LYCOPODIACEAE. 13 



Family 5. LYCOPODIACEAE. 



Plant somewhat moss-like in appearance, evergreen, usually 

 branching; stem solid; leaves small, numerous, not whorled; 

 spore-cases on the upper surfaces or in the axils of the leaves; 

 spores of one kind. 



20. LYCOPODIUM. GROUND-PINE. 



Perennial, terestrial plants, with evergreen 1 -nerved leaves, 

 arranged in 4-16 ranks; spore-cases flattened, 1-celled, in the 

 axils of ordinary leaves or of bracts arranged in spikes; spores 

 abundant, minute, sulphur-yellow. 



Sporangia in the axils of ordinary leaves. 



Sporangial leaves forming a terminal spike. L. inundatum, 



Sporangial leaves subterminal, the terminal leaves sterile. 



Stems rigid; leaves all alike, ascending. L. selago. 



Stems not rigid; leaves spreading, of two sorts, long 



and short. L. lucidulum. 



Sporangia in the axils of modified leaves which are crowded in 



spikes. 

 Sterile branches flattened, the leaves on the under side 



reduced. 

 Stems of the fruiting branches leafy to the spikes or 



nearly so. L. obscurum. 



Stems of the fruiting branches with much reduced 



leaves. L. complanatum. 



Sterile branches not flattened, the leaves uniformly 



spreading. 



Stems of the fruiting branches nearly naked. L. clavatum. 



Stems leafy up to the spikes or nearly so. 



Leaves 6-8-ranked, spreading. L. annotinum. 



Leaves 5-ranked, appressed. L. sitchense. 



Lycopodium inundatum L. Stems creeping close to the earth, 3-12 cm. 

 long; fertile branches erect, 2-10 cm. high, bearing solitary spikes; sporangial 

 leaves like the sterile, lanceolate or awl-shaped, with thin margins. 



In bogs, Olympia, Henderson; Spanaway Lake, Flett; Vancouver, British 

 Columbia, Macoun. 



Lycopodium selago L. Stems ascending or erect, rigid, not creeping, 6-10 

 cm. high; leaves all alike, broadest at the hollowed base, acuminate or mucron- 

 ate, closely appressed, some of them commonly bearing a bulblet in the axil; 

 terminal leaves sterile, those just below bearing spore-cases. 



Common in the mountains at 1500-2800 m. elevation. 



Lycopodium lucidulum Michx. Stems decumbent at base, 10-30 cm. high, 

 simple or sparingly branched; leaves spreading or deflexed, linear-obovate, 

 denticulate, acute, in alternate zones of longer and shorter leaves, the latter 

 most commonly bearing the sporangia. 

 . In deep woods, rare. 



Lycopodium obscurum L. Stems erect, branched above, arising at inter- 

 vals from subterranean rootstocks; leaves 6-ranked, linear-lanceolate, entire, 

 acute, the lateral with spreading tips, the two upper and the lower ranks 



