626 CLXIII. LYCOPODIACE^E. LYCOPODIUM. 



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 and its branches are prostrate, with erect, 

 slender peduncles 3 6' high. July. 



4. L. RABIN.EFOLIUM. 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 Club 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. L.} Branches spreading; spike mostly 

 solitary. 



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 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 leafy. 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, 68' 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 1' long, at the summit of 

 branches which are 5 7 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-leaved 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 f ' 

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

 about a line in length. Branches 36' high, the sterile ones much divided. Jl. 

 * * Spikes sessile, -j-f Leaves %-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 



