genusPilea

Difference between revisions of "Pilea pumila"

(Linnaeus) A. Gray

Manual, 437. 1848.

Common names: Clearweed
Selected by author to be illustratedWeedy
Basionym: Urtica pumila Linnaeus Sp. Pl. 2: 984. 1753
Treatment appears in FNA Volume 3.
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|label=Weedy
 
|label=Weedy
 
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|basionyms={{Treatment/ID/Synonym
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|basionyms={{Treatment/ID/Basionym
 
|name=Urtica pumila
 
|name=Urtica pumila
 
|authority=Linnaeus
 
|authority=Linnaeus
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|publication_title=Sp. Pl.
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|publication_place=2: 984. 1753
 
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|synonyms=
 
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|elevation=0-2000 m
 
|elevation=0-2000 m
 
|distribution=N.B.;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.;Asia.
 
|distribution=N.B.;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.;Asia.
|discussion=<p>Typical plants have leaf blades with cuneate bases and 3-11 rounded teeth on each margin; plants with rounded leaf bases and 11-17 less rounded or acute teeth on each margin have been called <i>Pilea pumila</i> <i></i>var.<i> deamii</i> (Lunell) Fernald (M. L. Fernald 1936) [Adicea deamii Lunell, Amer. Midl. Naturalist 3: 10. 1913.]. Typical <i>P. pumila</i> also is found in eastern Asia, where three infraspecific taxa, <i>P. pumila </i>var.<i> pumila</i>, <i>P. pumila</i> var. hamaoi (Makino) C. J. Chen, and <i>P. pumila</i> var. obtusifolia C. J. Chen are recognized. This complex, which also includes <i>P. pauciflora</i> C. J. Chen, has been placed in <i>Pilea</i> series Pumilae C. J. Chen. Although the Asian plants are often vegetatively and florally indistinguishable from the North American plants, minor differences do occur in the achenes, especially in their markings and sculpturing when mature. Detailed studies are needed to clarify exact relationships.</p><!--
+
|discussion=<p>Typical plants have leaf blades with cuneate bases and 3-11 rounded teeth on each margin; plants with rounded leaf bases and 11-17 less rounded or acute teeth on each margin have been called <i>Pilea pumila</i> <i></i></i>var.<i><i> deamii</i> (Lunell) Fernald (M. L. Fernald 1936) [Adicea deamii Lunell, Amer. Midl. Naturalist 3: 10. 1913.]. Typical <i>P. pumila</i> also is found in eastern Asia, where three infraspecific taxa, <i>P. pumila </i>var.<i> pumila</i>, <i>P. pumila</i> var. hamaoi (Makino) C. J. Chen, and <i>P. pumila</i> var. obtusifolia C. J. Chen are recognized. This complex, which also includes <i>P. pauciflora</i> C. J. Chen, has been placed in <i>Pilea</i> series Pumilae C. J. Chen. Although the Asian plants are often vegetatively and florally indistinguishable from the North American plants, minor differences do occur in the achenes, especially in their markings and sculpturing when mature. Detailed studies are needed to clarify exact relationships.</p><!--
 
--><p>Native Americans used <i>Pilea pumila</i> medicinally to alleviate itching, to cure sinus problems, and to treat excessive hunger (D. E. Moerman 1986)</p>
 
--><p>Native Americans used <i>Pilea pumila</i> medicinally to alleviate itching, to cure sinus problems, and to treat excessive hunger (D. E. Moerman 1986)</p>
 
|tables=
 
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|publication year=1848
 
|publication year=1848
 
|special status=Selected by author to be illustrated;Weedy
 
|special status=Selected by author to be illustrated;Weedy
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V3/V3_965.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V3/V3_965.xml
 
|genus=Pilea
 
|genus=Pilea
 
|species=Pilea pumila
 
|species=Pilea pumila

Revision as of 20:56, 24 September 2019

Herbs, 0.7-7 dm. Stems simple, erect. Leaf blades elliptic to broadly elliptic or ovate, paired blades equal, 2-13 × 1-9 cm, margins dentate. Inflorescences crowded to lax. Flowers ca. 1 mm across. Achenes uniformly light colored or with streaks of purple, compressed, teardrop-shaped, 1.3-1.7 × 0.6-1.1 mm, smooth or purple striations sometimes raised. 2n = 24, 26.


Phenology: Flowering summer–fall.
Habitat: Moist to wet woods, woodland margins, along streams, shaded waste places
Elevation: 0-2000 m

Distribution

V3 965-distribution-map.gif

N.B., 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., Asia.

Discussion

Typical plants have leaf blades with cuneate bases and 3-11 rounded teeth on each margin; plants with rounded leaf bases and 11-17 less rounded or acute teeth on each margin have been called Pilea pumila var. deamii (Lunell) Fernald (M. L. Fernald 1936) [Adicea deamii Lunell, Amer. Midl. Naturalist 3: 10. 1913.]. Typical P. pumila also is found in eastern Asia, where three infraspecific taxa, P. pumila var. pumila, P. pumila var. hamaoi (Makino) C. J. Chen, and P. pumila var. obtusifolia C. J. Chen are recognized. This complex, which also includes P. pauciflora C. J. Chen, has been placed in Pilea series Pumilae C. J. Chen. Although the Asian plants are often vegetatively and florally indistinguishable from the North American plants, minor differences do occur in the achenes, especially in their markings and sculpturing when mature. Detailed studies are needed to clarify exact relationships.

Native Americans used Pilea pumila medicinally to alleviate itching, to cure sinus problems, and to treat excessive hunger (D. E. Moerman 1986)

Selected References

None.

Lower Taxa

None.
... more about "Pilea pumila"
David E. Boufford +
(Linnaeus) A. Gray +
Urtica pumila +
Clearweed +
N.B. +, 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. +  and Asia. +
0-2000 m +
Moist to wet woods, woodland margins, along streams, shaded waste places +
Flowering summer–fall. +
Selected by author to be illustrated +  and Weedy +
Adicea +
Pilea pumila +
species +