468 Eaton : Pteridophytes observed in Florida 



durated, decurrent wing, not visible above, but set off from main 

 stipe below by a narrow groove; rachis narrow and costate below, 

 broad and flat above ; fronds smooth, coriaceous, shining, linear- 

 oblong to oblong-oblanceolate, 2-3 dm. long, 3.5-5.5 cm. wide, 

 often widest near the apex, then abruptly contracted into an 

 acuminate point 2 cm. l^ng, gradually attenuate at base, the mar- 

 gins entire or nearly so, with very narrow hyaline border ; veins 

 obscure, the free veinlets which arise from the united apices of 

 the cross-veins often continuous as a sub-nerve, dividing the space 

 between the main nerves into two quadrate areoles, each of which 

 bears one, sometimes two sori on the enclosed free veins. 



Differs from C. Pliyllitidis in its petioled fronds, and from C. 



latum principally by the scales of the rootstock, the flat stipes, 



the outline and coriaceous texture of the fronds. Abundant on 



trees, logs and cypress knees in a hardwood hammock in Fahka- 



hatchie cypress, June II, 1904 (no. 1135). Apparently local, as 



it was not seen in two trips of several days each into the cypress 



in March, 1905. 



Campyloneurum latum Moore * 



Rootstocks 2-7 cm. long, 5-7 mm. thick, green at the grow- 

 ing end, clothed with asymmetrically peltate, imbricated, irregu- 

 larly lobed, light seal-brown scales ; stipes 4-6, clustered, flat on 

 back, deeply centrally grooved above, slightly laterally grooved 

 when dry, the sides folding in in drying and covering the upper 

 surface, giving a triangular section ; leaf-scars 5 mm. long, in a 

 single row ; fronds oblong-lanceolate, broadest in the middle, 

 with sinuate, undulate or entire edges, 2—6 dm. long, 4-9 cm. 

 broad, obtuse or acuminate at apex, gradually or rather abruptly 

 contracted at base, smooth, dark-green above, lighter below, 

 usually with a small scar or gland on the upper side of the main 

 nerves near the base, the epidermis silvery-punctate about the 

 stomata ; midrib flat above, the back flattened below, the sides 

 strongly concave, the edges sharp, bearing a few orbicular to 

 oblong, basally peltate or deeply cordate scales along the sides ; 

 primary veins 5-7 mm. apart, the secondary irregularly anastom- 

 osing into 2-3 areoles, each of which may bear 1-3 free veinlets, 

 or the central none ; sori mostly in two rows between the main 

 nerves. 



Differs from C. Pliyllitidis \\\ the shape of the scales, the long 

 stipes and the shape and color of the fronds. Found about the 

 sides of a large lime-sink and on the bases of trees overhanging- 



S"*& 



