LYCOPODIACE^E. 461 



when the plant is advanced. Spike solitary, about an inch long. 

 Resembles L. sabinafolium, but may be distinguished by it 

 leaves. 



7. L. inundatum Linn. . stem creeping, somewhat branching ; 

 branches simple, solitary, erect, with a single sessile leafy spike at the 

 extremity ; leaves linear, scattered, acute, entire, curved upwards. 



HAB. Cedar swamps. Can. to N. Y. Pursh. N. to Hudson's 

 Bay. July. Lf. Flotoering branches subradical, 3 6 inches 

 long. Leaves linear, entire, with the floral ones somewhat di- 

 lated at base and spreading. Spike short, leafy. 



8. L. selaginoides Linn. : stem filiform, creeping ; branches sub- 

 erect, the flowering ones simple ; leaves scattered, lanceolate, some- 

 what spreading, ciliate-denticulate ; spike terminal, solitary, sessile, 

 leafy. 



HAB. Moist woods. Can. and N. S. July. If. Fertile branch- 

 es 2 4 inches high, nearly erect, yellowish- green. Leaves of 

 the fertile branches larger. Spike nearly an inch long, leafy. 



9. L. alopccuroides Linn. : stem creeping, somewhat branched ; 

 branches nearly simple, elongated, ascending, with a single sessile 

 leafy spike at the summit ; leaves linear-subulate, ciliate-dentate at 

 base, spreading. 



HAB. Sphagnous swamps. N. Y. to Flor. Aug. 2_f . Stem 

 long ; branches densely leaved, 6 8 inches high. Leaves nar- 

 row, shining and somewhat spreading. Spike solitary, more 

 than an inch long, very leafy. Walking Fern. 



10. L. rupestre Linn. : stem creeping, with ascending subdivided 

 branches ; leaves scattered, imbricate, linear-lanceolate, ciliate, ending 

 in hairs ; spike solitary, sessile, terminal. 



HAB. Rocks and side hills. Can. to Car. July. If A small 

 creeping plant of a grayish-green colour, differing much in ap- 



Eearance from the other species. Leaves many-rowed, ending in 

 airs, which give the summit of the branches a whitish aspect. 

 Spike short, square, and scarcely distinguishable from the stem 



below. 



.\ 



t Leaves 2-ranked. 



11. L. apodum Linn. : stem branching and rooting near the base ; 

 leaves 2-rowed, roundish-ovate, membranaceous, acute, denticulate, 

 flat ; with superficial ones alternate, acuminate ; spikes terminal, ses- 

 sile, subsolitary. and L. albidulum MuhL Willd. Pursh. 



HAB. Wet rocky places. N. Y. to Flor. July, Aug. lf.-;A 

 small creeping species, which can be recognized at once by its 

 2-ranked, thin and membranaceous leaves, Probably identical 

 with the foreign L. helveticum. 



*** Capsules axillary. 



12. L. lucidulum Mich. : leaves in 8-rows, linear-lanceolate, denticu- 

 late, acute, spreading or reflexed ; stem ascending, bifid ; fruit axillary, 

 not in a spike. 



39* 



