NA in general. appte»i«4. the lateral uJSli 



E:LAEVIGAXITM A. Br. fertile »ti 1 hi, v«ry leafy, i aJMge 



Sts not tuberculate, 1-5° hi, pale g, bylindrlc, ^ 3 'J^lXl 

 14-30-furrowed; ridges almost smooth; Variety 8XG&&0VXZ 1 uck e i »■ with 

 sheaths elongate, enlarged upward, A form, Imvmg fertile su, o i ■ 

 marked with a black girdle at base of more pointed, often tootti 

 the com decid w-margined teeth, and Synonym: L. ■ Caroimianum • 

 rarely also at base of sheath; ridges of ft: AXiOP3ESOw»OlBES .u. sterile 

 sheath with a central carina and some- Sts stout, densely liy _£"4. keeping; 

 times with faint short, lateral ones, branches flaccid, P. r °^ JlJrt 6-20' hi, 

 NC; O; La: Cal; Ore. fertile branches rigid erect, » 



**Sts slender, tufted, 5-10-grooved. bearing a single spike, . iys " inted 



E: VABIEQATUM Schleich. linear - awl - shaped, sp un ;j°^ le ^ oothed 



Sts ascending, 6-18' long, com simple spreading, conspiouoUbly »"stie q 

 from a branched base, 5-10-furrowed; below the middle, nervea > eta- 



sheaths g, variegated with black above, of the cylindric spike witn w < ^ . 

 teeth 5-10, tipped with a decid bristle; eeous tips. NJ to ^ la 'JK^fithus alope- 

 central air-cavity small. NH; 111; Alk; L. longipes H & G.~Piananinub 

 Greenland. curoides Beauv. fM (Lepidotis 



E: SCXSPOIDES Michx. Section BVl&GOVOmVM ^p i 



Sts filiform, very num. 3-6' hi, flexuous Beauv.). Sporangia boine in ™^ icat@d) 

 and curving, mostly 6-furrowed, with of yellowish scale -I Ke u a ^ 

 acute ridges; sheaths 3-toothed, bristle- ovate or cordate lvs wmcu i ^ 

 tips more persistent; central air-cavity tinct spike; lvs or ^^"rl u 

 0. New England; Pa; 111; north. unlike those of the spikes. near i y go. 



Order LYCOPODIACEAE Ldndley. *Sts lfy to base of spikes, or neany 

 ESILOTITM R. Br. I.— Spikes nodding. 



Lvs minute, abortive; sporangia 3- ft: CEBNUUM L. branches similar; 



celled: 4 mostly tropical species. Sts erect, branching, brancnes 



P. TRIQUETEUM Swz. lvs crowded, awl-shaped, }£™™ea, 



Sts erect 8-10' hi, triquetrous at base, in middle, spreading, groo ^ ms; 

 many-times forked at apex; ultimate bracts 8-raiiked. * la, ai* . £ urva tum 

 divisions triquetrous-winged; lvs remote, L. mananum wu iU ^. rl t p r yi= 

 awl-shaped, less than 1" long; sporangia Blume.- L. Borganum Kicnaru. 

 in spikes. Fla; SC. Synonyms: P. Flor- folium Vent. pl .„ plv sessile, 



idanum Michx.- — P. dichotomum Link.— IT.— Spikes erect closely ?eb&« 

 Bernhardia dichotoma Willd. — B. pedun- ft: ANN OTINUM L*.- ft4 ,trate creep- 

 £ u i^J^l s ^ L y c °P° dlum nudum L - • StS , OT^^^oendinK ' branches sim- 



ftYCOFODlUM L. ing, 1-4° long; ^scendin^ ^--^ 



Lvs well developed, in 4-many ranks; ilar, 5-8' hi, sparingly lorK _ea , linear ^ an . 



sporangia 1-eelled. Near 100 species. spreading, 6 : r ^ nKe c t i , r r 11 iate' nerved be- 



Section PLANANTHUS Beauv. Sp.-r- ceolate. minutely se^uiate, n 



angia borne in axils of lvs which are low; spike oblong, cylmdric, 



mgia borne m axils of lvs which are low; spute "» lu "f,' a lk- Greenland. 



:imilar to those of sterile and fertile sts. England; NJ ; r^ T ^ r ;foiiuni Lam.— L. 



* Sporangia com 0 in axils of upper lvs; Synonyms: L vjunipei ^ annotina 



lvs dark g. shining, about S-ranked. bryophyilum Presl.— Lcpiaous. 



ft: SELAGO L. Beauv. na^/ 



Sts 3-6' hi, thick, rigid, erect, 2-3- Variety PJK GENS iJesv d e 



times forked, forming a level-topped A mt form L reclin- 



cluster; lvs elongate-lanceolate, mu- rigid, pointed lvs. &ynoii.v . 



cronulate, entire or spinulose-denticulate, atum Michx. , 



nerved above, convex below. NC; Mich; ft: OB.3CURUM lj. , us f r om a 

 New England; Alk; Greenland. Syn- ■ Ground-pine. rtstocfc 'densely 

 nnyras: L. recurvum Kit. — L. suberectum subterranean creep > branCheg 

 Lowe.— Plananthus selago Beauv. branched above, tne crow ue lan ^ 

 ft: LTJCIDUI.UM Michx. spreading fan-like, lvs * J. ^ 4 _ 1Q 

 Sts ascending, thick, 2-3-times forked, ceolate-lmear ^ ™„ e ""nv-rowed. Can- 

 branches 6-12' hi; lvs widely spreading on each plant, bracts mai y lepidotis 

 or reflexed, flat, one-nerved, acute, ada; NC; Ind ^^^_7vSodium den- 

 minutely toothed. NC, northward. Syn- dendroidea BeauV iWn?Sm 

 onvms: L. refiexum Swz. — L. serratum droideum et var. odscuiui . 

 Des v.— Plananthus reflexus Beauv. ft: ALPImB u ith ascen d 

 •♦Sporangia only in axils of upper lvs . Sts elongate cietg n ^ hes; lvB < 

 which form spikes; lvs many-ranked. ind densely clusteiea ui* 



which form spikes; lvs many-ranked. ind densely CiU =Af\ 7, flt6d a dnate-decur- 

 L: INUNDATUM L. . ranked erect -^VhTse of lateral rows 

 Sterile sts creeping flaccid,, forking; rent, of 2 forms, " carinate, con- 

 fertile sts erect, simple, 1-4' hi, bearing lanceolate falcate, intermediate rows 



a short, thick spike ;lvs lanceolate or cave witiim, Smaller lance-awl- 



lance-awl-shaped, acute, entire, soft, scarcely 1-thira bii lower r0WS not 



spreading or curved upward on prostrate shaped, tne upyei Rocky Mts; 



sts New England; Mich; southward, different Lake bupenoi , 



Synonyms: L.palustre Lam.— Plananthus Wash; Alk^ sho rt-peduncled. 



inundatus Beauv. XI1 -^.iiM^«T*TT-iur\xrni^ 



Variety P INN ATUM Chapm. ft: SABINAEPpftlUM Willd 



Sts pinnately branched; lvs bristly- Ground-fir sts elongate, creeping, com 



fringed below middle, unequal, the underground; branches erect short dich 



upper and lower shorter and somewhat otomous, clustered; lvs 4-rowed, sman, 



