Difference between revisions of "Helianthus pauciflorus"
Gen. N. Amer. Pl. 2: 177. 1818.
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|place=2: 177. 1818 | |place=2: 177. 1818 | ||
|year=1818 | |year=1818 | ||
+ | }} | ||
+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=E | ||
+ | |label=Endemic | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
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-->{{Treatment/Body | -->{{Treatment/Body | ||
− | |distribution= | + | |distribution=Alta.;B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ark.;Colo.;Conn.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.H.;N.J.;N.Mex.;Nebr.;Okla.;Pa.;R.I.;S.Dak.;Tex.;Va.;Vt.;Wis.;Wyo. |
|discussion=<p>Subspecies 2 (2 in the flora).</p><!-- | |discussion=<p>Subspecies 2 (2 in the flora).</p><!-- | ||
− | --><p>Variation within Helianthus pauciflorus is complex and is complicated by hybridization with H. tuberosus. Hybrids with H. tuberosus are known as H. ×laetiflorus, which is frequently cultivated.</p> | + | --><p>Variation within <i>Helianthus pauciflorus</i> is complex and is complicated by hybridization with <i>H. tuberosus</i>. Hybrids with <i>H. tuberosus</i> are known as <i>H. ×laetiflorus</i>, which is frequently cultivated.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Helianthus pauciflorus | name=Helianthus pauciflorus | ||
− | |||
|authority=Nuttall | |authority=Nuttall | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Asteraceae | |family=Asteraceae | ||
− | |distribution= | + | |distribution=Alta.;B.C.;Man.;N.B.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ark.;Colo.;Conn.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;N.Dak.;N.H.;N.J.;N.Mex.;Nebr.;Okla.;Pa.;R.I.;S.Dak.;Tex.;Va.;Vt.;Wis.;Wyo. |
|reference=None | |reference=None | ||
|publication title=Gen. N. Amer. Pl. | |publication title=Gen. N. Amer. Pl. | ||
|publication year=1818 | |publication year=1818 | ||
− | |special status= | + | |special status=Endemic |
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_385.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae | ||
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}}<!-- | }}<!-- | ||
− | -->[[Category:Treatment]][[Category:Helianthus]] | + | --> |
+ | |||
+ | [[Category:Treatment]] | ||
+ | [[Category:Helianthus]] | ||
+ | [[Category:Revised Since Print]] |
Latest revision as of 19:25, 6 November 2020
Perennials, 50–200 cm (rhizomatous). Stems erect, scabro-hispid. Leaves mostly basal; opposite, or opposite (proximal) and alternate; petioles 0–1 cm; blades lance-ovate to oblong-lanceolate, or rhombic-ovate to lance-linear, 5–27 × 2–6 cm, bases cuneate, margins serrate to subentire, abaxial faces sparsely hispid, sparsely, if at all, gland-dotted (cauline smaller). Heads 1–10. Peduncles 3–12 cm. Involucres hemispheric, 15–23 mm diam. Phyllaries 25–35, ovate, 6–10 × 3–5 mm, (margins ciliate) apices acute, abaxial faces glabrate to hispid. Paleae 9–10 mm, shallowly 3-toothed to subentire (apices ciliate, hairy). Ray florets 10–20; laminae 20–35 mm (abaxial faces usually gland-dotted). Disc florets 75+; corollas 6.5–7 mm, lobes usually reddish, sometimes yellow; anthers dark, appendages dark (style branches yellow). Cypselae 5–6 mm, glabrate; pappi of 2 aristate scales 4.5–5 mm plus 1–4 smaller aristate scales 0.3–2 mm. 2n = 102 (subspecies unknown).
Distribution
![V21-385-distribution-map.gif](/w/images/5/5c/V21-385-distribution-map.gif)
Alta., B.C., Man., N.B., N.S., Ont., P.E.I., Que., Sask., Ark., Colo., Conn., Ga., Ill., Ind., Iowa, Kans., Ky., Maine, Mass., Mich., Minn., Mo., Mont., N.Dak., N.H., N.J., N.Mex., Nebr., Okla., Pa., R.I., S.Dak., Tex., Va., Vt., Wis., Wyo.
Discussion
Subspecies 2 (2 in the flora).
Variation within Helianthus pauciflorus is complex and is complicated by hybridization with H. tuberosus. Hybrids with H. tuberosus are known as H. ×laetiflorus, which is frequently cultivated.
Selected References
None.
Key
1 | Plants 80–200 cm; leaves usually alternate distally, blades oblong-lanceolate to lance-ovate, 8–27 cm, apices acuminate | Helianthus pauciflorus subsp. pauciflorus |
1 | Plants 50–120 cm; leaves opposite, blades rhombic-ovate to lance-linear, 5–12 cm, apices acute or obtuse | Helianthus pauciflorus subsp. subrhomboideus |