View source for Lycopodium obscurum

{{Treatment/ID
|accepted_name=Lycopodium obscurum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 1102. 1753
|year=1753
}}
|common_names=Flat-branched tree club-moss;lycopode obscur
|basionyms=
|synonyms=
|hierarchy=Lycopodiaceae;Lycopodium;Lycopodium obscurum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Lycopodiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Lycopodium]]</div><div class="higher-taxon"><small>species</small>[[Lycopodium obscurum]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem orientation;stem location"><b>Horizontal </b>stems subterranean.</span> <span class="statement" id="st-d0_s1" data-properties="shoot orientation;shoot growth form;shoot count;shoot architecture;branchlet count;branchlet variability"><b>Upright </b>shoots treelike, many branched, branchlets numerous and strongly differentiated;</span> <span class="statement" id="st-d0_s2" data-properties="bud constriction duration;bud constriction count">annual bud constrictions absent;</span> <span class="statement" id="st-d0_s3" data-properties="leaf architecture or shape;leaf length;leaf width;leaf pubescence or texture;branchlet position;branchlet fixation or orientation">leaves on main-stem below lateral branchlets tightly appressed, needlelike, 3.5–4.5 X 0.6–0.7 mm, soft.</span> <span class="statement" id="st-d0_s4" data-properties="lateral branchlet prominence or shape;lateral branchlet diameter"><b>Lateral </b>branchlets flat in cross-section, 6–9 mm diam.;</span> <span class="statement" id="st-d0_s5" data-properties="bud constriction duration;bud constriction prominence">annual bud constrictions inconspicuous.</span> <span class="statement" id="st-d0_s6" data-properties="leaf position;leaf orientation;leaf length;leaf width;leaf count;leaf size;leaf orientation;rank count;rank count;upperside count"><b>Leaves </b>in 6 ranks, 1 on upperside, 4 lateral, ascending-spreading, 2.5–5.5 X 0.5–1.2 mm, and 1 on underside, much smaller than others, ascending;</span> <span class="statement" id="st-d0_s7" data-properties="margin architecture or shape">margins entire;</span> <span class="statement" id="st-d0_s8" data-properties="hair tip count">apex lacking hair tip.</span> <span class="statement" id="st-d0_s9" data-properties="strobilus count;strobilus architecture;strobilus some measurement"><b>Strobili </b>1–6 at tip of shoot, sessile, 12–60 mm.</span> <span class="statement" id="st-d0_s10" data-properties="sporophyll length;sporophyll width"><b>Sporophylls </b>3 X 2 mm, apex long, gradually narrowing.</span> <span class="statement" id="st-d0_s11" data-properties="apex length or size;apex width;2n chromosome count">2n = 68.</span><!--

-->{{Treatment/Body
|habitat=Rich hardwood forests and successional shrubby areas
|elevation=0–1600 m
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Conn.;Del.;Ga.;Ky.;Maine;Md.;Mass.;Mich.;Ohio;Pa.;N.H.;N.J.;N.Y.;N.C.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis.
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Lycopodium obscurum
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Lycopodiaceae
|habitat=Rich hardwood forests and successional shrubby areas
|elevation=0–1600 m
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Conn.;Del.;Ga.;Ky.;Maine;Md.;Mass.;Mich.;Ohio;Pa.;N.H.;N.J.;N.Y.;N.C.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_526.xml
|genus=Lycopodium
|species=Lycopodium obscurum
|2n chromosome count=68
|apex length or size=long
|apex width=narrowing
|branchlet count=numerous
|branchlet fixation or orientation=appressed
|branchlet position=lateral
|branchlet variability=differentiated
|bud constriction count=absent
|bud constriction duration=annual;annual
|bud constriction prominence=inconspicuous
|hair tip count=lacking
|lateral branchlet diameter=6mm;9mm
|lateral branchlet prominence or shape=flat
|leaf architecture or shape=needlelike
|leaf count=1
|leaf length=2.5mm;5.5mm
|leaf orientation=ascending;ascending-spreading
|leaf position=lateral
|leaf pubescence or texture=soft
|leaf size=much smaller
|leaf width=0.5mm;1.2mm
|margin architecture or shape=entire
|rank count=1;6
|shoot architecture=branched
|shoot count=many
|shoot growth form=treelike
|shoot orientation=upright
|sporophyll length=3
|sporophyll width=2
|stem location=subterranean
|stem orientation=horizontal
|strobilus architecture=sessile
|strobilus count=1;6
|strobilus some measurement=12mm;60mm
|upperside count=4
}}<!--

-->[[Category:Treatment]][[Category:Lycopodium]]