Difference between revisions of "Argyrochosma dealbata"
Amer. Fern J. 77: 40. 1987.
Basionym: Cheilanthes dealbata Pursh
Synonyms: Notholaena dealbata (Pursh) KunzePellaea dealbata (Pursh) Prantl
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stem </b>scales brown. <b>Leaves</b> 3–15 cm. <b>Petiole</b> chestnut brown, 0.50–0.75 mm diam. <b>Blade</b> deltate, 3–5-pinnate proximally, somewhat herbaceous, abaxially covered by whitish farina, adaxially glabrous or sparsely glandular; rachis rounded to slightly flattened adaxially. <b>Pinna</b> costae straight or nearly so, branches not arising from prominent angles. <b>Ultimate</b> segments not articulate, dark color of stalks continuing into segment bases abaxially; segment margins recurved, often partially concealing sporangia; veins often visible adaxially. <b>Sporangia</b> submarginal, borne on distal 1/3 of secondary veins, containing 64 spores. <b>2n</b> = 54.</span><!-- |
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| + | |phenology=Sporulating summer–fall. | ||
|habitat=Calcareous cliffs and ledges | |habitat=Calcareous cliffs and ledges | ||
|elevation=100–600 m | |elevation=100–600 m | ||
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|basionyms=Cheilanthes dealbata | |basionyms=Cheilanthes dealbata | ||
|family=Pteridaceae | |family=Pteridaceae | ||
| + | |phenology=Sporulating summer–fall. | ||
|habitat=Calcareous cliffs and ledges | |habitat=Calcareous cliffs and ledges | ||
|elevation=100–600 m | |elevation=100–600 m | ||
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|publication year=1987 | |publication year=1987 | ||
|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_32.xml |
|genus=Argyrochosma | |genus=Argyrochosma | ||
|species=Argyrochosma dealbata | |species=Argyrochosma dealbata | ||
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-->[[Category:Treatment]][[Category:Argyrochosma]] | -->[[Category:Treatment]][[Category:Argyrochosma]] | ||
Revision as of 13:17, 27 July 2019
Stem scales brown. Leaves 3–15 cm. Petiole chestnut brown, 0.50–0.75 mm diam. Blade deltate, 3–5-pinnate proximally, somewhat herbaceous, abaxially covered by whitish farina, adaxially glabrous or sparsely glandular; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles. Ultimate segments not articulate, dark color of stalks continuing into segment bases abaxially; segment margins recurved, often partially concealing sporangia; veins often visible adaxially. Sporangia submarginal, borne on distal 1/3 of secondary veins, containing 64 spores. 2n = 54.
Phenology: Sporulating summer–fall.
Habitat: Calcareous cliffs and ledges
Elevation: 100–600 m
Distribution
Ark., Ill., Kans., Ky., Mo., Nebr., Okla., Tex.
Discussion
The distinctions between Argyrochosma dealbata and A. limitanea are subtle but apparently absolute. Although both occur in Texas, their ranges do not overlap. Despite the morphologic similarities, isozyme analyses indicate that A. dealbata, a diploid species, was not involved in the origin of polyploid A. limitanea.
Selected References
None.
Lower Taxa
None.