LYCOPODIACEa;. 457 



6 — 8 inclies high, rarely subdivided, densely clothed with a fine, soft foliage. 

 Spike 1 — 2 inches long, very leafy. Aug. 



8. L. annoti'num. Interrupted Cluh Moss. 



Stem creeping ; branches twice dichotomous, ascending ; leaves in 5 rows, 

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

 oblong, solitary. In mountain woods. Branches subdivided near tlieir base, 

 brancTilets sinjple, 4 or more, (J — 8 inches high. Leaves at length refle.xed at 

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



9. L. inunda'tum. Marsh Club Moss. 



Stem creeping, often submersed; branches simple, solitary, erect, with a 

 single leafy spike at lop ; leaves linear, scattered, acute, entire, curved up- 

 wards. In swamps. Spikes^ — 1 inch long, at the summit of branches 5 — 7 

 inches 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 lines long. July. 



10. L. selaginoi'des. Savin-leaved Chtb Moss. 



Stem filiform, creeping; branches nearly erect, the flowering ones simple; 

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

 leafy. In moist woods. Spikes yellowish grecn,about J inch long, the bracts 

 foliaceous and twice larger than the true leaves, which are about a line in 

 length. Branches 3 — G inches liigh, the sterile ones much divided. July. 



* * Spikes sessile. 1 1 Leaves 2-ranked. 



11. L. A'PODUM. L. L. albidulum. Muh. 

 Stem branching, prostrate and rooting near the base ; leaves orbicular-ovate, 



acute, membranaceous, alternate, ample.xicuul, in 2 rows, with minute, acumi- 

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

 small, creeping, moss-like species, in wet, rocky shades. Stem a few inches 

 long, lilifonn. Leaves less than a line in length. Spikes leafy, scarcely 

 distinguishable from the branches. July. Aug. 



* * * Spikes indistinguishable from the branches. 



12. L. luci'dulum. Shining Club Muss. 



Stem ascending, dichotomously divided ; leaves in 8 rows, linear-lanceolate, 

 denticulate, shining, spreading or a little reflexed ; thecce in the a.xiis of leaves 

 not changed nor crowded into a spike. In wet woods. Tlie foliage of this 

 species is dark green and shining, more ample than is common to the genus. 

 Stems 8 — IG inches long, nearly erect. Leaves 3 — 5 lines long, distinctly 

 serrate. Thecte hemispherical or reniform, in the a.xiis of the leaves near Uie 

 top of the stem. July. 



13. L. sela'go. L. Fir Club Mo.is. L. recurvum. JVilld. 

 Stem erect, dichotomously and fastigiately branched ; leaves scattered, 



imbricate, lance-linear, entire, rieid and pungent, but awnless. A smaller 

 species than the last, found on the summits of the White Mts. Stems 4 — 8 

 inches high, densely clothed with stiff, shining, spreading leaves arranged 

 somewhat in 8 rows and 2 — 3 lines in length. Thecse axillary. Aug. 



2. ISOE'TRS. 

 Theca membranaceous, oblong, cordate, 1-celled, immersed 

 in the dilated base of tlie iVond ; spores subglobose, slightly 

 angular, attached to numerous tiliform receptacles. 



I. LACU'STRTS. Quill-WOTt. 



Fronds ccespitose, subulate, semiterete, dilated and imbricated at base. A 

 curious aquatic, in water at or near the margin of ponds and rivers. N.Y. N.H. 

 00 



