N. ORD.-—LYCOPODIACEZ:. 480 
GENUS.—LYCOPODIUM,* LINN. 
SEX. SYST.-CRYPTOGAMIA LYCOPODINE#. 
LYCOPODIUM. 
CLUB MOSS. 
SYN.—_LYCOPODIUM CLAVATUM, LINN.; L. TRISTACHYUM, PERS; L. 
INTEGRIFOLIUM, HOOK. 
COM. NAMES.—COMMON CLUB MOSS, GROUND PINE, HOG’S BED, SNAKE 
MOSS, STAG’S HORN, WOLF’S CLAW; (FR.) PIED DE LOUP; (GER.) 
KALBEN-MOOS, GEMEINES BURLAPP. THE SPORES: VEGETABLE 
SULPHUR: (FR.) LYCOPODE, SOUFRE VEGETAL; (GER.) BURLAPP- 
SAMEN, BLITZ PULVER, WURM MEHL, HEXEN MEHL. 
A TRITURATION OF THE SPORES OF LYCOPODIUM CLAVATUM, LINN. 
Description This evergreen perennial extends to a length of 30 feet or 
more. Stem tough, flexible, terete, and very leafy, creeping extensively and strik- 
ing root at varied intervals; roots light yellow, wiry, solitary and straight; dranches 
ascending, similar to the stems, but short and subdivided, the fertile terminated by 
a fruiting peduncle. Leaves crowded, homogeneous, equal and many-ranked, all 
linear-awl-shaped, incurved, spreading, light green, and tipped by a long, incurved 
capillaceous bristle. Peduncle of the female branches erect, strict, 4 to 6 inches 
long, and bearing from 1 to 4, but usually 2, spikes; bracts sparse, somewhat 
appressed, tipped with a fine bristle ; spikes linear, cylindrical, blunt, erect, mostly 
in pairs, each composed of an axis and many closely appressed scales; scales 
ovate-triangular, closely imbricated, membranaceous, erosely denticulate, pedicelled 
and tipped by a filiform point. Spore-cases (theca) all of one kind, situated in the 
axils of the scales, all more or less flattened-reniform, coriaceous, 1-celled, and 
opening by a trans-marginal line down through even the pedicel, leaving each 
valve an individual stalk. Spores copious, very minute, together forming a very 
mobile, sulphur-yellow powder, which is described further on. 
—This family of low, moss-like plants, is represented in North 
America by 2 genera and 13 species ; its general characteristics are: stems herba- 
ceous or ligneous, simple or branched, and usually prostrate and extensively creep- 
ing. Leaves usually crowded, linear, simple, sessile, persistent, 1-nerved, and more 
or less appressed. /vactification axillary or spiked; sfore cases quite large, 
2-valved; spores generally copious and minute. 
Lycopodiaceez. 
* Asno;, lykos, a wolf; rods, todos, pous, podos, a foot; from a fancied resemblance, 
