GENUS I. 



CLUB-MOSS FAMILY. 



ii. Lycopodium sabinaefolium Willcl. 

 Cedar-like Club-moss. Fig. no. 



Lycopodium sabinaefolium Willd. Sp. PI. 5 : 20. 

 1810. 



Horizontal stems extensively creeping at or 

 near the surface of the ground and occasion- 

 ally branching, with numerous freely branched 

 assurgent aerial stems, the branches of these 

 2'-4' long, loosely clustered, dorsiventrally 

 flattened; leaves ascending, slender, subulate, 

 nearly equal, in 4 rows upon the terminal and 

 subterminal branchlets, those of the lateral 

 rows slightly larger, thicker and more widely 

 spreading than the usually subappressed leaves 

 of the upper and lower rows; peduncles f-2" 

 long, slender, bracteate, terminal upon the 

 main terete branches ; spikes mostly solitary 

 (casually 3), J'-ii' long, the sporophyls broadly' 

 ovate, acuminate, greenish, with scarious erose 

 margins. 



In cold mountain woods. Prince Edward Is- 

 land, Quebec, northern New England and Ontario. 



12. Lycopodium clavatum L. Running-pine. 

 Club-moss. Fig. in. 



Lycopodium clavatum L. Sp. PI. 1101. 1753. 



Main stems prostrate, extensively creeping (3-9) 

 along the ground, branching horizontally, with numer- 

 ous very leafy ascending pinnately branched aerial 

 stems ; leaves crowded, many-ranked, linear, bristle- 

 tipped, entire or denticulate, those of the main stems 

 strongly denticulate; peduncles stout, 2^-4*' long, 

 channeled, with slender whorled or scattered denticu- 

 late bristle-tipped bracts, simple or several times 

 forked near the summit ; spikes linear-cylindric, the 

 sporophyls deltoid-ovate, acuminate, or bristle-tipped, 

 the margins scarious, erose. 



In woods, Labrador to Alaska, south to North Caro- 

 lina, Michigan and Washington. Also in Europe, Asia 

 and tropical America. The spores of this species, and 

 those of L. complanatum, furnish the inflammable power 

 known as Lycopodium powder or vegetable. sulphur, used 

 in stage effects. Aug.-Oct. Called also running-moss. Fox- 

 tail. Buck's-horn. Buck's-grass. Staghorn-moss. Snake- 

 moss. Wolf's-claws. Ground-pine. Toad's-tail. Lamb's- 

 tails. Creeping-bur. Creeping Jennie. Coral-evergreen. 



13. Lycopodium carolinianum L. Carolina 

 Club-moss. Fig. 112. 



Lycopodium carolinianum L. Sp. PI. 1104. 1753. 



Stems short, i'-6' long, prostrate, pinnately branch- 

 ing, rooting below ; leaves strongly dimorphic, those of 

 the sides large, ovate-lanceolate, falcate, recurved, asym- 

 metrical, acute, those of the upper side smaller, subu- 

 late from a broad base; peduncles 2'-8J' long, slender, 

 with a few whorled or scattered subulate bracts ; spikes 

 iJ'-2' long, slender ; sporophyls deltoid, acuminate, entire 

 or somewhat erose. 



In moist pine barrens, New Jersey to Florida and Lou- 

 isiana near the coast. 



