LYCoroDiuM. CLXIII. LYCOPODIACE^. (^25, 



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 Avhorls of branches. 

 The branches are all subdivided and curved downwards. Spike oval-cylindric, 

 pedicellate. May. 



4. E. VARIEGATUM. Smith. (E. scorpoides. Mr.) 



Cmspitose ; 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 — G' long, 6- 



furrowed (5-furrowed. Beck), sheaths very short, 1 — 2' apart. Spikes small, 

 ovoid, terminal. Not common. July. 



5. E. LiMosuM. (E. uliginosum. Willd.) Pipes. 



Sis. somewhat branched, erect, striate-sulcate ; brandies from the middle 

 joints, simple, short, 5-sided, smooth ; spike oblong-ovoid ; sheaths appressed.— 

 Borders of ponds and swamps, Irequent. Stems 2— of high, slender, rarely sim- 

 ple, o-enerally with 2 — 6 whorls of branches about the middle. Branches very 

 irregiilar 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. PALUSTRE. Marsh Horsetail. 



Sis. branched, smooth, sulcate ; branches simple, pentagonal, curved up- 

 wards ; shealk somewhat appressed, remote, 10-toothed at the ape.x ; spike oblong, 

 dark brown.— Marshes, common. Stems l—2f high, deeply furrowed. Branches 

 short and like the other 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. 



OuDEr. CLXIII. LYCOPODIACEiE.— Club Mosses. 



Ste.ms creeriing or erect, branching, rarely simple, abountling in ducts. 

 Lenyfts small, numerous, crowded, entne, lanceolate or subu ate, 1-nerved. 

 Inflnrescence axillary, or crowded into a sort ot ament or spike. 



T^^ci^ftwo kin is iiUhe same plant, se.s^^^^^ • , • ■ ^IT"^^^- 



Spm-es few, rather large in some of the thecae, other theca; containmg mniute grains, appearing hke fine 

 T ik-P thi- Eouisetaceaj, these plants appear to have been very abundant in the first ages of the world, 

 and to have attained a gigantic size, though at present but a few feet in length. Properties unimportant. 

 Some are emetic. The powder contained in the theca; is highly inllammable, and is used m the manu- 

 facture of fire-works. Genera 5, species 200. 



Crcncra. 



Leaves cauline, on erect or creeping stems Lyc^odium. I 



Leaves or fronds radical, long, lincar-subulate Isoetis. 2 



1. LYCOPODIUM. 



Gr. XtiTTOj, a wolf, novi, a foot ; from some fancied resemblance. 



Tliecie axillary, sessile, 1 -celled, some of them 2-valved, filled with 



minute, farinaceous grains, others 3-valved, containing several larger 



globular spores. 



* Injinrescence in pedunculate spikes. 



1 L. CLAVATUM. (L. tristachium. NuU.) Common Club Moss. 



St. creeping; branches ascending; Ivs. scattered, incurved, capillaceous- 

 sicuminate • 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 sliadv 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. 



3 L. coMPLANATUM. Ground Pine. 



St trailing; branches dichotomous ; Ivs. 4-ranked, unequal, the margmal 

 ones connate diverging at apex, the .superficial ones solitary, appressed; ped. 

 elono-ated supporting 4—6, cvlindric .spikes.— A trailing evergreen, coiiimon m 

 woods and shady grounds. Stem round, creeping among the moss and leaves, 

 often lOf in length. Branches numerously subdivided, compressed, somewhat 

 resembling the branchlets of the cedar. Leaves minute, very acute. July. 



