Difference between revisions of "Helianthus heterophyllus"
J. Acad. Nat. Sci. Philadelphia 7: 74. 1834.
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|common_names=Wetland sunflower | |common_names=Wetland sunflower | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Helianthus elongatus | |name=Helianthus elongatus | ||
|authority=Small | |authority=Small | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Helianthus;Helianthus heterophyllus | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Helianthinae;Helianthus;Helianthus heterophyllus | ||
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|elevation=0–50+ m | |elevation=0–50+ m | ||
|distribution=Ala.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex. | |distribution=Ala.;Fla.;Ga.;La.;Miss.;N.C.;S.C.;Tex. | ||
| − | |discussion=<p>Helianthus heterophyllus is found on the Atlantic and Gulf coastal plains. The cauline leaves are usually abruptly reduced relative to the basal leaves; individuals sometimes have relatively large cauline leaves.</p> | + | |discussion=<p><i>Helianthus heterophyllus</i> is found on the Atlantic and Gulf coastal plains. The cauline leaves are usually abruptly reduced relative to the basal leaves; individuals sometimes have relatively large cauline leaves.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Helianthus heterophyllus | name=Helianthus heterophyllus | ||
| − | |||
|authority=Nuttall | |authority=Nuttall | ||
|rank=species | |rank=species | ||
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|publication title=J. Acad. Nat. Sci. Philadelphia | |publication title=J. Acad. Nat. Sci. Philadelphia | ||
|publication year=1834 | |publication year=1834 | ||
| − | |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_368.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Helianthinae | ||
Latest revision as of 20:11, 5 November 2020
Perennials, 50–120 cm (with crown buds). Stems erect, usually hispid to ± hirsute. Leaves mostly basal; mostly opposite; petioles 0–3 cm (broadly winged); blades (3-nerved distal to bases) ovate or lanceolate to spatulate, 6–28 × 1.2–4.3 cm, bases cuneate, margins entire (often revolute), abaxial faces hispid to ± hirsute, not gland-dotted (cauline leaves relatively few, narrowly lanceolate to linear, much smaller). Heads 1–3(–5). Peduncles 10–15 cm. Involucres broadly hemispheric, 15–25 mm diam. Phyllaries 24–30, lanceolate to lance-ovate, 8–13 × 2–5 mm, (margins sometimes ciliate) apices acute to short-acuminate or acuminate, abaxial faces sparsely hispid to glabrate. Paleae 7–9 mm, 3-toothed (apices purplish). Ray florets 12–18; laminae 14–36 mm (abaxial faces not gland-dotted). Disc florets 100+; corollas 5.5–6.5 mm, lobes reddish; anthers purplish, apendages purplish (style branches usually reddish). Cypselae 4–5 mm, glabrate; pappi of 2 aristate scales 1.7–2.5 mm plus 1–3 deltate scales 0.5–1.5 mm. 2n = 34.
Phenology: Flowering late summer–fall.
Habitat: Wet sandy soils
Elevation: 0–50+ m
Distribution
Ala., Fla., Ga., La., Miss., N.C., S.C., Tex.
Discussion
Helianthus heterophyllus is found on the Atlantic and Gulf coastal plains. The cauline leaves are usually abruptly reduced relative to the basal leaves; individuals sometimes have relatively large cauline leaves.
Selected References
None.