56 LYCOrODIACEAE (CLUB MOSS FAMILY) 



part.) — Pine-barrens and sandy swamps, Nantucket (3Irs. Owen, Dame, 

 Flot/d), L. L, and southw. Am'Z-, Sept. —Stems, including tlie dense leav.-s, lo 

 mm. inthiclvuess ; the comose splice, wiLh its longer spreading leaves, 18-22 mm. 

 thick. (S. A.) 



4. L. inundatum L. Dwarf; creeping sterile stems forking, flaccid, 3-10 

 (rarely 15) cm. high, bearing a short thick spike ; sporophylls usually tootlied 

 near the ovate base, their attenuate tips herbaceous, loosely spreading ; leaves 

 lanceolate or lance-awl-shaped, acute, soft, spreading, mostly entire, those 

 of the prostrate stems curving upward. — Sandy shores and in sphagnum, Nfd. 

 to N. J., and north westw. to Alaska. (Eurasia.) Var. Bigelovii Tuckerni. 

 Taller (the fertile branches 1-3 dm. high) ; sporophylls more incurved or 

 appressed, commonly somewhat stramineous, mostly entire. (L. adpressum 

 Lioyd & Underw. in part.) — Sandy shores, e. Mass. to Md. 



5. L. ann6tinum L. Much branched ; stems prostrate and creeping (3-12 

 dm. long); the ascending branches similar (1-2.5 dm. high), sparingly forkv-d 

 sterile ones making yearly growths from the summit ; leaves equal, spreading, 

 in about 5 ranks, rigid, lanceolate, pointed, minutely serrulate (pale green); 

 spike solitary, thickish-cylindrical. — Open woods, Nfd. to Ct., Minn., Col., 

 Alaska, and Greenl. (Eurasia.) In exposed and alpine situations replaced by 

 var. puNGENS Desv., a form with short thick more rigid leaves which are 

 3-4 mm. long and erectish. — Nfd. to n. N. Y., and northwestw. (Eurasia.) 



6. L. clavatum L. (Common C.) Stems creeping extensively, with similar 

 ascending short and very leafy branches ; the fertile terminated by a slender 

 peduncle (1-1.5 dm. long), bearing about 2-4 slender cylindrical spikes ; leaves 

 linear-awl-shaped, incurved-spreading (light green), tipped, as also the bracts, 

 with a fine bristle. — Dry woods ; common especially north w. July. (Cosmop. ) 

 Var. monostXchyox Grev. & Hook. Spike solitary on each peduncle com- 

 monly of larger size (sometimes 8 cm. long). — E. Que. to Ct. and northwestw. 

 Var. brevispic\tdm Peck. Spikes solitary or in pairs, very short (1.3-2 4 

 cm. long), thickish, blunt; peduncles 3-5 cm. long. — Wallface Mt., N. Y. 

 (Peck). A sterile form with greatly elongated peduncles is sometimes found : 

 Taconic Mts., w. Mass. (Harrison), and Green Mts., Vt. (Kent). 



7. L. obscurum L. Rootstock cord-like, subterranean, bearing scattered 

 erect tree-like stems dividing at the summit into several densely dichotomous 

 spreading branches ; leaves linear-lanceolate, decurrent, entire, acute, 6-ranked, 

 those of the two upper and two lower ranks smaller and appressed, the lateral ones 

 incurved-spreading ; spikes 1-3, erect, essentially sessile ; bracts scarious-niar- 

 gined, broadly ovate, abruptly apiculate. — Rich woods, N. E. to Va. — Passing 

 imperceptibly into 



Var. dendroidsum (Michx.) D. C. P'.aton. Leaves equal, erect or incurved; 

 branches scarci^ly or not at all dorsiventral, usnnlly erect and crowded; spikes 

 1-15. (L. dendroideum Michx. ) — The more common form, in woods or on open 

 hillsides, Nfd. to N. C. and L. Superior. 



8. L. sitchense Kapr. Glaucous ; rootstock long, nearly superficial ; steins 

 short, numerous, er 'ct, divided from near the base into numerous erect sub- 

 .simple crowded branches (3-7 cu. high), equally leafy all round ; leaves equal, 

 few-ranked, ascendmg, about 2 mm. long, slender, very acute ; spikes on siiort 

 but usually distinct scaly peduncl -s ; sporophylls green v.-ith scarious erose 

 margin, the tip spreading. — Coniferous woods, e. Que. and n. Me.; Mt. Katah- 

 din; Mt. Washington, N. H. (Eggleston) ; Adirondack Mts., N. Y. (Feck); 

 n. shore of L. Superior ; Alaska. 



9. L. sabinaefblium Willd. In habit similar to the preceding ; branches 

 5-10 cm. long, flexuous, dorsiventral ; the leaves on the lower surface smaller; 

 peduncles 2-3 cm. long. — Dry woods, e. Que. to Vt. ; Staten Isl., N. Y. (Buch- 

 heister) ; and L. Superior {G. S. Miller). 



10. L. carolinianum L. Sterile stems and their few short branches entirely 

 creeping (leafless and rooting on the under side), thickly clothed with broadly 

 lanceolate acute and somewhat oblique 1-nerved lateral leaves videly spreading 

 in 2 ranks, and a shorter intermediate row appressed on the upper side ; also 

 sending up a slender simple peduncle (7-21 cm. long, clothed merely with 



