BoTRYCHiuM. FILICES. 507 



Moist fertile woods and low grounds. Fr. July - September. The B. dissectum of authors 

 is surely but a variety of B. fumarioides. The two plants grow together, and intermediate 

 forms occur. 



3. BoTRYCHiuM SIMPLEX, Hltchcock. Dwurf Moouwort. 



Frond from the lower part of the scape, oblong, irregularly 3 - 4-lobed or pinnatifid, with 

 the segments roundish, obovate, cuneate, and entire or somewhat incised ; spike pinnate. — 

 Hitchcock, in Sill. jour. G. p. 103 ; Torr. compend. p. 386 ; Hook. <^ Grev. ic. Fil. t. 82, 

 and Jl. Bar. -Am. 2. ;;. 265; Beck, hot. p. 458. 



A small fern, rarely more than 4 — 5 inches high, and soiiietimes scarcely more than a 

 single inch. Frond variable : in the smallest specimens, oblong or obovate, with 3-4 large 

 teeth or lobes ; in the larger specimens, regularly pinnatifid, with 5-7 segments, which are 

 roundish-obovate and sometimes cut or toothed. 



Dry fertile woods ; Highlands of the Hudson {Dr. Barratt) ; Rensselaer county {Dr. 

 Wass). Fr. June. 



Order CXXVIII. LYCOPODIACEyE. DC. The Club-moss Tribe. 



Fructification axillary or spiked, usually consisting of capsules or antheridia, 

 which are 1 - 3-celled, and filled with minute spores or granules; some- 

 times, also, of other capsules ( oophoridia, Spring ) , which contain larger 

 grains. — Stems herbaceous or sometimes woody, simple or branched, usually 

 creeping or prostrate. Leaves small, undivided, often in several rows and 

 imbricated. 



1. LYCOPODIUM. Linn. ; Spring, in nouv. mem. de VAcad. roy. Brux. 1842. 



CLUB-MOSS. 



[From the Greek, lykos, a wolf, and pous, poilos, a foot ; from a supposed resemblance.] 



Capsules all of one kind (antheridia), one-celled, reniform, somewhat didymous (son)etimes 



transversely ovoid), opening transversely at the apex or rarely at the base. — Leaves in 



8-16 (rarely 4) rows. Fructilicalion axillary or in terminal bracteate spikes. Spores 



pale yellow, highly inflammable. 



64* 



