CLUB-MOSS FAMILY 1055 



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

 Ind. — ^linn. — Ala. — B.C. — Wash. Probably of wider range. 



3. L. inundatum L. ^Nlain stems verj' slender, simple or slightly forked, 

 creeping above groimd, 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 hnear-lanceolate, 

 entire or rarely a few slightly toothed, upcur^^ed, leaves of the aerial branches 

 more slender, spreading, entire; spikes soUtarj'; sporophylls spreading, linear- 

 deltoid, entire or toothed jvist 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, tho.se of the upper row narrowh- ovate, acute, those of the lateral 

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

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

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



5. L. obscurum L. ]\Iain 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, hnear-lanceolate, spreading, upcurved, twisted, acute, 

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

 gined, acmninate, with a subulate apex. Woods: "Lab." — Xewf. — N.C. — Term. 

 — Mich.— ''Sask."— Mont.— B.C.— .-Uaska; Asia. 



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

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

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

 pressed or spreading and upcur\-ed, linear, thick, entire, acute; spikes seissUe or 

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

 long-acuminate-subulate, erose. Cold woods: Lab. — Xewf. — 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, 

 upcurv^ed at apex, lanceolate or hnear-lanceolate, serrulate, tipped with a rigid 

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

 places: Greenl. — W."\'a. — Alich.— Alta. — Colo. — Wash. — Alaska. 



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

 surface of the ground; aerial branches yello^\"ish green, 4-4:7 cm. high, irregularly 

 forked, their branches few, glaucous, flattened, mostly making annual gro'n'ths 

 at their tips, with minute, decurrent leaves, the lateral leaves broad, httle or not 

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

 cuspidate; peduncles mostly 1-2 times forked at simimit; sporophylls broadh^ 

 ovate, acuminate. Wooded places: Lab. — Ne'n'f. — N.Y. — IMinn. — B.C. — ]Mont. 

 — Ida.— Wash.; Alaska; Eu. 



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

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

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

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

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

 branous erose margins. Woods: "Lab." — N.C. — Mich. — Wis.— -Ont.^^ask. — 

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



F.^iLY 8. SELAGINELLACEAE. Little Clubmoss Family. 



Leafy terrestrial plant.?, ■R'itli branching .stems and 4-6-rarLked leaves. 

 Sporanges solitar}^ in the axils of the leafy bracts, some containing macro- 

 spores, others microspores, the macrospores vnth a hemispheric ba.se and a 

 triangular-p3Tamidal apex. 



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

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



