Difference between revisions of "Asplenium exiguum"

Beddome

Ferns S. India plate 146. 1864.

Common names: Little spleenwort
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="root reproduction"><b>Roots </b>not proliferous.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem orientation;stem architecture"><b>Stems </b>erect or ascending, unbranched;</span> <span class="statement" id="st-d0_s2" data-properties="scale coloration;scale shape;scale length;scale width;tooth arrangement;tooth depth">scales black throughout, narrowly deltate, 2–3 × 0.2–0.3 mm, margins mostly with widely spaced, shallow teeth.</span> <span class="statement" id="st-d0_s3" data-properties="leaf architecture"><b>Leaves </b>monomorphic.</span> <span class="statement" id="st-d0_s4" data-properties="petiole coloration;petiole reflectance;petiole some measurement;petiole length"><b>Petiole </b>dark reddish-brown throughout, dull, 1–3 cm, 1/10–1/6 length of blade;</span> <span class="statement" id="st-d0_s5" data-properties="scale coloration;scale shape">indument of black filiform scales.</span> <span class="statement" id="st-d0_s6" data-properties="blade shape;blade shape;blade shape;blade shape;blade length;blade width;blade width;blade pubescence"><b>Blade </b>lanceolate, 2-pinnate to 2-pinnate-pinnatifid, 4–10 × 1–3 cm, thin, sparsely pubescent;</span> <span class="statement" id="st-d0_s7" data-properties="base shape">base tapering;</span> <span class="statement" id="st-d0_s8" data-properties="apex shape;apex shape;apex shape;bud size;bud architecture or pubescence;bud reproduction">apex acute to acuminate, often bearing minute, scaly, proliferous bud.</span> <span class="statement" id="st-d0_s9" data-properties="rachis coloration;rachis coloration;rachis coloration;rachis coloration;scale count;scale shape"><b>Rachis </b>basally reddish-brown, fading to green in distal 1/2 to 3/4, dull, sparsely pubescent and with a few filiform scales.</span> <span class="statement" id="st-d0_s10" data-properties="pinna count;pinna size or width;pinna shape"><b>Pinnae </b>10–20 pairs, narrow, oblong;</span> <span class="statement" id="st-d0_s11" data-properties="medial pinna length;medial pinna width">medial pinnae 5–12 × 4–7 mm;</span> <span class="statement" id="st-d0_s12" data-properties="base shape;base shape;base shape">base acute to obtuse;</span> <span class="statement" id="st-d0_s13" data-properties="margin shape">margins coarsely incised;</span> <span class="statement" id="st-d0_s14" data-properties="apex shape;bud reproduction">apex notched, bearing proliferous bud.</span> <span class="statement" id="st-d0_s15" data-properties="vein fusion;vein prominence"><b>Veins </b>free, obscure.</span> <span class="statement" id="st-d0_s16" data-properties="sorus count;side orientation;side orientation"><b>Sori </b>1–4 pairs per pinna, on both basiscopic and acroscopic sides.</span> <span class="statement" id="st-d0_s17" data-properties=""><b>Spores </b>64 per sporangium.</span> <span class="statement" id="st-d0_s18" data-properties="spore count;2n chromosome count">2n = 72.</span><!--
+
--><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>not proliferous. <b>Stems</b> erect or ascending, unbranched; scales black throughout, narrowly deltate, 2–3 × 0.2–0.3 mm, margins mostly with widely spaced, shallow teeth. <b>Leaves</b> monomorphic. <b>Petiole</b> dark reddish brown throughout, dull, 1–3 cm, 1/10–1/6 length of blade; indument of black filiform scales. <b>Blade</b> lanceolate, 2-pinnate to 2-pinnate-pinnatifid, 4–10 × 1–3 cm, thin, sparsely pubescent; base tapering; apex acute to acuminate, often bearing minute, scaly, proliferous bud. <b>Rachis</b> basally reddish brown, fading to green in distal 1/2 to 3/4, dull, sparsely pubescent and with a few filiform scales. <b>Pinnae</b> 10–20 pairs, narrow, oblong; medial pinnae 5–12 × 4–7 mm; base acute to obtuse; margins coarsely incised; apex notched, bearing proliferous bud. <b>Veins</b> free, obscure. <b>Sori</b> 1–4 pairs per pinna, on both basiscopic and acroscopic sides. <b>Spores</b> 64 per sporangium. <b>2n</b> = 72.</span><!--
  
 
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|publication year=1864
 
|publication year=1864
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_81.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_81.xml
 
|genus=Asplenium
 
|genus=Asplenium
 
|species=Asplenium exiguum
 
|species=Asplenium exiguum
|2n chromosome count=72
 
|apex shape=notched;acute;acuminate
 
|base shape=acute;obtuse
 
|blade length=4cm;10cm
 
|blade pubescence=pubescent
 
|blade shape=2-pinnate;2-pinnate-pinnatifid
 
|blade width=thin;1cm;3cm
 
|bud architecture or pubescence=scaly
 
|bud reproduction=proliferous;proliferous
 
|bud size=minute
 
|leaf architecture=monomorphic
 
|margin shape=incised
 
|medial pinna length=5mm;12mm
 
|medial pinna width=4mm;7mm
 
|petiole coloration=dark reddish-brown
 
|petiole length=1/10 length of blade;1/6 length of blade
 
|petiole reflectance=dull
 
|petiole some measurement=1cm;3cm
 
|pinna count=10;20
 
|pinna shape=oblong
 
|pinna size or width=narrow
 
|rachis coloration=fading;green
 
|root reproduction=not proliferous
 
|scale coloration=black;black
 
|scale count=few
 
|scale length=2mm;3mm
 
|scale shape=filiform;filiform;deltate
 
|scale width=0.2mm;0.3mm
 
|side orientation=acroscopic;basiscopic
 
|sorus count=1;4
 
|spore count=64
 
|stem architecture=unbranched
 
|stem orientation=ascending;erect
 
|tooth arrangement=spaced
 
|tooth depth=shallow
 
|vein fusion=free
 
|vein prominence=obscure
 
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Asplenium]]
 
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Revision as of 14:28, 27 July 2019

Roots not proliferous. Stems erect or ascending, unbranched; scales black throughout, narrowly deltate, 2–3 × 0.2–0.3 mm, margins mostly with widely spaced, shallow teeth. Leaves monomorphic. Petiole dark reddish brown throughout, dull, 1–3 cm, 1/10–1/6 length of blade; indument of black filiform scales. Blade lanceolate, 2-pinnate to 2-pinnate-pinnatifid, 4–10 × 1–3 cm, thin, sparsely pubescent; base tapering; apex acute to acuminate, often bearing minute, scaly, proliferous bud. Rachis basally reddish brown, fading to green in distal 1/2 to 3/4, dull, sparsely pubescent and with a few filiform scales. Pinnae 10–20 pairs, narrow, oblong; medial pinnae 5–12 × 4–7 mm; base acute to obtuse; margins coarsely incised; apex notched, bearing proliferous bud. Veins free, obscure. Sori 1–4 pairs per pinna, on both basiscopic and acroscopic sides. Spores 64 per sporangium. 2n = 72.


Habitat: Cliffs
Elevation: 1200 m

Distribution

V2 81-distribution-map.gif

Ariz., Mexico, Asia in the Himalayas, Pacific Islands in the Philippines.

Discussion

Asplenium exiguum has an interesting disjunct distribution, its range barely extending into the United States. Its vegetative propagation by buds scattered on the blade was reported by J. T. Mickel (1976).

Selected References

None.

Lower Taxa

None.