Difference between revisions of "Thelypteris palustris var. pubescens"
Rhodora 31: 34. 1929.
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|name=Dryopteris thelypteris var. pubescens | |name=Dryopteris thelypteris var. pubescens | ||
|authority=(Lawson) Weatherby | |authority=(Lawson) Weatherby | ||
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|name=Thelypteris palustris var. haleana | |name=Thelypteris palustris var. haleana | ||
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|publication year=1929 | |publication year=1929 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_488.xml |
|genus=Thelypteris | |genus=Thelypteris | ||
|subgenus=Thelypteris subg. Thelypteris | |subgenus=Thelypteris subg. Thelypteris | ||
Revision as of 16:48, 18 September 2019
Stems long-creeping, 1–3 mm diam. Leaves monomorphic or slightly dimorphic, dying back in winter, often 1–3 cm apart, fertile leaves more erect, narrower, and with somewhat contracted pinnae and segments, 20–90 cm. Petiole straw-colored above base, 9–45(–60) cm × 1–3 mm, at base sparsely set with tan, ovate, glabrous scales. Blade lanceolate, 10–40(–55) cm, proximal pinnae commonly slightly shorter, blade tapering gradually to pinnatifid apex. Pinnae pinnatifid to within 1 mm of costa, 2–10 × 0.5–2 cm; segments oblong, somewhat oblique, entire; proximal pair of veins from adjacent segments meeting margin above sinus, veins frequently forked. Indument abaxially of sparsely to densely set hairs on costae and sometimes veins, costae also commonly with a few small, tan scales, blade tissue glabrous on both sides. Sori round, medial; indusia tan, often hairy; sporangia glabrous. 2n = 70.
Habitat: Terrestrial in swamps, bogs, and marshes, also along riverbanks and roadside ditches, and in wet woods
Elevation: 0–1000 m
Distribution
St. Pierre and Miquelon, Man., N.B., Nfld., N.S., Ont., P.E.I., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis., perhaps Mexico (as Dryopteris tremula H. Christ), West Indies in Bermuda, Cuba.
Discussion
Selected References
None.