Okdee 158.— LTCOPODIACB^. 



811 



killed by drought.) Fruit sessile on the under side of the branches, of 

 2 kinds ; the sterile smaller, opening all around, containing a thick 

 body bearing 3 angular lobes (antheridia) above ; the fertile a thin 

 pericarp bursting irregularly, containing many globular, stalked sporangia 

 each with a few spores. — Minute, floating, resembling a Jungermaunia. 

 with filiform stems and lobed fronds. 



A. CaroliniEtna Willd. Lvs. ovate-oblong, obtuse, imbricated, fleshy, floating, 

 reddish beneath, scarcely more than J'' in length ; sterile fruits in pairs or .soli- 

 tary, at the base of the fertile, many times smaller than it. — Lakes and marshes 

 N. Y. to 111. and S. States. 



4. SALVIN'IA natans L, inserted in previous editions on the au- 

 thority of Pursh, has not been observed since. 



Order CLVHI. LYCOPODIACEiE. Club Mosses. 



Plants creeping or erect, branching, rarely J\^ 



simple, abounding in ducts, with thff kaves rfSM^. t 



small, numerous, crowded, entire, lanceolate (»*f-'!'i;il r~ll\M .tt ' 



or subulate, 1-nerved. Pruits sessile, axillary ^^w^ ^ 



or crowded into a spike, 2-valved, containing r-^jr>N ^ J|vf wiSWliS 

 few rather large spores, or numerous minute *^C>) ' ' ' ■ ' 



ones appearing like powder. ' 



Genera 5, apeciesl^ 1 Like the Eqnisetaceas, these 

 plants .appear to have been very abundant in the first 



ages of the world, and to have attained a gigantic W '^'^^(SStfi 



Bize, although at present but a few feet in length. ml '^K^i^Botj.'S 



Properties unimportant. Some are emetic. The 

 powder contained in the sporangia is highly inflam- 

 mable, and is used in the manufacture of fireworks. 



LYCOPO^DlUffl, L. Club Moss. (Gr. 

 Xvicog, a wolf, TTovg, a foot.) Spore cases 



all of one kind, 1-celled, reniform, open. "w ^ tm 



ing transversely, 2-valved ; spores nu- 

 merous, minute, sulphur-yellow.— Lvs. 730, Lycopodium dendroidoum. Tm,.\ 



in 4 8 or 16 ranks, single spike. 732, a scale with its axillary 



* ' sporango bursting. 783, Spores. 



§ Fruit in pedunculated spikes (the fertile branches nearly leafless), (a) 



a Spikes several (2 to 6) on each peduucle Nos. 1, 3 



a Spike solitary on each peduncle Nos. S, 4 



§ Fruit in sessile spikes (the branches leafy throughout), (b) 



b Leaves of the spike bract-like, discolored Nos. 5, 6 



b Leaves of the spikes and stems all alike Nos. 7, 8 



g Fruit scattered, axillary, forming no distinct spike Nos. 9, 10 



1 Ii. clavatum L. Common Club Moss. St. creeping; branches ascending; 

 lvs. scattered, incurved, capiUaceous-acuminaie ; spikes in pairs, rarely in 3s, cylin- 

 drical, 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-lauoeolate leaves 

 which are entire or serrulate, and end in a pellucid, curved bristle. Spikes per- 

 fectly straight, parallel, erect, and upon an erect peduncle. July. 



2 L. complanatum L. Festoon Ground Pine. St. trailing; branches dichot- 

 omous ; lvs. 4rranked, unequal, the marginal ones connate, diverging at apex, the 

 superficial ones solitary, appressed; ped. elongated, supporting 4 — 6 cyliridric 

 spikes. — A trailing evergreen, common in woods and shady grounds. Stem round, 

 creeping among the moss and leaves, often lOf in length. Branches numerously 

 subdivided, eompressed, somewhat resembling the brauchlets of the cedar, hva 

 minute, very acute. July. 



