LYCOPODIACE^. 671 



A. serratum, L. Frond entire, acute, long-tapering at the base, P-2^ 

 long, the margins wavy and serrate ; sori linear, on the lower third of the 

 veins. — Eastern coast of South Florida ( Garber, Curtiss). — Stipe short and 

 rigid. 



ASPIDIUM, L. 



A. conterminum, Willd., var. strigosum, Eaton. Rootstock thick, 

 erect; stipe short and scaly ; frond l^°-3° high, oblong-lanceolate, attenuate 

 at each end, pinnate ; pinnas very numerous, lanceolate, acuminate, sessile, 

 pinnatifid, the lower ones gradually reduced, the segments obliquely acute, 

 the lowest ones often elongated ; sori small, in a single marginal row. — Polk 

 County, Florida {J. D. .Smtth). 



A. unitum, var. glabrum, Mettenius. Stipe long and slender, from a 

 slender creeping rootstock ; frond rather rigid, smooth, ovate-lanceolate, 

 pinnate, l|°-2° long; pinnse lanceolate, pinnatifid-lobed, the lobes rounded ; 

 lower veins of contiguous lobes united ; sori forming a continuous zigzag 

 intramarginal line. — Boggy places. South Florida. 



A. trifoliatum, Swartz. Frond thin, cordate-ovate in outline, 3-lobed, 

 or 3-foliate, the ovate pinnae entire or 3-lobed, acuminate, the margins un- 

 dulate ; sori scattered; involucre peltate, orbicular. — Hernando County, 

 Florida (Curtiss). — Frond 1° or less long, barely longer than the slender 

 stipe. 



OPHIOGLOSSUM, L. 



O. palmatum, Plum. Frond thick and succulent, drooping, i' - 10' long, 

 stipitate from a short woolly rootstock ; sterile ones cuneate at base, simple, 

 or palmately 2-6-lobed, the lobes tongue-shaped, rarely forking; fertile 

 fronds 1- several at the top of the stipe, or along the basal margins of the 

 sterile frond, short-stalked, V long. — In the axils of the leaves of the Pal- 

 metto. South Florida. 



Order LYCOPODIACEiE. 



LYCOPODIUM, L. 



L. inundatum, L. Var. adpressum, Chapm. Size and habit of var. 

 pinnatum, but leaves thinner, entire, those of the spike, which is barely thicker 

 than its peduncle, closely appressed. — Damp pine barrens. 



Var. elongatum, Chapm. Sparingly branched (lJ°-2° long); leaves 

 subulate-attenuate, entire, spreading ; peduncle slender, erect or leaning 

 (10'- 15' long), the leaves scattered, those of the spike longer, spreading. — 

 Wet or overflowed banks, Apalachicola. 



L. cernuum, L. Stem forking near the base (6'- 12' long), the divis- 

 ions arcuate-recurved, and rooting at the tip, the short alternate branches 



