Difference between revisions of "Woodsia obtusa subsp. obtusa"
Endemic
Treatment appears in FNA Volume 2.
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Woodsia obtusa subsp. obtusa | |accepted_name=Woodsia obtusa subsp. obtusa | ||
| − | |accepted_authority=( | + | |accepted_authority=(Swartz) Torrey |
|publications= | |publications= | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
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|basionyms= | |basionyms= | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>compact to short-creeping, individual branches usually 5–10 mm diam. <b>Blade</b> coarsely cut and evidently 2-pinnate. <b>Proximal</b> pinnules of lower pinnae usually shallowly lobed or merely dentate. <b>Spores</b> averaging 42–47 µm. <b>2n</b> = 152.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Sporulating summer–fall. | ||
|habitat=Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone | |habitat=Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone | ||
|elevation=0–1000 m | |elevation=0–1000 m | ||
|distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis. | |distribution=Ont.;Que.;Ala.;Ark.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis. | ||
| − | |discussion=<p>D. F. M. Brown (1964) hypothesized that tetraploid Woodsia obtusa might be an autopolyploid derived from W. oregana. Recent isozyme and spore ornamentation studies indicate, however, that these species are not closely related, and the discovery of a diploid cytotype of W. obtusa suggests a different (albeit autopolyploid) origin for this taxon (M. D. Windham 1993). Tetraploid subsp. obtusa crosses with diploid subsp. occidentalis; the resulting triploids are sterile and have malformed spores. It also hybridizes with W. oregana subsp. cathcartiana to form the sterile tetraploid hybrid known as W. × kansana Brooks.</p> | + | |discussion=<p>D. F. M. Brown (1964) hypothesized that tetraploid <i>Woodsia obtusa</i> might be an autopolyploid derived from <i>W. oregana</i>. Recent isozyme and spore ornamentation studies indicate, however, that these species are not closely related, and the discovery of a diploid cytotype of <i>W. obtusa</i> suggests a different (albeit autopolyploid) origin for this taxon (M. D. Windham 1993). Tetraploid <i></i>subsp.<i> obtusa</i> crosses with diploid <i></i>subsp.<i> occidentalis</i>; the resulting triploids are sterile and have malformed spores. It also hybridizes with <i>W. oregana </i>subsp.<i> cathcartiana</i> to form the sterile tetraploid hybrid known as W. × kansana Brooks.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Woodsia obtusa subsp. obtusa | name=Woodsia obtusa subsp. obtusa | ||
| − | + | |authority=(Swartz) Torrey | |
| − | |authority=( | ||
|rank=subspecies | |rank=subspecies | ||
|parent rank=species | |parent rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Dryopteridaceae | |family=Dryopteridaceae | ||
| + | |phenology=Sporulating summer–fall. | ||
|habitat=Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone | |habitat=Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone | ||
|elevation=0–1000 m | |elevation=0–1000 m | ||
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|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_182.xml |
|genus=Woodsia | |genus=Woodsia | ||
|species=Woodsia obtusa | |species=Woodsia obtusa | ||
|subspecies=Woodsia obtusa subsp. obtusa | |subspecies=Woodsia obtusa subsp. obtusa | ||
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| − | -->[[Category:Treatment]][[Category:Woodsia obtusa]] | + | --> |
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| + | [[Category:Treatment]] | ||
| + | [[Category:Woodsia obtusa]] | ||
| + | [[Category:Revised Since Print]] | ||
Latest revision as of 19:37, 6 November 2020
Stems compact to short-creeping, individual branches usually 5–10 mm diam. Blade coarsely cut and evidently 2-pinnate. Proximal pinnules of lower pinnae usually shallowly lobed or merely dentate. Spores averaging 42–47 µm. 2n = 152.
Phenology: Sporulating summer–fall.
Habitat: Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone
Elevation: 0–1000 m
Distribution
Ont., Que., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis.
Discussion
D. F. M. Brown (1964) hypothesized that tetraploid Woodsia obtusa might be an autopolyploid derived from W. oregana. Recent isozyme and spore ornamentation studies indicate, however, that these species are not closely related, and the discovery of a diploid cytotype of W. obtusa suggests a different (albeit autopolyploid) origin for this taxon (M. D. Windham 1993). Tetraploid subsp. obtusa crosses with diploid subsp. occidentalis; the resulting triploids are sterile and have malformed spores. It also hybridizes with W. oregana subsp. cathcartiana to form the sterile tetraploid hybrid known as W. × kansana Brooks.
Selected References
None.
Lower Taxa
None.
... more about "Woodsia obtusa subsp. obtusa"
Ont. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. + and Wis. +
Cliffs and rocky slopes (rarely terrestrial), found on a variety of substrates including both granite and limestone +
New York State, Rep. Geol. Surv. +
1840 +
Endemic +
Woodsia obtusa subsp. obtusa +
Woodsia obtusa +
subspecies +