Biology:Helianthus agrestis
| Helianthus agrestis | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Helianthus |
| Species: | H. agrestis
|
| Binomial name | |
| Helianthus agrestis Pollard
| |
Helianthus agrestis is a species of sunflower known by the common name southeastern sunflower. It is one of 150 sunflower species in the genus Helianthus.[1] It is found only in the states of Florida and Georgia in the southeastern United States.[2][3] This plant is native to Florida.[4] It grows in wet soil in marshes and pine flatwoods at elevations less than 50 meters (170 feet) elevation.[5][6]
Description
Helianthus agrestis plants can grow up to one meter tall. Helianthus agrestis is a flowering plant that has bright orange-yellow rays.[6] Each plant can have about 10-15 rays and up to 50 disc florets.[5] The bright colors on this plant make it attractive to many pollinators.[7] The leaves of this plant are oval shaped and have a petiolate attachment and alternate on the stem.[5][6] The stem is branched and hairy with some pubescence.[6]
Growth
Helianthus agrestis are an annual species that flower in the late summer to early fall months.[5]Helianthus species require a lot of sun to grow. For optimal growth, the plant should get at least 6 hours of full sun a day.[1] Sunflower seeds also contain a toxic substance that will kill all nearby grass.[8]
Habitat
Helianthus agrestis is native to Florida. Outside of Florida, it is also only found in Thomasville, Georgia.[9]
Significance
Helianthus agrestis is a popular plant amongst humans for cosmetic and decorative purposes. In wildlife, birds and small mammals consume Helianthus agrestis seeds.[4] It is primarily pollinated by bees.[4]
References
- ↑ 1.0 1.1 "Helianthus (Sunflower) | North Carolina Extension Gardener Plant Toolbox". https://plants.ces.ncsu.edu/plants/helianthus/.
- ↑ Biota of North America Program 2014 county distribution map
- ↑ Atlas of Florida Vascular Plants
- ↑ 4.0 4.1 4.2 "Florida Native Plant Society (FNPS)". https://www.fnps.org/plant/helianthus-agrestis.
- ↑ 5.0 5.1 5.2 5.3 Flora of North America, Helianthus agrestis Pollard, 1900. Southeastern sunflower
- ↑ 6.0 6.1 6.2 6.3 Pollard, Charles Louis 1900. Proceedings of the Biological Society of Washington 13(38): 184
- ↑ Mason, Chase M.; Patel, Hiral S.; Davis, Kaleigh E.; Donovan, Lisa A. (2017-07-18). "Beyond pollinators: evolution of floral architecture with environment across the wild sunflowers (Helianthus, Asteraceae)". Plant Ecology and Evolution 150 (2): 139–150. doi:10.5091/plecevo.2017.1321. ISSN 2032-3913. http://dx.doi.org/10.5091/plecevo.2017.1321.
- ↑ WoFP (2017-12-26). "Helianthus agrestis (Southeastern Sunflower)" (in en-US). https://worldoffloweringplants.com/helianthus-agrestis-southeastern-sunflower/.
- ↑ "Helianthus agrestis - Species Details". http://florida.plantatlas.usf.edu/plant.aspx?id=2550.
Wikidata ☰ Q15488027 entry
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