Difference between revisions of "Helianthus simulans"

E. Watson

Pap. Michigan Acad. Sci. 9: 363, plate 49. 1929.

Common names: Muck sunflower
Endemic
Treatment appears in FNA Volume 21. Treatment on page 164. Mentioned on page 144, 147.
FNA>Volume Importer
imported>Volume Importer
 
(3 intermediate revisions by 2 users not shown)
Line 8: Line 8:
 
}}
 
}}
 
|common_names=Muck sunflower
 
|common_names=Muck sunflower
 +
|special_status={{Treatment/ID/Special_status
 +
|code=E
 +
|label=Endemic
 +
}}
 
|basionyms=
 
|basionyms=
 
|synonyms=
 
|synonyms=
Line 33: Line 37:
 
-->{{#Taxon:
 
-->{{#Taxon:
 
name=Helianthus simulans
 
name=Helianthus simulans
|author=
 
 
|authority=E. Watson
 
|authority=E. Watson
 
|rank=species
 
|rank=species
Line 47: Line 50:
 
|publication title=Pap. Michigan Acad. Sci.
 
|publication title=Pap. Michigan Acad. Sci.
 
|publication year=1929
 
|publication year=1929
|special status=
+
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_395.xml
+
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_395.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 20:12, 5 November 2020

Perennials, 150–260 cm (rhizomatous). Stems erect, strigose or hirsute. Leaves basal and cauline; opposite or alternate; petioles 0.5–1 cm; blades (3-nerved distal to bases) linear-lanceolate to lanceolate, 9–22 cm × 0.7–4 cm, bases cuneate, margins entire or sub-entire (usually slightly revolute), abaxial faces hispidulous to tomentulose, gland-dotted. Heads 1–15. Peduncles 1–13 cm. Involucres ± hemispheric, 13–18 mm diam. Phyllaries 25–35 (loose), lance-linear to lanceolate, 6–17 × 1.5–3 mm, apices acuminate, abaxial faces glabrate to sparsely strigose, gland-dotted. Paleae 5.5–6.5 mm, 3- (or 5-)toothed (distally strigose, gland-dotted). Ray florets 12–23; laminae 16–40 mm (abaxial faces gland-dotted). Disc florets 100+; corollas 5–5.5 mm, lobes yellow or reddish; anthers dark brown or black, appendages dark. Cypselae 2.5–3 mm, glabrous; pappi of 2 (usually unequal) aristate scales 1.5–2.4 mm. 2n = 34.


Phenology: Flowering fall.
Habitat: Wet soils, ditches, roadsides
Elevation: 0–50+ m

Distribution

V21-395-distribution-map.gif

Ala., Fla., Ga., La., S.C.

Discussion

Helianthus simulans is similar to H. angustifolius, but much more robust with larger leaves, and to H. floridanus, but with longer and narrower leaves. Some workers have described H. simulans as having yellow disc corollas; this is variable within the species; individuals with reddish disc corolla lobes also occur. It is becoming popular as a garden plant, which may increase its range and may lead to an increase in the occurrence of hybrids with H. angustifolius and H. floridanus. It may be present in Arkansas and Texas.

Selected References

None.

Lower Taxa

None.