CLUB-MOSS FAMILY 1055 



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



Ind. Minn. 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 solitary; 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, witlTdecurved tips, those of the under 

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

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



6. 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 

 ground; 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 growths 

 at their tips, with minute, decurrent 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. B.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 Rockies. 



