familyThelypteridaceae
genusThelypteris
subgenusThelypteris subg. Thelypteris
speciesThelypteris palustris
Difference between revisions of "Thelypteris palustris var. pubescens"
Rhodora 31: 34. 1929.
Basionym: Lastrea thelypteris var. pubescens Lawson
Synonyms: Dryopteris thelypteris var. pubescens (Lawson) WeatherbyThelypteris palustris var. haleana Fernald
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>long-creeping, 1–3 mm diam. <b>Leaves</b> 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. <b>Petiole</b> straw-colored above base, 9–45(–60) cm × 1–3 mm, at base sparsely set with tan, ovate, glabrous scales. <b>Blade</b> lanceolate, 10–40(–55) cm, proximal pinnae commonly slightly shorter, blade tapering gradually to pinnatifid apex. <b>Pinnae</b> 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. <b>Indument</b> 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. <b>Sori</b> round, medial; indusia tan, often hairy; sporangia glabrous. <b>2n</b> = 70.</span><!-- |
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|genus=Thelypteris | |genus=Thelypteris | ||
|subgenus=Thelypteris subg. Thelypteris | |subgenus=Thelypteris subg. Thelypteris | ||
|species=Thelypteris palustris | |species=Thelypteris palustris | ||
|variety=Thelypteris palustris var. pubescens | |variety=Thelypteris palustris var. pubescens | ||
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Revision as of 14:21, 27 July 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.
Lower Taxa
None.
... more about "Thelypteris palustris var. pubescens"
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 + and Cuba. +
Terrestrial in swamps, bogs, and marshes, also along riverbanks and roadside ditches, and in wet woods +
Rhodora +
1929 +
Thelypteris palustris var. pubescens +
Thelypteris palustris +
variety +