LYCOPODIACEJE. 



456 LYCOFODIUM. 



1. LYCOPO'DIUM. 

 ThecfE axillary, sessile, 1-celled, some of them 2-valved, 

 filled with minute, farinaceous grains, others Svalved, con- 

 taining several larger globular s[)ores. 



* Inflorescence in pedunculate spikes. 



1. L. clava'tum. L. Common Club Rush. L. tristachium. Kutt. 

 Stem creeping ; branches ascendinop ; Uaccs scattered, incurved, capillaceous- 



acuminate; spikes in pairs, rarely in 3s, cylindrical, pedunculate ; bracts oT 

 the spike ovate, acuminate, erosely dt-nticulate. A well known evergreen, 

 trailing upon the ground in shady pastures and woods. Stem and branches 

 clothed with numerous, linear-lanceolate leaves which are entire or serrulate, 

 and end in a pellucid, curved bristle.j Spikes perfectly straight, parallel, 

 erect, and upon an erect peduncle. July. 



2. L. compi.ana'tum. Ground Pine. 



Stem trailing; branches dichotomous; /caijes 4-ranked, unequal, the margi- 

 nal ones connate, diverging at apex, the superficial ones solitary, appressed; 

 peduncles elongated, supportmg 4—15, cylindric spikes. A trailing evergreen, 

 common in woods and shady grounds. Stem round, creeping among the 

 moss and leaves, often 10 feet in length. Branches numeiously subdivided, 

 compressed, somewhat resembling the branchlets of the cedar. Leaves 

 minute, very acute. July. 



3. L. Carolinia'num. 



S^em creeping ; /eares somewhat 2-ranked, spreading, lanceolate, entire; 

 peduncle erect, ^solitary, elongated, bearing a single spike ; in/cis sublanceolale, 

 entire. In muddy grounds. Both the stem and its branches are prostrate 

 with erect, slender peduncles 3—4 inches high. July. 



4. L. sabin.^fo'lium. Willd. L. alpinum. Mx. 

 Stem elonirated, creeping; ir«nc7tes erect, short, dichotomous, with fastigiate 



divisions; Icaiws imbricated on all sides, erect, terete-subulate, aristate-acumi- 

 nate; spikes peduncled by the attenuated and slightly leafy summits of the 

 branches, cylindric, solitary, with cordate, acuminate bracts. White Mts.; 

 extensively" creepino; among the rocks, with eiect, numerously divided 

 branches, a few of the divisions terminating in spikes an inch in length. Jl. 

 * * Spikes sessile, t Leaves surrounding the stem. 



5. L. dendroi'decm. Tree Club Moss. 



Stem erect ; branches alternate, crowded, dichotomous, erect; leaves linear- 

 lanceolate, in G equal rows, spreading ; spikes numerous, solitary. An elegant 

 little plant, common in vvoods, readily distinguished oy its upright, tree-like 

 form. Plant about 8 inches high, with branches more or less diverging. 

 These arc subdivided into numerous, forked branchlets. radiant, so as together 

 to represent a spiral arrangement. Spikes 1 — 1, an inch long. July. 



p. obscurum {Turr. L. obscurum. L.) ; branches spreading; ipike mostly 

 solitary. 



6. L. rupe'stre. Rock Club Moss. 



Stem creeping; branches nscomVing, subdivided ; leaves scattered, imbricate, 

 linear-lanceolat'e,capillaceous-acuminate,ciliate ; spike solitary, ( uadiangular. 

 A very small species, creeping on rocks, &c. Stem a few incl es in length, 

 with numerous' branches which are i— 1 inch long, clothed with grayish 

 green leaves. Spike i inch long, 4-rovved, seeming a mere continuation of 

 the branch. July. 



7. L. ai.opecuroi'des. Fox-tail Club Moss. 



Stem creeping, subramose ; branches simple, long, ascending, bearing a 

 sino-le sessile spike at top ; leaves linear-subulate, ciliate-denlate at base, 

 spreading; spike lenCy. Swamps. Stem extensively creeping. Branches 



