626 CLXIII. LYCOPODIACEiE. Lvcopodium. 



3. L. Carolinianum. 



St. creeping ; Ivs. somewhat 2-ranked, spreading, lanceolate, entire ; ped. 

 erect, solitary, elongated, bearing a single spike ; bracts sublanceolate, entire. — ■ 

 In muddy grounds. Both the stem audits branches are prostrate; with erect, 

 slender peduncles 3 — 6' high. July. 



4. L. SABiN^FOLiUM. Willd. (L. alpinum. Mx.) 



St. elongated, creeping ; branches erect, short, dichotomous, with fastigiate 

 divisions ; Ivs. imbricated on all sides, erect, terete-subulate, aristate-acuminate ; 

 spikes peduncled by the attenuated and slightly leafy summits of the branches, 

 cylindric, solitary, with cordate, acuminate bracts. — White Mts. ; extensively 

 creeping among the rocks, with erect, numerously divided branches, a few of the 

 divisions terminating in spikes an inch in length. July. 



* * Spikes sessile j- Leaves surrounding the stem. 



5. L. DENDROiDEUM. Michx. Tree Cliib Moss. 



St. erect; branches alternate, crowded, dichotomous, erect; Ivs. linear- 

 lanceolate, in 6 equal rows, spreading; spikes numerous, solitary. — An elegant 

 little plant, common in woods, readily distinguished by its upright, tree-like 

 form. Plant about 8' high, with branches more or less diverging. These are 

 subdivided into numerous, forked branchlets, radiant, so as together to represent 

 a spiral arrangement. Spikes 2 — 6, an inch long. July. 



/? obscurum. Torr. (L. obscurum. Z/.) Branches spreading; spike mostly 

 solita^}^ 



6. L. RUPESTRE. Rock Club Moss. 



St. creeping ; branches ascending, subdivided ; Ivs. scattered, imbricate, 

 linear-lanceolate, capillaceous-acuminate, ciliate ; spike .solitary, quadrangular. 

 —A very small species, creeping on rocks, &c. Stem a few inches in length, 

 with numerous branches, which are J — 1' long, clothed with grayish-green 

 leaves. Spike §' long, 4-rowed, seeming a mere continuation of the branch. Jl. 



7. L. ALOPECURoiDES. Fox-tail Club Moss. 



St. creeping, subramose; branches simple, long, ascending, bearing a 

 single sessile spike at top ; Ivs. linear-subulate, ciliate-dentate at base, spread- 

 ing; spike \ea.fy. — Swamps. Stem extensively creeping. Branches 6 — 8' high, 

 rarely subdivided, densely clothed with a fine, soft foliage. Spike 1 — 2' long, 

 very leafy. Aug. 



8. L. ANNOTiNUM. Interrupted Club Moss. 



St. creeping ; branches twice dichotomous, ascending ; Ivs. in 5 rows, 

 linear-lanceolate, mucronate, spreading and serrulate near the tip ; spike oblong, 

 solitary. — In mountain woods, not common. Branches subdivided near their 

 base, branchlets simple, 4 or more, 6 — 8' high. Leaves at length reflexed at 

 end. Spike rather cylindric, an inch in length, distinct from the branches. Jl. 



9. L. INUNDATUM. Marsh Club Moss. 



St. creeping, often submersed; branches simple, solitary, erect, with a 

 single leafy spike at top ; Ivs. linear, scattered, acute, entire, curved upwards. — 

 In swamps, Mass., N. Y., Can., &c. Spikes J — 1' long, at the summit of 

 branches which are 5 — 1' long, arising from the base of the stem. Bracts of 

 the spikes leaf-like, dilated at base, spreading at the end, larger than the stem 

 leaves which are 1 — 2" long. July. 



10. L. sELAGiNolDES. Savin-kaved Club Moss. 



St. filiform, creeping; branches nearly erect, the flowering ones simple; 

 Ivs. scattered, lanceolate, a little spreading, ciliate-denticulate ; spike solitary, 

 leafy. — In moist woods, N. States and Can. Spikes yellowish-green, about J' 

 long, the bracts foliaceous and twice larger than the true leaves, which are 

 about a line in length. Branches 3 — 6' high, the .sterile ones much divided. Jl. 

 * * Spikes sessile, -f-f Leaves 2-ranked. 



11. L. APODUM. (L. albidulum. Muhl.) 



St. branching, prostrate and rooting near the base ; Ivs. orbicular-ovate, 

 acute, membranaceous, alternate, amplexicaul, in 2 rows, with minute, acumi- 

 nate, superficial ones in a third row on the upper side ; spikes subsolitary. — A 



