Difference between revisions of "Polypodium scouleri"

Hooker & Greville

Icon. Filic. 1: 56. 1829.

Common names: Coast polypody
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="stem coloration;stem coating;stem fragility or size;stem diameter;stem taste;stem taste;stem taste"><b>Stems </b>conspicuously whitish pruinose, stout, 3–12 mm diam., bland to slightly sweet-tasting;</span> <span class="statement" id="st-d0_s1" data-properties="scale coloration;scale coloration;scale coloration;scale coloration;scale coloration;scale shape;scale architecture or shape;margin coloration;margin shape">scales concolored to weakly bicolored, uniformly dark-brown or with pale margins and base, lanceolate, symmetric, margins denticulate.</span> <span class="statement" id="st-d0_s2" data-properties=""><b>Leaves </b>to 85 cm.</span> <span class="statement" id="st-d0_s3" data-properties="petiole fragility or size;petiole diameter"><b>Petiole </b>stout, to 3 mm diam.</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;blade shape;blade width;blade width;blade fragility;blade texture"><b>Blade </b>ovatelanceolate, pinnatifid, usually widest just above base, to 27 cm wide, stiff and leathery;</span> <span class="statement" id="st-d0_s5" data-properties="rachis pubescence;rachis pubescence;rachis pubescence;rachis pubescence">rachis sparsely scaly to glabrescent abaxially, glabrous adaxially;</span> <span class="statement" id="st-d0_s6" data-properties="scale coloration;scale shape;scale count;cell width">scales bicolored, ovatelanceolate, much more than 6 cells wide.</span> <span class="statement" id="st-d0_s7" data-properties="segment shape;segment shape;segment shape;segment width"><b>Segments </b>oblong to linear, usually more than 12 mm wide;</span> <span class="statement" id="st-d0_s8" data-properties="margin shape;margin shape;margin shape">margins entire to crenulate;</span> <span class="statement" id="st-d0_s9" data-properties="apex shape;apex shape;apex shape">apex rounded to rarely broadly acute;</span> <span class="statement" id="st-d0_s10" data-properties="">midrib glabrous adaxially.</span> <span class="statement" id="st-d0_s11" data-properties="midrib pubescence;midrib architecture;row count"><b>Venation </b>anastomosing, usually forming 1 row of areoles.</span> <span class="statement" id="st-d0_s12" data-properties="sorus arrangement;sorus diameter;sorus arrangement or shape"><b>Sori </b>crowded against midrib, usually more than 3 mm diam., circular when immature.</span> <span class="statement" id="st-d0_s13" data-properties="sporangiaster count"><b>Sporangiasters </b>absent.</span> <span class="statement" id="st-d0_s14" data-properties="spore some measurement;spore relief"><b>Spores </b>usually less than 52 µm, rugose, surface projections less than 3 µm tall.</span> <span class="statement" id="st-d0_s15" data-properties="surface projection height;2n chromosome count;2n chromosome count">2n = 74, 111.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>conspicuously whitish pruinose, stout, 3–12 mm diam., bland to slightly sweet-tasting; scales concolored to weakly bicolored, uniformly dark brown or with pale margins and base, lanceolate, symmetric, margins denticulate. <b>Leaves</b> to 85 cm. <b>Petiole</b> stout, to 3 mm diam. <b>Blade</b> ovate-lanceolate, pinnatifid, usually widest just above base, to 27 cm wide, stiff and leathery; rachis sparsely scaly to glabrescent abaxially, glabrous adaxially; scales bicolored, ovate-lanceolate, much more than 6 cells wide. <b>Segments</b> oblong to linear, usually more than 12 mm wide; margins entire to crenulate; apex rounded to rarely broadly acute; midrib glabrous adaxially. <b>Venation</b> anastomosing, usually forming 1 row of areoles. <b>Sori</b> crowded against midrib, usually more than 3 mm diam., circular when immature. <b>Sporangiasters</b> absent. <b>Spores</b> usually less than 52 µm, rugose, surface projections less than 3 µm tall. <b>2n</b> = 74, 111.</span><!--
  
 
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|phenology=Sporulating late fall–spring.
 
|habitat=Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean
 
|habitat=Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean
 
|elevation=0–500 m
 
|elevation=0–500 m
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|basionyms=
 
|basionyms=
 
|family=Polypodiaceae
 
|family=Polypodiaceae
 +
|phenology=Sporulating late fall–spring.
 
|habitat=Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean
 
|habitat=Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean
 
|elevation=0–500 m
 
|elevation=0–500 m
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|publication year=1829
 
|publication year=1829
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_376.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_376.xml
 
|genus=Polypodium
 
|genus=Polypodium
 
|species=Polypodium scouleri
 
|species=Polypodium scouleri
|2n chromosome count=111;74
 
|apex shape=rounded;rarely broadly acute
 
|blade fragility=stiff
 
|blade shape=pinnatifid;ovatelanceolate
 
|blade texture=leathery
 
|blade width=0cm;27cm
 
|cell width=wide
 
|margin coloration=pale
 
|margin shape=entire;crenulate
 
|midrib architecture=anastomosing
 
|midrib pubescence=glabrous
 
|petiole diameter=0mm;3mm
 
|petiole fragility or size=stout
 
|rachis pubescence=glabrous;sparsely scaly;glabrescent abaxially
 
|row count=1
 
|scale architecture or shape=symmetric
 
|scale coloration=bicolored;with pale margins and base;dark-brown;concolored;weakly bicolored
 
|scale shape=ovatelanceolate;lanceolate
 
|segment shape=oblong;linear
 
|sorus arrangement=crowded
 
|sorus arrangement or shape=circular
 
|sporangiaster count=absent
 
|spore relief=rugose
 
|spore some measurement=0um;52um
 
|stem coating=pruinose
 
|stem coloration=whitish
 
|stem diameter=3mm;12mm
 
|stem fragility or size=stout
 
|stem taste=bland;slightly sweet-tasting
 
|surface projection height=0um;3um
 
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Polypodium]]
 
-->[[Category:Treatment]][[Category:Polypodium]]

Revision as of 13:18, 27 July 2019

Stems conspicuously whitish pruinose, stout, 3–12 mm diam., bland to slightly sweet-tasting; scales concolored to weakly bicolored, uniformly dark brown or with pale margins and base, lanceolate, symmetric, margins denticulate. Leaves to 85 cm. Petiole stout, to 3 mm diam. Blade ovate-lanceolate, pinnatifid, usually widest just above base, to 27 cm wide, stiff and leathery; rachis sparsely scaly to glabrescent abaxially, glabrous adaxially; scales bicolored, ovate-lanceolate, much more than 6 cells wide. Segments oblong to linear, usually more than 12 mm wide; margins entire to crenulate; apex rounded to rarely broadly acute; midrib glabrous adaxially. Venation anastomosing, usually forming 1 row of areoles. Sori crowded against midrib, usually more than 3 mm diam., circular when immature. Sporangiasters absent. Spores usually less than 52 µm, rugose, surface projections less than 3 µm tall. 2n = 74, 111.


Phenology: Sporulating late fall–spring.
Habitat: Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean
Elevation: 0–500 m

Distribution

V2 376-distribution-map.gif

B.C., Calif., Oreg., Wash., Mexico in Baja California.

Discussion

The distinctive Polypodium scouleri has occasionally been assigned to the genus Goniophlebium because of its anastomosing venation and conspicuous areoles. Its venation pattern can be quite variable, however, and cannot be used as the sole feature distinguishing P. scouleri from P. californicum. Combining venation characteristics with others provided in the key distinguishes it clearly from its congeners in Polypodium. Some evidence suggests that P. scouleri hybridizes with P. californicum (S. A. Whitmore, unpubl.). I. Manton (1951) reported diploid and triploid cytotypes for P. scouleri, and variation in spore size suggests that the species may also include tetraploid populations.

Selected References

None.

Lower Taxa

None.
... more about "Polypodium scouleri"
Christopher H. Haufler +, Michael D. Windham +, Frank A. Lang +  and S. A. Whitmore +
Hooker & Greville +
Coast polypody +
B.C. +, Calif. +, Oreg. +, Wash. +  and Mexico in Baja California. +
0–500 m +
Cracks and ledges on cliffs, occasionally epiphytic, on a variety of substrates but preferring volcanic substrates in warmer, drier climates, rarely far from ocean +
Sporulating late fall–spring. +
Icon. Filic. +
Polypodium scouleri +
Polypodium +
species +