54 



LYCOPODIACEAB (CLUB MOSS FAMILY) 



Md. to Mich., southwestw. and westw. ; rare east of the Miss. R. (Mex., Asia ) 

 FIGS. 20, 21. 



9. E. variegatum Schleich. Stems tufted, ascending, 1.5 to 3 dm. high, 

 slender, 5-10-grooved ; ridges with broad central grooves ; centrum i the 



19. E. hyemale, v. intermedium. 

 Cross-section of stem x 12. 



20. E. hyemale, v. robus- 

 tum. Epidermis x 12. 



21. E. hyemale, v. robustum. 

 Cross-section of stem x 12. 



total diameter ; green parenchyma continuous under the keels, interrupted in the 

 grooves ; sheaths loose, green below, black-girdled above ; leaves 4-carinate ; 

 teeth black, with broad hyaline white borders, persistent, with long filiform 

 deciduous tips. Lab. to Alaska, south w. to Me., N. Y., and Wyo. ; rare. 

 (Eurasia.) 



Var. Jesupi A. A. Eaton. Stems ascending or erect, 2-4 dm. high, 10-12- 

 furrowed ; ridges with slight central grooves ; centrum ^-f the total diameter ; 

 carinal bast cutting the parenchyma, the vallecular small ; sheaths green, with 

 black limbs, becoming ashy with black bases ; teeth brown-centered, white-bor- 

 dered, with flexuous persistent awn-points, often becoming papery and withering. 

 Que. and Ont., southw. to Ct. and 111. 



Var. Nelsbni A. A. Eaton. Stems annual, tufted, slender, 1.5-4 dm. high; 

 angles rounded ; sheaths ampliated, green, with narrow black limb, becoming 

 dusky; teeth centrally grooved, with dark centers and broad 

 white borders, bearing deciduous awn-points; centrum i the 

 total diameter of stem ; bast similar to the type. N. Y. to Mich. 

 and 111. 



10. E. scirpoides Michx. Stems many in a tuft, filiform, 0.75 

 to L5 dm - hi g h * flexuous and curving, solid at the center, 6-ridged 

 through the deep grooving of the 3 angles ; sheaths with 3 per- 

 sistent hyaline-bordered filiform-tipped teeth. Moist evergreen 

 woods and low fields ; Lab. to Pa., 111., and northwestw. (Eurasia.) FIG. 22. 



Cross^secttonof 

 stem x 12 



LYCOPODIACEAE (CLUB Moss FAMILY) 



Low plants, usually of moss-like aspect, with elongated and often much 

 branched stems covered with small lanceolate or subulate, rarely oblong or 

 rounded, persistent entire leaves ; the sporangia 1-S-celled, solitary in the axils 

 of the leaves, or on their upper surface, lohen ripe opening into two or three 

 valves, and shedding the numerous yellow spores, which are all of one kind. 

 The Family, as here defined, consists mainly of the large genus 



1. LYCOPdDIUM L. CLUB Moss 



Spore-cases coriaceous, flattened, usually kidney-shaped, 1-celled, 2-valved, 

 mostly by a transverse line round the margin, discharging the subtile spores, in 

 the form of a copious sulphur-colored inflammable powder. Perennials, with 

 evergreen one-nerved leaves imbricated or crowded in 4-1(5 ranks. (Name 

 compounded of Xtf/cos, a too?/, and TTOI/S, foot, from a fancied resemblance.) 



