CLUB-MOSS FAMILY 1055 



bearing gemmae.* On rocks, especially sandstone: "Newf." — "Que."— Pa. — 

 Ind. — IMinn. — Ala. — B.C. — Wash. Probably of wider range. 



3. L. inundatum L. Main stems very slender, simple or slightly forked, 

 creeping above ground, oftenest arched, leafy; aerial branches 1 or 2 to each 

 division of the main stem, erect, 1-8 cm. high, the sterile portion commonly 

 shorter or not longer than the spikes; leaves of the main stem linear-lanceolate, 

 entire or rarely a few slightly toothed, upcurved, leaves of the aerial branches 

 more slender, spreading, entire; spikes soUtary; sporophylls spreading, linear- 

 deltoid, entire or toothed just above the base. Sandy bogs: Ont. — Newf. — N J. 

 —Pa.— Ida.— Wash.— Alaska; Old World. 



4. L. alpinum L. Main stem creeping at or near the surface of the ground; 

 aerial stems ascending, 2. .5-11 cm. high, repeatedly branched; fertile branches 

 the longer, terete, with subulate leaves, sterile branches dorsiventral with 4- 

 ranked leaves, those of the upper row narrowly ovate, acute, those of the lateral 

 rows thick, asymmetrical, falcate, acute, with decurved tips, those of the under 

 row trowel-shaped; spikes sessile; sporophylls ovate, acute, erose. Woods: 

 Alaska— B.C.; Que.— Lab.— Greenl.; Old World. 



5. L. obscurum L. Main stems creeping, buried in the ground; aerial 

 branches 9-42 cm. long, the leaves of their divisions 8-ranked on the lower, 6- 

 ranked on the terminal, linear-lanceolate, spreading, upcurved, twisted, acute, 

 or mucronate; spikes sessile; sporophylls broadly ovate, papery and erose-mar- 

 gined, acuminate, with a subulate apex. Woods: "Lab." — Newf. — N.C. — Tenn. 

 — Mich.— "Sask."— Mont.— B.C.— Alaska; Asia. 



6. L. sitchense Rupr. Main stems creeping on or near the surface of the 

 groimd; aerial branches dichotomously branching, forming tufts, 2.5-25 cm. 

 high, their branches terete, the fertile the longer; leaves of the branchlets ap- 

 pressed or spreading and upcurved, linear, thick, entire, acute; spikes sessile or 

 short-stalked, the peduncles with minute bracts; sporophylls broadly ovate, 

 long-acuminate-subulate, erose. Cold woods: Lab. — Newf. — N.Y. — w Ont.; 

 Alaska — B.C. — " Ida." — Wash. 



7. L. annotinum L. Main stems creeping above ground, leafy; aerial 

 stems 2-39 cm. high, simple or 1-3 times forked; leaves spreading or reflexed, 

 upcurved at apex, lanceolate or linear-lanceolate, serrulate, tipped with a rigid 

 point; spikes 1-several; sporophylls broadly ovate-serrulate, erose. Wooded 

 places: Greenl. — W.Va. — Mich. — Alta. — Colo. — Wash. — Alaska. 



8. L. complanatum L. Main stems creeping on or slightly below the 

 surface of the ground; aerial branches yellowish green, 4—47 cm. high, irregularly 

 forked, their branches few, glaucous, flattened, mostly making annual gro\Ai;hs 

 at their tips, with minute, decmrent leaves, the lateral leaves broad, little or not 

 spreading at the tip, the upper narrow, incurved, the lower diminished, deltoid- 

 cuspidate; peduncles mostly 1-2 times forked at summit; sporophylls broadly 

 ovate, acuminate. Wooded places: Lab. — Newf. — N.Y. — Minn. — IB.C. — Mont. 

 — Ida. — Wash.; Alaska; Eu. 



9. L. clavatum L. Main stems creeping above ground, leafy ; aerial branches 

 ascending, 4-33 cm. high, simply or pinnately branched; leaves many-ranked, 

 linear, mostly bristle-tipped, entire or denticulate, on the main stems denticulate; 

 peduncles simple or forked at apex, their bracts whorled or scattered, mostly 

 bristle-tipped ; sporophylls deltoid-ovate, acuminate or bristle-tipped, with mem- 

 branous erose margins. Woods: "Lab." — N.C. — Mich. — Wis. — Ont.— Sask. — 

 Ida. — Ore. — Alaska; trop. Am. and Old World. 



Family 8. SELAGINELLACEAE. Little Clubmoss Family. 



Leafy terrestrial plants, with branching stems and 4-6-ranked leaves. 

 Sporanges solitary in the axils of the leafy bracts, some containing macro- 

 spores, others microspores, the macrospores with a hemispheric base and a 

 triangular-pyramidal apex. 



♦Closely related toL. lucidulum, which has leaves broadening and erose denticulate 

 above the middle, and is apparently not found in the Rocldes. 



