LtCOPODIACEvE. 183 



1. L,YCOPO'DIUM, L., Spring. CLUB-Moss. 



1. L. luci'dulum, Michx. Stems 4-8 inches long, tufted, 2 

 or 3 times forking. The leaves forming the spike not different 

 from the others on the stem ; all spreading or reflcxed, sharp- 

 pointed, serrulate, dark green and shining. Cold, moist woods. 



2. L. anno'tinum, L. Stems creeping, 1-4 feet long. 

 Branches 4-9 inches high, once- or twice-forked. Spike sessile, 

 the leaves of it yellowish and scale-like, ovate or heart-shaped, 

 the others spreading or reflexed, rigid, pointed, nearly entire, 

 pale green. Cold woods. 



3. L. dendroi'deum, Michx. (GROUND PINE.) Rootstock 

 creeping underground, nearly leafless. Stems much resembling 

 little hemlocks, 6-9 inches high ; numerous fan-like spreading 

 branches with shining lanceolate entire leaves. Spikes nearly as 

 in No. 2, 4-10 on each plant. Moist woods. 



4. L. clava'tum, L. (CLUB-Moss.) Stem creeping or running 

 extensively. Spikes mostly in pairs, raised on a slender peduncle 

 (4-6 inches long). Leaves linear, awl-shaped, bristle-tipped. 

 Dry woods. 



5. L. COmplana'tum, L. Stem creeping extensively. Branches 

 flattened, forking above, the branchlets crowded. Leaves awl- 

 shaped, small, in 4 ranks. Dry woods ; mostly with evergreens. 



2. SEIjAGINEI/IjA, Beauv., Spring, 



S. rupes'tris, Spring. A little moss-like evergreen, growing 

 on exposed rocks in dense tufts 1-3 inches high.* Leaves awl- 

 shaped, with a grooved keel, and tipped with a bristle. Spikes 

 4-cornered. 



