Difference between revisions of "Thelypteris palustris var. pubescens"

(Lawson) Fernald

Rhodora 31: 34. 1929.

Basionym: Lastrea thelypteris var. pubescens Lawson
Synonyms: Dryopteris thelypteris var. pubescens (Lawson) WeatherbyThelypteris palustris var. haleana Fernald
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="stem growth form or orientation;stem diameter"><b>Stems </b>long-creeping, 1–3 mm diam.</span> <span class="statement" id="st-d0_s1" data-properties="leaf architecture;leaf growth form;leaf condition;leaf some measurement;leaf arrangement;leaf reproduction;leaf orientation;leaf width;leaf some measurement;pinna condition or size"><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.</span> <span class="statement" id="st-d0_s2" data-properties="petiole coloration;petiole atypical length;petiole length;petiole width;scale coloration;scale shape;scale pubescence"><b>Petiole </b>straw-colored above base, 9–45 (–60) cm × 1–3 mm, at base sparsely set with tan, ovate, glabrous scales.</span> <span class="statement" id="st-d0_s3" data-properties="blade shape;blade atypical some measurement;blade some measurement;proximal pinna height or length or size;blade shape;apex shape"><b>Blade </b>lanceolate, 10–40 (–55) cm, proximal pinnae commonly slightly shorter, blade tapering gradually to pinnatifid apex.</span> <span class="statement" id="st-d0_s4" data-properties="pinna shape;pinna length;pinna width"><b>Pinnae </b>pinnatifid to within 1 mm of costa, 2–10 × 0.5–2 cm;</span> <span class="statement" id="st-d0_s5" data-properties="segment shape;segment orientation or shape;segment architecture or shape">segments oblong, somewhat oblique, entire;</span> <span class="statement" id="st-d0_s6" data-properties="segment arrangement;vein shape">proximal pair of veins from adjacent segments meeting margin above sinus, veins frequently forked.</span> <span class="statement" id="st-d0_s7" data-properties="scale count;scale size;scale coloration;blade tissue pubescence"><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.</span> <span class="statement" id="st-d0_s8" data-properties="sorus shape;sorus position"><b>Sori </b>round, medial;</span> <span class="statement" id="st-d0_s9" data-properties="indusium coloration;indusium pubescence">indusia tan, often hairy;</span> <span class="statement" id="st-d0_s10" data-properties="">sporangia glabrous.</span> <span class="statement" id="st-d0_s11" data-properties="sporangium pubescence;2n chromosome count">2n = 70.</span><!--
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--><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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|publication year=1929
 
|publication year=1929
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_488.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_488.xml
 
|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
|2n chromosome count=70
 
|apex shape=pinnatifid
 
|blade atypical some measurement=40cm;55cm
 
|blade shape=tapering;lanceolate
 
|blade some measurement=10cm;40cm
 
|blade tissue pubescence=glabrous
 
|indusium coloration=tan
 
|indusium pubescence=hairy
 
|leaf architecture=monomorphic
 
|leaf arrangement=apart
 
|leaf condition=dying
 
|leaf growth form=dimorphic
 
|leaf orientation=erect
 
|leaf reproduction=fertile
 
|leaf some measurement=20cm;90cm
 
|leaf width=narrower
 
|petiole atypical length=45cm;60cm
 
|petiole coloration=straw-colored
 
|petiole length=9cm;45cm
 
|petiole width=1mm;3mm
 
|pinna condition or size=contracted
 
|pinna length=2cm;10cm
 
|pinna shape=pinnatifid
 
|pinna width=0.5cm;2cm
 
|proximal pinna height or length or size=shorter
 
|scale coloration=tan;tan
 
|scale count=few
 
|scale pubescence=glabrous
 
|scale shape=ovate
 
|scale size=small
 
|segment architecture or shape=entire
 
|segment arrangement=adjacent
 
|segment orientation or shape=oblique
 
|segment shape=oblong
 
|sorus position=medial
 
|sorus shape=round
 
|sporangium pubescence=glabrous
 
|stem diameter=1mm;3mm
 
|stem growth form or orientation=long-creeping
 
|vein shape=forked
 
 
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Revision as of 13:21, 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

V2 488-distribution-map.gif

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.
Alan R. Smith +
(Lawson) Fernald +
Lastrea thelypteris 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. +
0–1000 m +
Terrestrial in swamps, bogs, and marshes, also along riverbanks and roadside ditches, and in wet woods +
Dryopteris thelypteris var. pubescens +  and Thelypteris palustris var. haleana +
Thelypteris palustris var. pubescens +
Thelypteris palustris +
variety +