FILICES. (FERNS.) 635 



1. D. punctilobula, Kunze. Fronds delicate, slightly glandular- pubes- 

 ceut, as is the rachis, lanceolate-acuminate, 2- 3-pinnate; pinna; numerous; 

 pinnules oblong-ovate, closely placed, obtuse, piunately incised or pinnatifid ; 

 the divisions obtusely serrate, each one bearing a minute fruit-dot at the 

 upper margin. Moist shady woods in the upper districts. Rootstock 

 slender, extensively creeping. Fronds 2 -3 high, when crushed returning 

 a pleasant odor. 



22. TRICHOMANES, L. 



Sporangia with a transverse entire ring, arranged on the lower part of a 

 cylindrical, filiform, often elongated receptacle : involucres marginal, funnel- 

 shaped, or bell-shaped, entire or two-lipped at the mouth. Fronds delicate, 

 very thin and pellucid. 



1. T. Petersii, Gray. Very small, with entangled filiform tomentose 

 rootstocks; fronds oblong-lanceolate or obovate, entire or variously pinuatih'd, 

 narrowed into a slender stipe nearly as long ( as the frond, the younger ones 

 with a few black forked hairs along the margin; veins forked, pinnate from 

 the midrib ; involucre solitary, terminal, funnel-shaped, the mouth expanded 

 and slightly two-lipped, receptacle included. On the face of a sandstone 

 rock, sprinkled from a waterfall, Hancock Co., Alabama (T. M. Peters). 

 Also among some Mosses sent from Pensacola, Florida. Fronds less than an 

 inch high. 



2. T. radicans, Swartz ? Fronds pellucid, with a loose roundish areola- 

 tion, on a short broadly winged stipe, lanceolate or ovate-lanceolate, bipiunati- 

 fid ; pinnaj ovate or deltoid-ovate, obtuse, the upper side of the base parallel 

 and appressed to the winged rachis, the lower side cuneate ; divisions toothed 

 or divided into linear lobes ; involucres terminal on short lobes of the pinna;- 

 tubular-funnel-shaped, margined, at the mouth truncate and slightly two- 

 lipped ; receptacle exserted a little or very much. Mountains, Alabama to 

 East Tennessee. Rootstock slender, creeping, tomeutose with black hairs. 

 Fronds 4' -8' high, 12" -18" wide. 



23. LYGODIUM, Swartz. CLIMBING FERN. 



Sporangia beneath ovate hood-shaped imbricated indusia, in a double row 

 on narrow divisions of the fronds, attached laterally, ovate, with a many- 

 rayed apical ring. Fronds elongated, climbing, the branches usually in pairs 

 with a short common footstalk. 



1. L. palmaturn, Swartz. Fronds slender, pinnae deeply cordate at the 

 base, palmately 4 -7-lobed, the lobes oblong, obtuse, entire ; the upper pinna; 

 decompound and bearing the fruit on the very narrow segments. Low shady 

 woods, Florida, and northward ; not common. Rootstock very slender, creep- 

 ing. Fronds 2- 5 high, climbing on weeds and bushes. 



24. ANEIMIA, Swartz. 



Sporangia ovate, many-rayed at the apex, attached by the base in a double 

 row to the narrow one-sided paniculate divisions of the two lower branches of 

 the frond, or on separate fronds. Indusium none. Fronds erect, commonly 

 three-branched, the middle branch sterile and 1 - 3-pinnate. 



