LYCOPODIACEit:. 



469 



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

 Beck Dot. \st. Ed. 



Rocky and mountain woods, Arct. Araer. to N. Y. W- to Miss. July. %..— 

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

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

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

 L. saUncBfolium of 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 %.—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. %.—Fertih branches 2—4 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. lucididum 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. %.—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 serai-circular, pale yellow 

 sessile in the axils of tlie 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. %.—Stem3—8mches 

 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. T<?rr,— 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, S. 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 rupestre Linn. 



Rocks and hill sides. Can. to Car, July, Aug. %.— Plant grayish-green. 

 Stems 1—3 inches long, much branched. Leaves ending in hairs, which give 



