222 THE KK.KN ALLIES. 
1. 8. spinosa, Palisot de Beauvais Stem prostrate, 
branches erect, nearly simple ; leaves scattered lanceolate 
acute spinulose-ciliate spreading; spikes terminal. On 
mountain bogs. S. selaginoides, Link; Lycopodium 
selaginoides, Linneeus. 
LYCOPODIUM, Linnaus (in part) 
GF.N. CHAR. Fructification consisting of one-celled 
antheridia only no oophoridia. 
Antheridia scattered : leaves similar. 
1. L. Selago, Linnceus. Stem thick erect, forked ; 
leaves, in eight rows, crowded elongate lanceolate mu- 
cronulate, convex beneath. On mountain heaths. 
Antheridia collected into a spike : leaves conformable 
equal around the stem. 
2. L. Inundatum, Linn&us. Stem prostrate ; 
branches of two forms the sterile prostrate, the fertile 
simple erect; leaves scattered crowded spreading sub- 
incurved entire, furrowed beneath ; spike sessile inflated, 
bracts foliaceous. On boggy heaths. 
3. L. annotinum, Linnasus. Stem prostrate, the 
annual growth distinctly marked ; branches erect forked 
elongate ; leaves in five rows spreading or reflexed 
linear-lanceolate, irregularly subserrate pungent, nerved 
beneath; spike sessile terete. On stony mountains. 
4. L. clavatum, Linnaus. Stem prostrate, with 
distichous branches ; leaves crowded in many rows, sub- 
secund, incurved imbricate, linear-subulate with a hair-like 
point, nerved on both sides ; spikes two or more, stalked ; 
bracts suborbicular-acuminate, serrate. On heaths. 
Antheridia spiked: stem leaves of two forms. 
5. I*, alpinuxn, Linnaeus Stem elongate prostrate, 
with ascending flattened tufted branches ; leaves in four 
rows, imbricate, the lateral ones lanceolate -falcate acute 
