Lycoropium. CLXUI LYCOPODIACEZ. 625 
high ; the fertile with 4—5 whorls of branches from the base of the sheaths 
which are 2—3’ apart, and cleft into several large, tawny red teeth or segments; 
the sterile taller and more slender, with more numerous whorls of branches, 
The branches are all subdivided and curved downwards. . Spike oval-cylindric, 
pedicellate. May. 
4. E. variecATuM. Smith. (E. scorpoides. Mz.) 
Czspitose; sts. branching at base, filiform, scabrous; spike blackish ; 
sheaths 3-toothed, blackish, teeth membranaceous, whitish, deciduous at the 
tips.— Hilly woods, Free States and Brit. Am. Stems numerous, 3—6’ long, 6- 
furrowed (5-furrowed. Beck), sheaths very short, 1—2/ apart. Spikes small, 
ovoid, terminal. Not common. July. 
5. E. prmésum. (EK. uliginosum. Willd.) Pipes. 
Sts. somewhat branched, erect, striate-sulcate; branches from the middle 
joints, simple, short, 5-sided, smooth ; ‘spike oblong-ovoid ; sheaths appressed.— 
Borders of ponds and swamps, frequent. Stems 2—3f high, slender, rarely sim- 
ple, generally with 2—6 whorls of branches about the middle. Branches very 
uregular in length and position. Sheaths 3—4” long, white at the summit, tipped 
with as many black, subulate teeth as there are furrows (15—20). This spe- 
cies is greedily devoured by cattle. July. 
6. E. parustre. Marsh Horsctail. 
Sts. branched, smooth, sulcate; branches simple, pentagonal, curved up- 
wards; sheath somewhat appressed, remote, 10-toothed at the apex; spike oblon ‘ 
dark brown.—Marshes, common. Stems 1—2f high, deeply furrowed. Branches 
short and like the ether species produced in whorls from the bases of the sheaths, 
at first horizontal, finally bending to an upright position. Spike an inch long. 
May, June. 
Orver CLXIIT. LYCOPODIACE A.—Cuvus Mosszs. 
Stems creeping or erect, branching, rarely simple, abounding in ducts. 
Leaves small, numerous, crowded, entire; lanceolate or subulate, 1-nerved. 
nflorescence axillary, or crewded irito a sort-of ament or spike. 
-Thece of two kinds in the same plant, sessile, 1, often 2-celled. —_ _ Tpowder. 
“Spores few, rather large in some of the thecz, other thecxe containing ‘minute grains, sipeutitie tke fine 
Like the Equisetacee, these plants appear to‘have been very abundant in the fist ages of ‘the world, 
and to have attained a gigantic size, fhough at present but afew feetin length. Properties unimportant. 
Some are emetic. The powder contained in the thece is highly inflammable, and is used in the manu- 
facture of fire-works. Genera 5, species 200. = 
Genera. - 
Leaves cauline, onerectorcreepingstems. - . » » «© «2 « « « « Lycopodiwn.1 
Leaves or fronds radical, long, linear-subulate. cate | 4 Tyoopa 2 
1,.LYCOPODIUM. 
Sy Gr. Xvr05, a wolf, Tous, a'foot; fromsome fancied resemblance. : 
Theee axillary, sessile, 1-celled, some of them 2-valved, filled with 
minute, farinaceous grains, others 3-valved, containing several larger 
globular spores. 
‘* Inflorescence in pedunculate spikes. 
1. L. cravatum. (L. tristachium. Nutt.) Common Club Moss. 
St. creeping ; branches ascending ;. lvs. scattered, incurved, capillaceous- 
acuminate ; spikes in pairs, rarely in 3s, cylindrical, pedunculate ; bracts of the 
spike ovate, acuminate, erosely denticulate——A well known evergreen, trailing 
upon the ground in shady pastures and woods, common. ‘Stem and branches 
‘clothed with numerous linear-lanceolate leaves which are entire or serrulate, 
and end in a pellucid, curved bristle. Spikes perfectly straight, parallel, erect, 
and upon an erect peduncle. July. 
2. L. coMpLaNatum. Ground Pine. 
St. trailing ; branches dichotomous; lvs. 4-ranked, unequal, the marginal 
ones connate, diverging at apex, the superficial ones solitary, appressed ; ped. 
elongated, supporting 4—6, cylindric spikes.—A trailing evergreen, common in 
woods and shady grounds. Stem round, creeping among the moss and leaves, 
often 10f in length. Branches numerously subdivided, compressed, somewhat 
resembling the branchlets of the cedar. Leaves minute, very acute. July. 
