604 LTCOPODIACEJE. (CLUB-MOSS FAMILY.) 



i- - Spikeo pedanded: viz. the leaves minute on the fertile branches. 



-* Leaves homogeneous and equal, many-ranked: stems terete. 



+ 7. JL. ckivatllill, L. (CoMMOx CLUB-MOSS.) Stems creeping exten- 

 sively, with similar ascending short and very leafy branches ; the fertile termi- 

 nated by a slender peduncle (4' -6' long), bearing about 2-3 (rarely 1 or 4) 

 linear-cylindrical spikes ; leaves linear-awl-shaped, incurved-spreading (light 

 green), tipped, as also the bracts, with a fine bristle. Dry woods ; common 

 northward. July. (Eu.) 



** *-* Leaves of two forma, few-ranked: stems or branches flattened. 



8. JL. Carolilliiilllim, L. Sterile stems and their few short l>r:uiches 



entirely creeping (leafless and I'ooting on the under side), thickly clothed with 

 broadly lanceolate acute and somewhat oblique 1 -nerved lat<ml lams widely 

 spreading in 2 ranks, and a shorter intermediate row appressed on the upper 

 side; also sending up a slender simple peduncle (2' -4' high, clothed merely 

 with small bract-like and appressed awl-shaped leaves), bearing a single cylindri- 

 cal spike. Wet pine barrens, New Jersey to Virginia, and southward. July. 



9. JL. COmphniatiiBii, L Stems extensively creeping (often subter- 

 ranean), the erect or ascending branches several times forked above; bushy branch- 

 lets crowded, flattened, all clothed with minute imbricated-appressed aid-shaped lares 

 in 4 ranks, with dccurrent-united bases, the lateral rows with somewhat spread- 

 ing tooth-like tips, those of the upper and under rows smaller, narrower, wholly 

 appressed; peduncle slender, bearing 2-4 cylindrical spikes Woods and 

 thickets ; common : the typical form with spreading fan-like branches abundant 

 eouthward ; while northward, especially far northward, it passes gradually into 

 var. SABix^EF6Liusi (L. sabinajfolium, Willd., L. Chamaecyparissus, Braun), 

 with more erect and fascicled branches. (Eu.) 



2. SELAOINELLA, Beauv., Spring. ( Tab. 14.) 



Fructification of two kinds, namely, of spore-cases like those of Lycopodium, 

 but very minute and oblong or globular, containing reddish or orange-colored 

 powdery spores; and of 3-4-valved tumid oophoridia, filled by 3 or 4 (rarely 1- 

 6) ranch larger globose-angular spores; the latter either intermixed with tho 

 former in the same axils, or solitary (and larger) in the lower axils of the leafy 

 4-ranked sessile spike. (Name a diminutive of Selago, an ancient name of a 

 Lycopodium, from which this gcnns is separated.) 



* Leaves all alike, equally imbricated ; those of the spike similar. 



1. S. SClagiilOlcleS* Sterile stems prostrate or creeping, small and slen- 

 der; the fertile thick* r, (i*<-c>tding, sini/de (l'-3' high); leaves lanceolate, acute, 

 sprt (tiling, s/xirsil// spi>iiilost--<-iliatc. (S. spinosa, ttmnv. S. spinulosa, Braun.) 

 Wet places, New Hampshire (Pnrsh) and Michigan, Lake Superior and 

 northward; pretty rare. Leaves larger on the fertile stems, thin, 



green. (Eu.) 



2. S. rilpf'StriS Spring. Much branded in close //h (l'-3' high) ; 

 densely (ip/nrxxid-intbr/i-ntrd, linear-lanceolate, convex and with a grooved keel, 



int,, bris/l, -lipped; those of the strongly 4-angular spike rather broad- 



