CLUB-MOSS FAMILY. 373 



§ I. Fructification not in a distinct spike. Leaves all alike, dark-green, rigid, 

 in about 8 rows. 



L. lucidulum. Damp woods N. : stems 4' - 8' long, tufted, ascending, 

 forldng ; leaves spreading or reflexed, sharp-pointed, irregularly serrulate, dark 

 green and shining. 



§ 2. Fructijication spiked at the top of an erect branch .-fertile leaves and those of 

 the creeping stems nearly alike, soft, narrowly linear, many-rowed. 



L. alopecuroides. Pine-barren swamps, New Jersey & S. : scarcely ever- 

 green : stem and sparingly forked sterile branches creeping, fertile ones G' - 1 8' 

 high, all rather stout and thickly clothed with spreading st)ft linear-awl-shaped 

 bristly-ciliate leaves, those of the spike with long slender tips. 



• § 3. Fructification spiked: the fruiting haves yellowish, scale-like, shorter and 



broader than those of the sterile brandies. 



« Spike sessile at the top of an ordinary branch. 



L. anudtinum. Cold woods N. : stem creeping, l°-4° long; branches 



4' -9' high, nearly erect, once or twice forked ; leaves about 5-rowed, spreading 



or reflexed, rigid, lanceolate, acute, nearly entii'e ; those of the solitary spikes 



ovate, with spreading points and ragged scarious margins. • 



L. dendroldeum, Gkound-Piite. Moist woods, common N. : rootstock 

 creeping, under-ground, nearly leafless ; stems looking much like a miniature 

 hemlock, 9' -12' high; the many spreading branches with shining lanceolate 

 entire leaves in about six rows ; leaves of the lower and often of the upper row 

 smaller than the rest ; spikes single, or 4-10 on a plant; scales ovate pointed, 

 margin slightly scarious, nearly entire. 



« « Spikes raised above the ordinary branches on a slender stalk which has only a 

 few inconspicuous leaves. 



■*- Stems creeping, very short : spikes always single. 

 Ii. Carolini^Uin. Wet pine-barrens, New Jersey and S. : scarcely ever- 

 green ; stem and prostrate branches rooting underneath ; leaves soft, lanceolate, 

 entire, spreading horizontally, with an upper appressed row ; spikes slender on 

 stalks 4' - 6' high. — Allied in habit to L. alopecuroides. 



^- ^- Stems extensively creeping: spikes often in pairs or Jours. 



Xi. clavktum. Club-moss. Common N. in dry woods : running stem long 

 and leafy ; branches mostly erect, cordlike, irregularly pinnate ; branchlets 

 4-10, thickly covered with linear-awl-shaped entire commonly bristle-tipped 

 leaves ; spikes mostly in pairs. 



Ii. COmplau^tum. Dry woods, commonest among evergreens : running 

 stems with scattered awl-shaped very small leaves ; branches erect, several times 

 branched i the parts repeatedly forked into many horizontally spreading flat- 

 tened branchlets. 



2. SELAGINELIiA. (Name a diminutive of Sdago, a species ofLyco- 



podium. ) Species over 200, the greater part tropical. 

 § 1. Native species. 



S. rup^stris. Exposed rocks : a common moss-like little evergreen ; stems 

 and densely tufted branches l'-2' high ; leaves awl-shaped, marked with a nar- 

 row furrow on the back, and tipped with a minute bristly point ; spikes four- 

 cornered. 



S. dipus. Damp places in meadows; common, especially S. : very delicate; 

 stems 2' - 4' high, sparingly branched ; leaves 4-rowed, those of the side rows 

 spreading horizontally, scarcely 1" long, ovate with the upper side larger, mi- 

 nutely serrulate ; intermediate ones half as large, erect, very acute ; spikes 

 2'' -6" long. — Often cult, as S. densa. 



§ 2. Cultivated, mostly tropical species, seen in conservatories: much brandied: 

 leaves of the branches four-rowed, two side rows of spreading leaves set ap- 

 parently, edgewise, and two upper rows of smaller appressed leaves. Spike 

 four-cornered, at the ends of the hranchlets. 



