Eaton: Pteridophytes observed in Florida 477 



Dryopteris patens (Svv.) O. Kuntze 



Very common throughout on the east coast, less so on the 

 west coast. Apparently prefers limestone in damp situations. 

 When growing in exposed places the pinnae often contract, at 

 first vertically, then spread and describe a half-circle at the tip, 

 being of precisely the appearance of D. simulate under similar cir- 

 cumstances. At ColvvelTs hammock I got a specimen with the 

 rachis, pinnae and indusia covered with glandular capitate hairs 

 instead of the usual long white pubescence. This may be known 



as variety glandulosa. 



Dryopteris reptans (Gmel.) C. Chr. 



(Phegopteris reptans D. C. Eaton) 



This interesting plant was abundant about the lime-sinks in 

 the hammocks of the Homestead region, and was extremely vari- 

 able. The normally fruiting plants resemble undersized D. para- 

 silica {Ncphrodium mollc), the aspect being similar and the vena- 

 tion identical. Other plants have few or no fruiting fronds, the 

 sterile ones filiform, pendent, 3-6 dm. long, frequently rooting 

 and giving rise to new plants. The sporangia are deciduous from 

 the persistent pedicels. The sori of my specimens possess small 

 indusia which are bristly-fringed on the edges. As the species is 

 closely related to D. parasitica, being put in a separate genus solely 

 on account of the absence of indusium, it seems best to treat it as 

 a Dryopteris. 



Dryopteris setigera (Rl.) O. Kuntze 



* 



Rootstock stout, creeping or assurgent, clothed with copi- 

 ous long-subulate, ciliate, dark-brown scales; fronds 8-10, the 

 stipes when fully developed 1 — 1 .5 cm. in diameter and 6 dm. 

 long, light-green with whitish cast as if pruinose, densely clothed at 

 base with scales like those of the rootstock, with an under tomen- 

 tum of short, white, bristly hairs, these sometimes on the scales; 

 also, naked above ; laminae 7-9 dm. long, membranaceous, tri- 

 angular-ovate, acuminate, quadripinnatifid, the second pair of 

 pinnae longest ; primary and scondary rachises smooth below, 

 grooved in each side above, the portion between the grooves, as 

 well as the costae of the ultimate pinnae, more or less densely 

 clothed with fine white bristle-like hairs ; primary pinnae oblong- 

 lanceolate, the largest 3-4 dm. long, 1 — 1.5 dm. wide, more or 



