Helianthus radula

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Helianthus radula
Helianthus radula.jpg
Photo was taken by Gil Nelson
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida – Dicotyledons
Order: Asterales
Family: Asteraceae ⁄ Compositae
Genus: Helianthus
Species: H. radula
Binomial name
Helianthus radula
(Pursh) Torr. & A. Gray
HELI RADU dist.jpg
Natural range of Helianthus radula from USDA NRCS Plants Database.

Description

Common Name: rayless sunflower

Helianthus radula is a perennial herbaceous species.

Distribution

Ecology

Habitat

It can live in loblolly or slash pine communities.[1] Censused on mid-slope at the Wade Tract, GA.[2] “The fire-maintained forest structure is savanna-like with an open canopy of P. palustris and P. elliotii Engelm. (slash pine), little to no subcanopy, and diverse ground cover dominated by grasses…and forbs…”[3] Commonly found species in the forests of camp Shelby Training Site within Pine Woods subprovince of the Gulf Coastal Plain physiographic region of Mississippi.[1]

Phenology

Flowering and fruiting has been observed in August through November (FSU Herbarium).

Seed dispersal

Seed bank and germination

Fire ecology

This species has been found in habitat that is burned frequently (FSU Herbarium). For example, the Wade Tract has been burned biennially.[2]

Pollination

Use by animals

Diseases and parasites

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014.

Collectors: Loran C. Anderson, Roomie Wilson, Delzie Demaree, C. Ritchie Bell, F. H. Sargent, Samuel B. Jones, John W. Thieret, Almut G. Jones, A. F. Clewell, R. K. Godfrey, Bruce Hansen, JoAnn Hansen, Robert L. Lazor, R. Kral, J. P. Gillespie, R. E. Perdue, Jr., Paul L. Redfearn, Jr., Kurt E. Blum, D. B. Ward, S. S. Ward, John B. Nelson, G. R. Knight, Cecil R Slaughter, Nancy E. Jordan, R. A. Norris, and R. Komarek.

States and Counties: Florida: Bay, Calhoun, Citrus, Flagler, Franklin, Gadsden, Holmes, Jefferson, Lake, Leon, Levy, Liberty, Madison, Nassau, Okaloosa, Orange, Osceola, Putnam, St Johns, Taylor, Wakulla, and Walton. Georgia: Thomas. Louisiana: Tangipahoa and Washington. Mississippi: Jackson, Lamar, and Pearl River. South Carolina: Colleton.

  1. 1.0 1.1 Yager, L. Y., M. G. Hinderliter, et al. (2007). "Gopher tortoise response to habitat management by prescribed burning." The Journal of Wildlife Management 71: 428-434.
  2. 2.0 2.1 Gilliam, F. S., W. J. Platt, et al. (2006). "Natural disturbances and the physiognomy of pine savannas: A phenomenological model." Applied Vegetation Science 9: 83-96.
  3. Kirkman, L. K., M. B. Drew, et al. (1998). "Effects of experimental fire regimes on the population dynamics of Schwalbea americana L." Plant Ecology 137: 115-137.