Difference between revisions of "Lycopodium obscurum"

Linnaeus

Sp. Pl. 2: 1102. 1753.

Common names: Flat-branched tree club-moss lycopode obscur
IllustratedEndemic
Treatment appears in FNA Volume 2.
FNA>Volume Importer
 
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|common_names=Flat-branched tree club-moss;lycopode obscur
 
|common_names=Flat-branched tree club-moss;lycopode obscur
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|special_status={{Treatment/ID/Special_status
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|code=F
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|label=Illustrated
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}}{{Treatment/ID/Special_status
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|code=E
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|label=Endemic
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|basionyms=
 
|basionyms=
 
|synonyms=
 
|synonyms=
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--><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><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Horizontal </b>stems subterranean. <b>Upright</b> shoots treelike, many branched, branchlets numerous and strongly differentiated; annual bud constrictions absent; leaves on main stem below lateral branchlets tightly appressed, needlelike, 3.5–4.5 × 0.6–0.7 mm, soft. <b>Lateral</b> branchlets flat in cross section, 6–9 mm diam.; annual bud constrictions inconspicuous. <b>Leaves</b> in 6 ranks, 1 on upperside, 4 lateral, ascending-spreading, 2.5–5.5 × 0.5–1.2 mm, and 1 on underside, much smaller than others, ascending; margins entire; apex lacking hair tip. <b>Strobili</b> 1–6 at tip of shoot, sessile, 12–60 mm. <b>Sporophylls</b> 3 × 2 mm, apex long, gradually narrowing. <b>2n</b> = 68.</span><!--
  
 
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-->{{#Taxon:
 
name=Lycopodium obscurum
 
name=Lycopodium obscurum
|author=
 
 
|authority=Linnaeus
 
|authority=Linnaeus
 
|rank=species
 
|rank=species
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|publication title=Sp. Pl.
 
|publication title=Sp. Pl.
 
|publication year=1753
 
|publication year=1753
|special status=
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|special status=Illustrated;Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_526.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_526.xml
 
|genus=Lycopodium
 
|genus=Lycopodium
 
|species=Lycopodium obscurum
 
|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
 
 
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-->[[Category:Treatment]][[Category:Lycopodium]]
 
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Latest revision as of 20:24, 5 November 2020

Horizontal stems subterranean. Upright shoots treelike, many branched, branchlets numerous and strongly differentiated; annual bud constrictions absent; leaves on main stem below lateral branchlets tightly appressed, needlelike, 3.5–4.5 × 0.6–0.7 mm, soft. Lateral branchlets flat in cross section, 6–9 mm diam.; annual bud constrictions inconspicuous. Leaves in 6 ranks, 1 on upperside, 4 lateral, ascending-spreading, 2.5–5.5 × 0.5–1.2 mm, and 1 on underside, much smaller than others, ascending; margins entire; apex lacking hair tip. Strobili 1–6 at tip of shoot, sessile, 12–60 mm. Sporophylls 3 × 2 mm, apex long, gradually narrowing. 2n = 68.


Habitat: Rich hardwood forests and successional shrubby areas
Elevation: 0–1600 m

Distribution

V2 526-distribution-map.gif

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.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Lycopodium obscurum"
Warren H. Wagner Jr. +  and Joseph M. Beitel +
Linnaeus +
Flat-branched tree club-moss +  and lycopode obscur +
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. +  and Wis. +
0–1600 m +
Rich hardwood forests and successional shrubby areas +
Illustrated +  and Endemic +
Lycopodium obscurum +
Lycopodium +
species +