MACLOSKIE: PTERIDOPHYTA, FERNS AND FERNLIKE PLANTS. 137 



Species existing above 100; abounding most in the Andes and Hima- 

 lehs ; some are cosmopolitan. 



LYCOPODIUM Linn. 



Roots fibrous, not tuberous. Leaves all cauline, small and simple, 

 usually imbricating. 

 Species about 100. 



L. CLAVATUM Linn. 



Main stem creeping, 30120 cm. or longer, leafy; sparingly rooting 

 and horizontally branching, and sending up aerial stems. Leaves 

 crowded, incurved, mostly bristle-tipped, the lower toothed, the upper 

 subentire. Spikes 1-4, cylindrical, on long, 8-striate peduncles. Spore- 

 cases reniform. (B. & B., I, p. 43.) 



(Eurasia ; N. Amer. to S. Amer.) 



L. CLAVATUM FASTIGIATUM Hook. 



Branches erect, fastigiate. 

 Patagon., Fuegia to Cape Horn. 



L. CLAVATUM MAGELLANICUM Hook. 



Leaves more or less curved, apical ly awnless. 1 Spike solitary and ses- 

 sile in starved alpine specimens ; 2 or more on a peduncle in others. 

 Bracts ovate-lanceolate, acuminate. 



(Auckland I.; Campbell's I., Kerguelen) ; Falklands; Patagonia, 

 Fuegia to Cape Horn (by Hatcher). 



L. CONFERTUM Willd. 



Stem appressed, about 45 cm. long, rooting and branching ; the branches 

 alternate, to 5 cm. long, and alternately branching. Leaves sparse or 

 crowded, linear-lanceolate, acute, secund. Spikes solitary, sessile on ends 

 of ascending branches, 12 mm. long, leafy; their leaves exceeding those 

 of the stem. 



(Chili) ; Patagonia. 



1 In Lloyd and Underwood's Review of N. A. Species of Lycopodium (Torr. Bull., Ap., 1900) 

 this awnless condition of the leaves is mentioned as characterizing L. clavatum Linn, when found 

 in the northwest of North America. 



