Difference between revisions of "Adiantum capillus-veneris"
Sp. Pl. 2: 1096. 1753.
Common names: Venus's-hair fern southern maidenhair
Synonyms: Adiantum capillus-veneris var. modestum (L. Underwood) FernaldAdiantum capillus-veneris var. protrusum FernaldAdiantum capillus-veneris var. rimicola (Slosson) Fernald
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>short-creeping; scales golden brown to medium brown, concolored, iridescent, margins entire or occasionally with single broad tooth near base. <b>Leaves</b> lax-arching or pendent, closely spaced, 15–75 cm. <b>Petiole</b> 0.5–1.5 mm diam., glabrous, occasionally glaucous. <b>Blade</b> lanceolate, pinnate, 10–45 × 4–15 cm, glabrous, gradually reduced distally; proximal pinnae 3(–4)-pinnate; rachis straight to flexuous, glabrous, not glaucous. <b>Segment</b> stalks 0.5–3.5 mm, dark color extending into segment base. <b>Ultimate</b> segments various, generally cuneate or fan-shaped to irregularly rhombic (plants in American southwest occasionally with segments nearly round), about as long as broad; base broadly to narrowly cuneate; margins shallowly to deeply lobed, incisions 0.5–7 mm, occasionally ± laciniate, sharply denticulate in sterile segments; apex rounded to acute. <b>Indusia</b> transversely oblong or crescent-shaped, 1–3(–7) mm, glabrous. <b>Spores</b> mostly 40–50 µm diam. <b>2n</b> = 120.</span><!-- |
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| + | |phenology=Sporulating spring–summer. | ||
|habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains | |habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains | ||
|elevation=0–2500 m | |elevation=0–2500 m | ||
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|basionyms= | |basionyms= | ||
|family=Pteridaceae | |family=Pteridaceae | ||
| + | |phenology=Sporulating spring–summer. | ||
|habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains | |habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains | ||
|elevation=0–2500 m | |elevation=0–2500 m | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_208.xml |
|genus=Adiantum | |genus=Adiantum | ||
|species=Adiantum capillus-veneris | |species=Adiantum capillus-veneris | ||
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Revision as of 14:14, 27 July 2019
Stems short-creeping; scales golden brown to medium brown, concolored, iridescent, margins entire or occasionally with single broad tooth near base. Leaves lax-arching or pendent, closely spaced, 15–75 cm. Petiole 0.5–1.5 mm diam., glabrous, occasionally glaucous. Blade lanceolate, pinnate, 10–45 × 4–15 cm, glabrous, gradually reduced distally; proximal pinnae 3(–4)-pinnate; rachis straight to flexuous, glabrous, not glaucous. Segment stalks 0.5–3.5 mm, dark color extending into segment base. Ultimate segments various, generally cuneate or fan-shaped to irregularly rhombic (plants in American southwest occasionally with segments nearly round), about as long as broad; base broadly to narrowly cuneate; margins shallowly to deeply lobed, incisions 0.5–7 mm, occasionally ± laciniate, sharply denticulate in sterile segments; apex rounded to acute. Indusia transversely oblong or crescent-shaped, 1–3(–7) mm, glabrous. Spores mostly 40–50 µm diam. 2n = 120.
Phenology: Sporulating spring–summer.
Habitat: Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains
Elevation: 0–2500 m
Distribution
B.C., Ala., Ariz., Ark., Calif., Colo., Fla., Ga., Ky., La., Miss., Mo., Nev., N.Mex., N.C., Okla., S.C., S.Dak., Tenn., Tex., Utah, Va., Mexico, West Indies, Central America, South America in Venezuela, Peru, tropical to warm temperate regions in Eurasia and Africa.
Discussion
No evident pattern to morphologic variation in the species is discernible, although a number of segregate species and infraspecific taxa have been recognized within North American Adiantum capillus-veneris. In the Eastern Hemisphere, the species is diploid, with 2n = 60 (I. Manton 1950). Several tetraploid counts have been reported from North America (W. H. Wagner Jr. 1963). Spore-measurement data suggest, however, that the polyploid cytotype may not be widely distributed. Further investigation is needed to determine whether Adiantum capillus-veneris populations in North America are conspecific with those in Eurasia and Africa.
Selected References
None.
Lower Taxa
None.
... more about "Adiantum capillus-veneris"
B.C. +, Ala. +, Ariz. +, Ark. +, Calif. +, Colo. +, Fla. +, Ga. +, Ky. +, La. +, Miss. +, Mo. +, Nev. +, N.Mex. +, N.C. +, Okla. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Va. +, Mexico +, West Indies +, Central America +, South America in Venezuela +, Peru + and tropical to warm temperate regions in Eurasia and Africa. +
Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains +
Present +
Sp. Pl. +
1753 +
Adiantum capillus-veneris +
Adiantum +
species +