LTCOPODIACBiB. 671 



A. serratum, L. Frond entire, acute, long-tapering at the base, l°-2° 

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

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

 rigid. 



ASPIDIUM, L. 



A. contermmum, Willd., var. strigosnm, Eaton. Rootstock thick, 

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

 at each end, pinnate ; pinnae 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. Smith). 



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

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

 pinnate, l|^°-2° long ; pinnae 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, Hum. Frond thick and succulent, drooping, 4'- 10' long, 

 stipitate from a short woolly rootstock ; sterile ones ouneate 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, 1' long. — In the axils of the leaves of the Pal- 

 metto. South Florida. 



Obdbe LYCOPODIACE^. 



LYCOPODIUM, L. 



L. inundatum, T^. 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 (li°-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. cernaum, L. Stem forking near the base (6' -12' long), the divi.i- 

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



