LYCOPODIACEa;. 269 



* • stems evergreen, all aimilar, not branching, or only sUgMly ao. 



6. E. hyema'le, L. (Scoubing Rush.) Stems stout and 

 tall. Sheaths elongated, with a black girdle above the "base, 

 and about 20 narrow linear teeth, 1-keeled at the base, and 

 with awl-shaped deciduous points. — Wet banis. 



7. E. Iseviga'tum, Braun. Stems 1-4 feet high, rather 

 slender, pale green, 14^30-grooved, the ridges almost smooth. 

 Sheath slightly enlarged upward, with a black girdle at the 

 base of the white-margined teeth. — N.W. 



8. E. variega'tum, Schleicher. Stem slender, in tufts, 

 with 5-10 grooves, ascending; 6-18 inches high. Sheaths 

 green, variegated with black above, 5-10 toothed. — Shores 

 and river-banks. 



9 E. selrpoi'.des, Michx. Stem slender, very numerous in 

 a tuft, filiform, 3-6 inches high, curving, mostly 6-grooved. 

 Sheaths 3-toothed. — Wooded hill-sides. 



Obdek, CXIV. LYCOPODIA'CE.S;. (Club-Moss P. ) 



Chiefly moss-like plants ; often with long running and 

 branching stems, the sporangia solitary in the axils of the 

 mostly awl-shaped leaves. Spores all of one kind. 



lYropo'DIlTM, L. Club-Moss. 



^ Spore-cases in the axils of the ordinary dark-green rigid lanceolate 



leaves. 



1. L. sela'gO, L. Stemsereot and rigid, forking, forming 

 a level-topped cluster. Leaves uniform. — Atl. Prov. and 

 northward. 



2. L. lueid'Ulum, Michx. Stemsless rigid than the last, 

 forking. Leaves at first spreading ; then deflexed, arranged 

 in alternate zones of longer and shorter leaves. 



* * Spore-cases only in the axils of the npper bract-like leaves, forming 

 a spike. 



-t- Leaves of the spike not very different from those of the stem. 



3. L. inunda'tum, L. A low plant with weak, creeping, 

 sterile stems, and solitary erect fertile stems bearing a 



