Difference between revisions of "Pellaea bridgesii"
Sp. Fil. 2: 238, plate 142b. 1858.
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>compact, ascending, stout, 5–10 mm diam.; scales mostly weakly bicolored, linear-subulate, 0.1–0.3 mm wide, centers dark brown, thin, margins lighter, thin, denticulate to entire. <b>Leaves</b> monomorphic, clustered on stem, 7–30 cm; croziers nearly glabrous. <b>Petiole</b> dark brown, lustrous, rounded adaxially, without prominent articulation lines. <b>Blade</b> linear, 1-pinnate, 1.5–4 cm wide; rachis brown throughout, straight, rounded adaxially, glabrous. <b>Pinnae</b> perpendicular to slightly ascending, usually not decurrent on rachis, simple and unlobed; costae absent. <b>Ultimate</b> segments broadly ovate to elliptic, 7–20 mm, leathery, glabrous; margins plane, not recurved, not covering abaxial surface, borders whitish, entire; apex obtuse to rounded. <b>Veins</b> of ultimate segments obscure. <b>Sporangia</b> sessile or subsessile, containing 64 spores, intermixed with abundant farina-producing glands. <b>2n</b> = 58.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Sporulating summer–fall. | ||
|habitat=Rocky slopes and cliffs, on granitic substrates | |habitat=Rocky slopes and cliffs, on granitic substrates | ||
|elevation=1200–3600 m | |elevation=1200–3600 m | ||
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|basionyms= | |basionyms= | ||
|family=Pteridaceae | |family=Pteridaceae | ||
| + | |phenology=Sporulating summer–fall. | ||
|habitat=Rocky slopes and cliffs, on granitic substrates | |habitat=Rocky slopes and cliffs, on granitic substrates | ||
|elevation=1200–3600 m | |elevation=1200–3600 m | ||
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|publication year=1858 | |publication year=1858 | ||
|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_407.xml |
|genus=Pellaea | |genus=Pellaea | ||
|species=Pellaea bridgesii | |species=Pellaea bridgesii | ||
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-->[[Category:Treatment]][[Category:Pellaea]] | -->[[Category:Treatment]][[Category:Pellaea]] | ||
Revision as of 13:19, 27 July 2019
Stems compact, ascending, stout, 5–10 mm diam.; scales mostly weakly bicolored, linear-subulate, 0.1–0.3 mm wide, centers dark brown, thin, margins lighter, thin, denticulate to entire. Leaves monomorphic, clustered on stem, 7–30 cm; croziers nearly glabrous. Petiole dark brown, lustrous, rounded adaxially, without prominent articulation lines. Blade linear, 1-pinnate, 1.5–4 cm wide; rachis brown throughout, straight, rounded adaxially, glabrous. Pinnae perpendicular to slightly ascending, usually not decurrent on rachis, simple and unlobed; costae absent. Ultimate segments broadly ovate to elliptic, 7–20 mm, leathery, glabrous; margins plane, not recurved, not covering abaxial surface, borders whitish, entire; apex obtuse to rounded. Veins of ultimate segments obscure. Sporangia sessile or subsessile, containing 64 spores, intermixed with abundant farina-producing glands. 2n = 58.
Phenology: Sporulating summer–fall.
Habitat: Rocky slopes and cliffs, on granitic substrates
Elevation: 1200–3600 m
Distribution
Calif., Idaho, Nev., Oreg.
Discussion
The morphology of Pellaea bridgesii is so distinctive that its sectional (and even generic) placement in Pellaea has long been a source of contention. W. H. Wagner Jr. et al. (1983) documented the existence of sterile diploid hybrids (called P. × glaciogena) between P. bridgesii and P. mucronata (see reticulogram), suggesting that P. bridgesii is most closely related to members of sect. Pellaea. In addition to the more obvious characters mentioned above, P. bridgesii is distinguished from other North American species (except P. ternifolia) by its anastomosing veins.
Selected References
None.
Lower Taxa
None.