812 ORDER 158. LYCOPODIACEJE. 



3 L. sabineefolium Willd. GROUND FIR. St. elongated, creeping; branches 

 erect, short, dichotomoua, with fastigiate divisions; Ivs. imbricated and brandies 

 erect, terate-subulate, spikes peduncled by the attenuated and slightly leafy sum- 

 mits of the branches, cylindric, solitary, with cordate, acuminate bracts. White 

 Mts. and Brit. Am., creeping among rocks, with erect, numerously divided branches, 

 a few of the divisions terminating in spikes an inch in length. July. (L. chamae- 

 cyparissus Braun.) 



4 L. Carolinianum L. SOUTHERN GROUND-PINE. St. and brartches creeping ; 

 Ivs. lanceolate, entire, appearing 2-ranked, the lateral rows spreading with 

 the 2 intermediate rows appressed ; peduncle erect, solitary, elongated, bearing a 

 single spike ; bracts sublanceolate, entire. In muddy grounds, N. J. to Ga. Both 

 the stem and its branches are prostrate, with erect, slender peduncles 3 6' high. 

 July. 



5 L. dendroideum Michx. TREE CLUB Moss. GROUND PINE. St. erect; 

 branches alternate, crowded, dichotomous, erect ; Ivs. linear-lanceolate, in 6 equal 

 rows, spreading ; spikes several or many, 1 on each branchlet. 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 arrange- 

 ment. Spikes 2 6, an inch long. July. 



(3. OBSCURUJI. (L. obscurum L.) Branches spreading ; spike one. 



6 L. annotinum L. 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, N. Eng., 

 Can. 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 branch. July. 



7 L. alopecuroides L. FOX-TAIL CLUB Moss. St. creeping, subramous; 

 branches simple, long, ascending, bearing a single sessile spike at top ; Ivs. linear- 

 subulate^ ciliaie-dentate at base, spreading ; spike leafy. Swamps, N. J. to Fla. and 

 La. Stein extensively creeping. Branches 6 16' high, rarely subdivided, densely 

 clothed with a fine, soft foliage. Spike 1 2' long, very leafy. Aug. 



8 L. inundatum L. MARSH CLUB Mosa St. creeping, often submersed; 

 branches simple, solitary, erect, with a single leafy spike at top ; Ivs. linear, scat- 

 tered, acute, entire, curved upwards. In swamps, Can. to Car. 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. 



9 L. lucidulum MX. SHINING CLUB Moss. St. ascending, dichotomously 

 divided ; Ivs. in 8 rows, linear-lanceolate, denticulate, shining, spreading, or a little 

 reflexed ; sporanges in the axils of leaves not changed nor crowded into a spike. 

 In wet woods, U. S. and Can. The foliage of this species is dark green and 

 shining, more ample than is common to the genus. Stems 816' long, nearly 

 erect. Leaves 3 5" long, distinctly serrate. Thecae hemispherical or reniform, 

 in the axils of the leaves near the top of the stem. Jl. 



10 L. Selago L. FIR CLUB Moss. St. erect, dichotomously and fastigiately 

 branched; Ivs. scattered, imbricate, lance-linear, entire, rigid and pungent, but 

 awnless. A smaller species than the last, found on the summits of the White 

 Mts. Stems 2 to 6', branches compact, densely clothed with stiff, shining, spread- 

 ing leaves arranged somewhat in 8 rou-s and 2 3" in length. Sporanges axil- 

 lary. Aug. 



2. SELAGINEL'LA, Spr. DWARF CLUB Moss. Fruits of two kinds, 

 viz., antheridia, which are 1 -celled, opening at apex; and oophoridia 

 containing 1 to 4 (rarely 6) globous angular grains. Habit various. 

 Spikes quadrangular. Bracts in 4 rows. (Lycopodium L.) 



Leaves all alike, many ranked, surrounding the stp.m Nos. 1, 9 



Leaves 4-ranked, those of the lateral rows much larger Nos. 8, 4 



1 S. rupeatre Spr. Stems in dense, branched tufts, ascending, subdivided; Ivs. 

 scattered, imbricat?, linear-lanceolate, capillaceous-acuminate, ciliate; spike soli- 



