ORDER 158. LYCOPODIACEJS. 



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 Jungermannia, 

 with filiform stems and lobed fronds. 



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

 reddish beneath, scarcely more than ^'' 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. 



730 



ORDER CLVIII. LYCOPODIACE^E. CLUB MOSSES. 



Plants creeping or erect, branching, rarely 

 simple, abounding in ducts, with tho leaves 

 small, numerous, crowded, entire, lanceolato 

 or subulate, 1 -nerved. Fruits sessile, axillary 

 or crowded into a spike, 2-valved, containing 

 few rather large spores, or numerous minuto 

 ones appearing like powder. 



Genera 5, species^QQ ? Like the Equisetaceae, those 

 plants appear to have been very abundant in the first 

 ages of the world, and to have attained a gigantic 

 size, although at present but a few feet in length. 

 Properties 'unimportant. Some are emetic. Tho 

 powder contained in the sporangia is highly inflam- 

 mable, and is used in the manufacture of fireworks. 



LYCOPCTDIUM, L. CLUB Moss. (Gr. 

 /tv;of , a wolf, 7roi>, a foot.) Spore cases 

 all of one kind, 1 -celled, reniform, open, 

 ing transversely, 2-valved ; spores nu- 

 merous, minute, sulphur-yellow. LVS. 78 n, Lycopodinm^iemko'idc. 7S1,A 



in 4 8 or 1C ranks. single spike. 782. A scale with its axillary 



sporange bursting. 733, Spores. 



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



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



a Spike solitary on each peduncle Nos. 3, 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 steins all alike Nos. 7, 8 



Fruit scattered, axillary, forming no distiuct spike Nos. 9, 10 



L L. clavatum L. COMMON CLUB Moss. St. creeping; branches ascending; 

 Ivs. scattered, incurved, capillaceous- acuminate 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-lanceolate 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. complanattim L. FESTOON GROUND PINE. St. trailing; branches dichot- 

 omous; Ivs. ^-ranked, unequal, the marginal ones connate, diverging at apex, tho 

 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 lOf in length. Branches numerously 

 subdivided, compressed, somewhat resembling tho brauchlets of the cedar. Lvs. 

 minute, very acute. July. 



