638 LYCOPODIACE.E. (CLUB MOSS FAMILY.) 



ORDER 166. LYCOPODIACE^E. (CLUB Moss FAMILY.) 



Perennial plants, with solid branching and mostly creeping stems, 

 sparingly or thickly clothed with small, simple, sessile, awl-shaped or 

 linear leaves. Fructification consisting of 1-3-celled solitary spore- 

 cases, axillary, either along the main stem, or only in the axils of the 

 upper and mostly changed (bract-like) leaves. 



1. LYCOPODIUM, L. CLUB Moss. 



Sporangia of one kind, coriaceous, commonly kidney-shaped, opening trans- 

 versely into two valves and containing minute powdery spores. Perennial, 

 mostly evergreen plants ; the leaves imbricated in several or many rows along 

 the stem and branches. 



1. Sporangia borne along the stem, in the axi/s of uniform leaves. 



1. L. lucidulum, Michx. Stems ascending, forking, somewhat com- 

 pressed ; leaves (deep green) in several rows, linear-lanceolate, very acute, 

 sparingly denticulate, spreading or reflexed. Shady woods on the mountains 

 of North Carolina, and northward. Stem 6'- 12' long. Leaves glossy. 



2. L. SelagO, L. Stems short and thick, terete, clustered, erect or as- 

 cending, forking ; leaves in several rows, deep green, lanceolate, acute, entire, 

 the upper erect, the lower spreading. High mountains of North Carolina, 

 and northward. Stems 3'- 6' high, rigid. Leaves crowded. 



2. Sporangia in the axils of the upper leaves, forming a terminal terete bracted 



spike. 



* Bracteal and stem leaves alike, spreading. 



3. L. alopecuroides, L. Stem thick, terete, forking near the base, 

 recurved, and rooting at the apex, very leafy ; leaves in many rows, spreading, 

 subulate, bristly-fringed below the middle; peduncles erect, 6' -12' high, sim- 

 ilar to the stem ; spike thick, cylindrical, bristly from the spreading or re- 

 curved bracteal leaves. Open pine barren swamps, Florida to Mississippi, 

 and northward. Stems 1- 1| long, pale green. 



Var. adpressum. Stem 6' -12' long, creeping; peduncle 4' -6' high; 

 leaves entire, those of the spike, which is barely thicker than its peduncle, 

 closely appressed. Damp pine barrens. 



Var. elongatum, Chapm. Sparingly branched (l|-2 long); leaves 

 subulate-attenuate, entire, spreading; peduncle slender, erect or leaning (10'- 

 15' long), the leaves scattered, those of the spike longer, spreading. Wet or 

 overflowed banks, Apalachicola, Florida. 



4. L. inundatum, L., var. pinnatum, Chapm. Stem rather slen- 

 der, prostrate, creeping, pinnately branched ; 'leaves linear-subulate, bristly- 

 fringed below the middle, unequal, the upper and lower ones shorter and 

 somewhat appressed, the lateral ones widely spreading ; peduncle mostly soli- 

 tary, erect (1 high), very leafy; spike thick, cylindrical, 2'- 3' long. Low 

 pine barrens near the coast, West Florida. Stem 6' -15' long, and, with 

 the spreading leaves, $' wide. 



