418 101. LYcOPODIACEA. 
with 2 or 3 valves and no ring, including minute powdery matter 
or sporules. 
* Capsules not opening. 
1, Isonres. Fructification inclosed within the swollen base 
of the leaves. Sporules of two kinds attached to filiform 
receptacles. 
** Capsules bursting. 
2. Lycoropium. Caps. 1-celled, 2-valved, containing pow- 
der ; or 3-valved, containing 1—4 granules. 
1. Isozres Zinn. Quillwort. 
1. I. lacustris (L.) ; 1. subulate roundish-quadrangular with 4 
longitudinal jointed tubes.—F. B. 1084. N.381. R. vii. t. 1. 
—Rhizome a blunt tuber. L. slender, broad and flat at the base 
but elsewhere between cylindrical and quadrangular.—Bottom of 
lakes and ponds in hilly districts. P. 
2. Lycoropium Linn. 
* Caps. all \-celled. Sporules like powder. Lycopopium Koch. 
]. L. clavatum (L.); 1. scattered incurved with a filamentous 
point, spikes stalked 2 or 3 together cylindrical, scales ovate- 
triangular membranous finely incise-serrate.—E. B. 224. N. 353. 
—St. prostrate, long. Branches short, ascending. Spikes on 
long stalks, pale yellow. Scales on the stalks irregularly disposed 
in whorls.—Heaths. P. VII. VIII. Common Clubmoss. 
2. L. annotinum (L.); 1. scattered lanceolate mucronate ser- 
tulate, spikes sessile solitary terminal, scales roundish with an 
attenuated point membranous and jagged.— E. B. 1727. N.361. 
—St. prostrate, long. Branches rather long, erect, each year’s 
growth marked by a spot where the leaves are adpressed. Spikes 
cylindrical, greenish-yellow, not persistent—Stony mountains. 
Rare in Caernarvonshire and Cumberland. Common in the 
Highlands of Scotland. P, VIII. 
3. L. alpinum (L.); 1. in four rows imbricated acute keeled 
entire, spikes sessile solitary terminal, scales ovate-lanceolate 
flat, branches erect. clustered forked level-topped.—E. B. 234. 
N. 365.—St. prostrate, long. Fertile branches usually twice di- 
chotomous, each division ending in a short cylindrical yellowish- 
green spike rather thicker than the branch.—Elevated mountains. 
P. VIII. Savin-leaved Club-moss. 
4. L. Selago (L.); 1. in eight rows crowded uniform linear- 
lanceolate acuminate, caps. not spiked but in the axils of the 
common leaves, st. erect forked level-topped.— FE. B. 233. N.375. 
—St. short, erect or slightly decumbent, densely leafy. No se- 
