COMMON CLUB MOSS. 
105 
student of Cryptogamic botany. The Lycopodiums 
are associated in the minds of most who have not 
given attention to their structure, with the beautiful 
bright green club moss, so common in our conser¬ 
vatories and of such luxuriant growth, ordinarily 
known as Lycopodium. It is a foreign species and is 
not a Lycopod at all, but belongs to the Selaginellas. 
The British species of Lycopods are six in number 
only, and are not difficult to recognise. Originally 
the Selaginellas were included under the Lycopods, 
but they have been separated on account of the 
difference in their spore-cases. 
COMMON CLUB MOSS, OR WOLFS CLAW. 
L YCOPODIUM CLA VA TUM t 
Linnaeus. 
(Plate XVI. Fig. 2.) 
This is the most common of our British club mosses, 
creeping along the ground of our hills and moors. 
Its roots run along for many feet and interlace so as to 
form almost a perfect knotted sort of carpet. It is 
widely dispersed throughout Europe, and in Sweden 
the peasants weave door-mats from its stems and call 
it matted grass. 
The stems throw out pale wiry roots at short 
distances, which attach the plant firmly to the earth. 
The narrow leaves, each ending in a long hair, are 
