LYCOPODIACE/B. 269 



* * Stems evergreen, all similar, not branching, or only eUglitly so. 



6. E. hyema'le, L. (Scourixo Eush.) stems stout and 

 tall. Sheaths elongated, with a black girdle above the Tbase, 

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

 with awl-shaped deciduous points. — Wet banks. 



7. E. ISBViga'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'tura, 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. SCirpoi'des, Michx. stem blender, very numerous in 

 a tuft, filiform, 3-6 inches high, curving, mostly G-groove^. 

 Sheaths 3-toothed. — Wooded hill-sides. 



Obdbk CXIV. LYCOPODIA'CE^. (Club-Moss F. ) 



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. 



LYCOro'DIIi.'H, L. Club-Moss. 



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



, leaves. 



1. L. sola' go, L. stems erect and rigid, forking, forming 

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

 northward. 



2. L. lucid' Ulum, Michx. Stems less 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 upper bract-lilce leaves, forming 



a spike. 

 ■*- 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 



