Okdeb 158.— LTCOPODIACB^. 



811 



killed by drought.) Fiuit 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 Jungermanuia, 

 with filiform stems and lobed fronds. 



A. Cai-oliuiSna "ffilld. 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 pi;evious editions on the au- 

 thority of Pursh, has not been observed since. 



Order CLVIII. LYCOPODIACE.^. Club Mosses. 



Plomts creeping or erect, branching, rarely 



simple, abounding in ducts, with the Uaves f^sn-ir 



small, numerous, crowded, entire, lanceolato ^J^-iiJ )"" 



or subulate, 1-nerved. Fruits sessile, axillary '^ 

 or crowded into a spike, 2-valved, containing 



few rather large spores, or numerous minute ^^Qs 



ones appearing like powder. ^ 



Genera 5, ipcciVsSOO ? Like the EqnisetaceaB, these 

 plants appear to have been very abundant in the first 

 ages of tUe ■world, and to have attained a gigantic 



size, although at present but a few feet in length. W, "^t^ 



iPropertles nnimportant. Some are emetic. The 

 powder contained in the sporangia is highly infiam- 

 inablo, and is used in tile manufacture of fireworks, 



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

 XvKog, a wolf, -nov^, a foot.) Spore cases 



all of one kind, 1-celled, reniform, open- "^ ® 730 



ing transversely, 2-valved ; spores nu- 

 merous, minute, sulphur-yellow.— Lvs. 7,50, Lycopodium dendroideum. rai.A 

 in 4 8 or 16 ranks. single spike. 782, a scale with its axillary 



' sporango bursting. 738, Spores. 



§ Fruit in pedunculated spikes (the fertile hr.anches 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 Kos. 5, 6 



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



§ Fruit scattered, axillary, forming no distinct spike . .°. Nos. 9, 10 ■ 



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

 lvs. 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, traihng 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. complanatum L. Festoon GKomo) Pine. St. trailing; branches dichot- 

 omous ; lvs. i-ranked, unequal, the marginal ones connate, diverging at apex, the 

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

 spikes. — A traihng evergreen, common in woods and shady grounds. Stein round, 

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

 subdivided, compressed, somewhat resembling the brauohlets of the cedar. Lva 

 minute, very acute. July. 



