1 88 Club-Moss (Lycopodiacece). [No. 27 



Fruit, one-celled, kidney-shaped spore-cases, in the angles 

 of the upper leaves or scales (forming more or less 

 distinct spikes that are sometimes sessile at the ends 

 of the branches and sometimes stalked), filled with 

 yellow inflammable dust-like spores. 



Low evergreen perennials. The spore-dust is very in- 

 flammable, and is used in the manufacture of fireworks. It 

 is also sold by druggists under the name of Lycopodium 

 powder, to prevent the chafing of tender skin. 



GUIDE TO THE SPECIES. 



(a) Branches not flattened. Leaves around the branches 

 of one kind. 

 (b) Spikes stemless. (i) Interrupted Club-Moss (L. 



annotinum, L.). 

 (6) Spikes stemmed. (2) Common Club-Moss (L. 

 clavatum, L.). 

 (a) Branches much flattened. Leaves around the branches 

 of two kinds. (3) Festoon Ground-Pine (L. 

 complanatum, L.). 



Fig. 89. — (1) Interrupted Club-Moss. L. annotinum, L. 



Leaves, of the stem and branches alike, spreading, 

 minutely toothed near the tip, stiff, lance-shape, 

 pointed, in about five rows : those of the spikes, scale- 

 like, yellowish, egg-shape or heart-shape. 



Stems and branches, cylindrical, creeping, one to four feet 

 in length, much branched. Branches, erect, four to 

 eight inches in height, two- to three-forked, leafy 

 throughout. Spike, terminal, stemless, at the summit 



