Overview

Distribution

Global Range: Nearly throughout central Florida (Wunderlin 1982); reported from south Florida and (historically) from Thomas County, Georgia.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Morphology

Description

Annuals, 100(–200+) cm. Stems erect, glabrous or glabrate (glaucous). Leaves mostly cauline; mostly opposite; petioles 0.5–1.2 cm; blades (often 3-nerved distal to bases) lanceolate, 6–11 × 0.7–1.9 cm, bases cuneate, margins ± serrate, faces scabrous, not gland-dotted . Heads 1–15. Peduncles 2–8 cm. Involucres hemispheric, 10–15 mm diam. Phyllaries 15–25, lanceolate, 8–9 × 1.5–2 mm, (margins ciliate) apices acuminate, abaxial faces glabrate. Paleae 5–7, subentire to ± 3-toothed (apices purplish, glabrous). Ray florets ca. 12; laminae 12–25 mm. Disc florets 50+; corollas 3.5–4 mm, lobes reddish purple; anthers dark, appendages dark. Cypselae 2.5–3.2 mm, glabrous (± tuberculate); pappi of 2 aristate scales 1.5–2 mm. 2n = 34.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Type Information

Holotype for Helianthus agrestis Pollard
Catalog Number: US 370176
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. H. Curtiss
Year Collected: 1900
Locality: Between Lake Beresford and St. Johns River., Volusia, Florida, United States, North America
  • Holotype: Pollard, C. L. 1900. Proc. Biol. Soc. Wash. 13: 184.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Botany

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Holotype for Helianthus agrestis Pollard
Catalog Number: US 370175
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): A. H. Curtiss
Year Collected: 1900
Locality: Between Lake Beresford and the St. Johns River., Volusia, Florida, United States, North America
  • Holotype: Pollard, C. L. 1900. Proc. Biol. Soc. Wash. 13: 184.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Botany

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Comments: Mucky, wet soil. Pinelands, roadsides, disturbed sites. Open marshy flats, marshy shores, wet flatwoods clearings, sometimes in extensive dense stands.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 81 to >300

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Barcode data: Helianthus agrestis

The following is a representative barcode sequence, the centroid of all available sequences for this species.


Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Statistics of barcoding coverage: Helianthus agrestis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: The current known range is confined to Florida although historically the species was also found in south Georgia. Described as being frequent in central Florida by Wunderlin (1982).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Notes

Comments

Distinctive among species of Helianthus with an annual habit in having a combination of reddish disc corolla lobes and yellow style branches, H. agrestis is also characterized by its glabrate stems and phyllaries and by relatively long hairs on the petioles and basal margins of the leaves.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!