812 Order 158.— LYCOPODIACEiE. 



3 L. sabinaefolium Willd. Ground Fir. St. elongated, creeping; branches 

 erect, short, dichotomous, with fastigiate divisions; Ivs. imbricated and branches 

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

 mits of Hie 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. chamai- 

 cyparissus Braun.) 



4 L. Carolinianum L. Southern Ground-Pine. Si. and branches 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 — & high. 

 July. 



5 L. dendroideum Miehx. Tree Club Moss. Ground Pine. St. erect; 

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

 roics, spreading; spikes several or maDy, 1 on each branchlet. — An elegant little- 

 plant, common in wood?, readily distinguished by its upright, tree-like form. Plant 

 about 8' high, with branches more or less diverging. These are subdivided into 

 numerous, forked branehlets, radiant, so as together to represent a spiral arrange- 

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



(J. obscuhum. (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, mucroaate, spreading 

 and serrulate near the tip; spike oblong, solitary. — In mountain woods, N. Eng., 

 Can. Branches subdivided near their base, branehlets simple, 4 or more, 6 — 8" 

 high. Leaves at length reffexed at end. Spike rather cylindric, an inch in 

 length, distinct from the branch. July. 



7 L. aropecuroides L. Fox-tail Club Moss. St. creeping, subramous; 

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

 subulate, eiUale-dentata at base, spreading ; spike leafy. — Swamps, N. J. toFla. and 1 

 La. Stem extensively creeping. Branches & — 16' high, rarely subdivided, densely 

 clothed with a tine, soft foliage. Spike 1 — 2' long, Tery leafy. Aug. 



6 I». inundatum L. Mars-ii Club Moss. St. creeping, often submersed; 

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

 tered, acute, entire, curved upwards. — In swamps, Can. to Car. Spikes i — 1' long,, 

 at the summit of brandies 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 thau 

 the stem leaves, which are 1 — 2" long. July. 



9 I». lucfdulum Ms. Shining Club Moss. St. ascending, dichotomously 

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

 reflexed; sporanges in 5he 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 8 — 16' long, nearly 

 erect. Leaves 3 — &" long, distinctly serrate. Thecal hemispherical or reniform. 

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



10 L. Selago L Fir CtUB Moss. St. erect, dichotomously and fastigiatelyt 

 branclied ; 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 C, branches compact, densely clothed with stiff, shining, spread- 

 ing leaves arranged somewhat in 8 rows and 2 — 3" in length. Sporanges axil- 

 lary. Aug. 



2. SELAGINELLA, Spr. Dwarf Club Moss. Fruits of two kinds, 



viz. r antlieridia, which are l-cqllixl, 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, rnany ranked, surrotiBsfTfrifr the stein Nos. 1, t 



§ Leave* 4-ranked, those of the lateral rows much larger Nos. 8, 4 



1 S. rupestre Spr. Stems in dense, brvmched tufts, ascending, subdivided; Ivs. 

 scattered, imbricate, linear-lanceolate, capillace-ous-acwninate, filiate; spiko soli- 



