LYCOPODIACE^E. 469 



var. montanum Tuckerman : low ; leaves in 4 rows. L. sabinafolium 

 Beck Dot. 1st. Ed. 



Rocky and mountain woods. Arct. Amer. to N. Y. W. to Miss. July. '2J.. 

 Stem often several feet in length, sending up ascending branches which are 

 6 8 inches high. Leaves rigid, light green, those of the stem shorter. Spike 

 about an inch long. I concur in the opinion expressed by Mr. Tuckerman, that 

 L. sabincefolium ol the previous edition is an alpine variety of this species. 



Interrupted Club-moss. 



5. L. obscurum Linn. : stem erect, much branched near the summit ; 

 branches alternate, subdivided, erect, or somewhat spreading ; leaves linear- 

 lanceolate, in 4 6 unequal rows, spreading ; spikes 1 3, sessile. L. den- 

 droideum Mich. 



Shady woods. Can. to Car. July 1\.. Stem 6 9 inches high, bushy near 

 the summit, the branches dichotomously subdivided. Leaves entire, those of 

 the lateral rows longest. Spikes sometimes solitary, but occasionally 4 or 5, 

 about 2 inches long, somewhat tapering at the summit. Ground Pine. 



6. L. selaginoides Linn : stem filiform, creeping ; branches few, ascend- 

 ing, simple ; leaves scattered, lanceolate, somewhat spreading, ciliate-den- 

 ticulate ; spike solitary, sessile, leafy. 



Wet hill sides. Can. and N. S. ? July. %. Fertile branches 24 inches 

 high, nearly erect, yellowish-green, with, the leaves larger than those of the 

 sterile ones. Spike about an inch long. Lesser Alpine Club-moss. 



** Spore-cases axillary, scattered. 



7. L. lucidtdum Mich.: stem 2 3-forked, the branches ascending; 

 leaves in about 8 rows, linear-lanceolate, denticulate, acute, spreading or 

 reflexed. 



Moist shady woods. Can. to Car. July, Aug. 1|.. Stem mostly prostrate, 

 the branches 8 12 inches high. Leaves longer than in any of the preceding, 

 dark green and shining. Spore-cases subreniform or semi-circular, pale yellow 

 sessile in the axils of the leaves about an inch from top of the branches. 



Shining Club-moss. 



8. L. Selago Linn'. : stem erect, fastigiate, dichotomously branched ; leaves 

 in about 8 rows, linear-lanceolate, acuminate, entire, imbricate, rigid. 



Alpine summits. White Mountains N. H. Green Mountains, Vt. Whiteface 

 Mountain and Mount Marcy, N. Y. Arct. Amer. July. %. Stem 3 8 inches 

 high, rigid, with the branches of the same thickness from the top to the base. 

 Leaves 3 5 lines long, dark green, shining, rigid. Spore-cases in the axils of 

 the leaves, reniform, yellowish. Fir Club-moss. 



2. SELAGINELLA. Spring. Torr. Selaginella. 



(The diminutive of Selago.} ^ 



Spore-cases of two kinds, 1 -celled ; some filled with minute 

 powdery matter, and opening at the apex ; others containing 

 1 4 rarely 6 globose-angular grains. 



1. & rupestris Spring: cespitose. with ascending stems ; leaves crowded, 

 imbricate, linear-lanceolate, ciliate, with a hair-like point at the tip ; spikes 

 terminal, sessile, acutely quadrangular. Lycopodium mpestre Linn. 



Rocks and hill sides. Can. to Car. July, Aug. Tj.. Plant grayish-greeu. 

 Stems I 3 inches long, much branched. Leaves ending in hairs, which aiv* 



