ORDER CXLII. LYCOPODIACE^E CLUB-MOSS-FAMILY. 



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3. L. obscVtrum. 



Spreading Club-moss, 



Stem erect, clothed by the linear-lanceolate leaves in 4 6 unequal rows ; 

 branches spreading, flat, the leaves on the upper side being shorter and ap- 

 pressed ; spikes 1 8, sessile, cylindrical. A common species in damp woods, 

 distinguished from the last, which it much resembles, by the spreading, almost 

 horizontal, flat branches. Stem 6' 8' high. Auff. 



4. L. clavatum. 



Ground Ivy. 



*/ 



Stems creeping, with short, ascending, densely leafy branches; leaves 

 linear-subulate, mucronate, spreading, curved upward ; spikes 28, apparently 

 pedunculate ; the leaves on the very slender foot-stalk being minute and nn- 

 cotispicnous. A common trailing evergreen, found in dry woods, distinguished 

 by its long, creeping stem, and short, ascending, densely leafy branches. July. 



5. L. complanatum. 



Ground Pine. 



Stem creeping; branches erect, ascending, compressed, dichotomous; 

 branchlets numerous, spreading, almost horizontal, compressed ; leaves minute, 



appressed, subulate, in 4 unequal rows, united by their decurrent base ; mar- 

 ginal row with slightly spreading tips; the other rows entirely appressed; 

 spikes 26, cylindric, pedunculate. A trailing evergreen, frequent in moist 

 woods, where it forms large beds. July. 



2. SELAGINfiLLA 



Sporangia of 2 kinds, the first are very minute, 1-celled, and 

 opening by 2 transverse valves ; the other kind larger, 3 6- 

 valved, and containing much larger spores. These 2 kinds are 

 either found in the same axils, or the larger are separate, in the 

 lower axils. 



1. S. rupestris. Rock Club-moss. 



Stem creeping, with many tufted branches ; branches ascending, densely 

 clothed with the scattered, linear-lanceolate, imbricated, appressed, grayish, 

 mucronate leaves ; spike leafy, 4-angled, with both kinds of sporangia in the 

 same axils. A grayish, moss-like plant, on rocks, of a somewhat stunted, dried 

 up appearance. Stems 2' 3' long. July. 



