Ordee 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 (antberidia) 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. Carolinians "Willd. Lvs. ovate-oblong, obtuse, imbricated, fleshy, floating, 

 reddish beneath, scarcely more than J 1 ' in length ; sterile fruits in pairs or soli- 

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

 N. ¥. to I1L and S. States. 



4. SALVIFTIA natans L, inserted in previous editions on the au- 

 thority of Pursh, has not been observed since. 



Order CLVIIL LYCOPODIACE^E. Club Mosses. 



Plants creeping or erect, branching, rarely J\? 



simple, abounding in ducts, with the leaves gtty i 



small, numerous, crowded, entire, lanceolate h,^y^W '"" 



or subulate, 1 -nerved. Fruits sessile, axillary nP|$P^ 



or crowded into a spike, 2-valved, containing .-.'esp. , 



few rather large spores, or numerous minute ^'p\ Writ $. 



•ones appearing like powder. 3 



Genera 5, species 200 ? Like the Equisetaccse, these 

 plants appear to have been very abiuidant in the first 



ages of the world, and to have attained a gigantie jfW 'WS 



size, although at present but a few feet in length. Mj **v^ 



Properties unimportant. Some are emetic. The 

 powder contained in the sporangia is highly inflam- 

 mable, and is used in the manufacture of fireworks. 



LYC0P0DIUM, L. Club Moss. (Gr. 

 XvKog, a wolf, novg, a foot) Spore cases 

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

 ing transversely, 2-valved", spores nu- 

 merous, minute, sulphur-yellow.— Lvs. rt0jIiJ 



in 4, 8 or 1G ranks. single spike. 732, A scale with its axillary 



«poraage bursting. 78-9, Spores. 



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



a Spikes several <'2 to 6) on each peduncle. ..Nos. t, 2 



a Spike sojitary on each peduncle. Nos. 3, 4 



| Fruit iu sessile spikes (the branches leafy throughout), (b) 



b Leav-esof tlic spike, bract-like, discolored Nos. 5, 6 



b Leaves of the spikes and steins all alike,. Nos. i\ 8 



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



1 I». clavatum L. Common €lub Moss. St. creeping; branches ascending; 

 lvs. scattered, incurved, capUlaceous-acuminate ; epikes 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-lanoeolate leaves 

 whieh 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. A-ranked, unequal, the marginal ones connate, diverging at apex, the 

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

 .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 the brauchlets of the cedar. Lvs. 

 minute, very acute. July. 



