. 130 



dd. Frond dichotojtnously branched, branches pinnate and ar- 

 ranged somewhat palmately; stem dark brown or black and 

 highly polished. Adiantum pedatum, p. 130 



Family OPHIOGLOSSAiCE.^. Adder's Tongues. 



OPHIOGLOSSUM L. 



Ophioglossum vulgatum L. Adder's Tongue. 



Ophioglossum vulgatum Linnssus, Sp. PI. 1062. 1753 [Europe.] — Britton 304. 



Keller and Brown 7. 

 Ophioglossum bulbosum Pursh II. 655. 

 Ophioglossum arenarium E. G. Britton, Bull. Torrey Club XXIV. SSS. 1897 



[Holly Beach, N. J.].— Keller and Brown 7. — J. Crawford, Bartonia I. 



18. 1909. 



Damp woods in the North and sparingly in the Middle dis- 

 trict ; local. Along the coast islands occurs a more slender form, 

 often with two or three stalks from the same root, which was 

 originally discovered by Mrs. E. G. Britton in sandy, shaded 

 ground at Holly Beach and described as a new species O. arena- 

 rium. The type colony has since been destroyed, but the form 

 has been rediscovered at Longport by Mr. Joseph Crawford and 

 on Long Beach Island by Mr. Bayard Long, growing in hollows 

 among the sand dunes. The drier exposed habitat is doubtle|S 

 responsible for the peculiar characters, which do not seem worthy 

 of recognition, as similar forms have been found in colonies of 

 true 0. vulgatum. 



Spores Mature. — Early June to early July, apparently some- 

 what later in the coastal plants. 



Middle DiifnV*.— Monmouth Co. (C), Hanover (C), Browns Mills (C), 

 Medford, Six miles west of Woodstown, Riddleton. 

 Coast. — Surf City (L), Longport, Wildwood. 



BOTRYCHIUM Swartz. 



Botrychium neglectum A. Wood. Meriden Grape Fern. 



Botrychium neglectum A. Wood, Classbook of Botany 1846. p. 635 [Meridan, 



N. H.].— Keller and Brown 8. 

 Botrychium matricariaefolium Britton 305. 



