12 



1 — 3 pinnate, bearing a double row of globular, 2-valved, sessile 

 sporangia ; sterile portion ternate, pinnately divided ; veins free. 



B. viEGiNiANUM SwARTZ, Plant 1 — 2 feet high or frequent- 

 ly only a few inches ; sterile segment sessile above the middle of 

 the plant, ternate, broadly triangular, membranaceous, primary 

 divisions short stalked, 1 — 2 pinnate, oblong, toothed toward 

 the apex ; veins simple braches from a midvein ; fertile segment 

 recurved, much contracted, 2 — 3 pinnate. Frequent in rich 

 woods in most parts of the state. June — July. 



B. TERNATUM SwARTZ. Low, 4 — 16 inches high, fleshy; 

 sterile segment long stalked from near the base of the pUnt, 

 ternate, triangular, divisions short stalked, pinnately decom- 

 pound, final segments varying from round-reniform to triangu- 

 lar-lanceolate, entire or toothed ; fertile segment long stalked, 

 2—4 pinnate. Fayette county. Woods. Only one specimen 

 so far has been found. B. Fink. 



Order 4. LYCOPODI ACEiE LINDL. 



Club Moss Family. 



Low, moss-like, terrestrial plants, stems often much branched 

 and covered with lanceolate or subulate, rarely oblong or round- 

 ed, persistent entire leaves, arranged in two to many ranks ; 

 sporangia 1 — 3 celled, axillary or on the upper surface of the 

 leaves, on reaching maturity breaking into 2—3 valves and shed- 

 ding copious yellow spores. 



LYCOPODIUM L. Club-Moss. 



Perennial, terrestrial plants with evergreen, one nerved, im- 

 bricated, bract-like leaves; sporangia coriaceous, flattened, reni- 

 form, one-celled, ' 



* Spore-cases only in the axils of the upper hract-like leaves^ 

 gimng a spike like appearance^ the fruiting hvacts yellowish^ 

 ovate to heart shaped, 



L. CLAVATUM L, (Common Club-Moss). Stems widely 

 creeping, terete, branches, similar, short, leafy, erect ; the fer- 

 tile branches with minute leaves giving the 1—3 linear spikes 

 terminating the branches the appearance of being pedicelled; 



