476 Eaton : Pteridophytes observed in Florida 



grow in such a way as to conceal them, then spread radially. My 

 largest fronds are 3.5 cm. wide and 27 cm. long, exclusive of the 

 stipe. There are sometimes 70 in a cluster. This is the species 

 that heretofore has been known as A. myriopliyllum, which appears 

 to be distinct. I have not been able, however, to distinguish it 

 from A. monteverdense Hook, of Cuba. 



Dryopteris ampla (H. & B.) O. Kuntze 



* 



Rootstocks erect, often 4-5 dm. high and 5-7 cm. thick, cov- 

 ered with fine, loose, ferruginous, woolly scales ; stripes in a 

 crown at the end of the rootstock, erect, 4-8 dm. long, densely 

 clothed below with woolly, ferruginous scales 3-4 cm. long and 

 more sparingly above with short hairy scales; fronds triangular, 

 3—7 dm. long, by nearly as broad at base, quadripinnatifid at the 

 base, tripinnatifid above ; rachises and principal veins clothed with 

 light-brown hairy scales, and a shorter, fine puberulence; texture 

 thin and herbaceous ; lower pair of pinnae much the largest, peti- 

 oled, anadromous with one to three, but usually two, secondary 

 pinnae on the upper side before there are any on the lower ; the 

 first lower secondary pinnae much the largest, but the others of 

 the lower side gradually reduced till they equal the upper ones 

 near the tip of the pinnae ; upper pinnae catadromous ; second- 

 ary pinnae lance-triangular to linear-lanceolate, acute ; segments 

 linear-oblong, rounded, entire or crenate, the lower ones incised ; 

 sori small with fugacious indusia, in a single row on each side of 



the nerves of the ultimate segments. 



In Costello's and Ross's hammocks, and another small ham- 

 mock in pine woods a mile northeast of Colwell's. A very strik- 

 ing large fern with a texture much like D. novcboracense, quite 

 easily taken for a Phegopteris because of the very fugacious indu- 

 sium. It is found throughout the West Indies and southward to 

 Ecuador. 



Dryopteris floridana (Hook.) O. Kuntze 



Apparently absent or rare in the southern counties of the 

 state. I saw it in Florida only in the rich hammock at Oviedo, 

 where I made a stop of one day. In company with Mrs. A. P. 

 Taylor, I had previously found it at Thomasville, Georgia, which 

 proves to be its most northerly extension. It is a noble and 

 beautiful fern, recalling* D. cristata Clintoniana in asnert. 



