Helianthus resinosus

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:ASTERACEAE
Species:Helianthus resinosus Small
Common Name:Resin Dot Sunflower; Resinous Sunflower
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:HERES
Plant Notes:Resin Dot Sunflower is a native herbaceous perennial in the Sunflower family (Asteraceae). It can be found throughout much of Alabama. Resin Dot Sunflower occurs in pine woodlands, in mixed pine-hardwood forests, on roadside banks, along the edge of forests, and in clear cuts. It is a perennial with a short rhizome. One-several stems up to 8 feet in height are produced from each root crown. The stems are usually purplish in color, erect, unbranched below the inflorescence, and pubescent. The leaves are mostly cauline, petiolate, lanceolate to ovate in outline, with entire or serrate margins. The leaves are pubescent and glandular dotted on the lower surface. The stems and upper leaf surfaces are scabrous. Flowers are produced in heads. Each stem produces 1-5 heads. The phyllaries surpass the discs and are reflexed and resin dotted. Each head has 10-20 yellow ray flowers and 90+ yellow disc flowers. The fruit is an achene. Resin Dot Sunflower is sometimes available in nurseries. It may be sold under the misapplied name Helianthus tomentosus Michaux. Resin Dot Sunflower prefers a well-draining soil in full sun. Plants grown in rich soils may need to be staked to keep them upright. Because of its large size, Resin Dot Sunflower can be planted at the back of beds, along fences, or at the edge of a wood line. I have seen them planted in beds around utility poles. The seed heads can be left through the winter to provide food for birds and small mammals.--A. Diamond
Taxonomic Notes:**
Status:Native
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Helianthus
Species Helianthus resinosus Small - Resin Dot Sunflower; Resinous Sunflower

Citation

Citation Helianthus resinosus Small, Fl. S.E. U.S. 1269, 1340. 1903.
Basionym: **
Type: USA: FLORIDA: Gadsden Co.: River Junction, 5 Sep 1895, Nash 2581 (holotype: NY).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Helianthus tomentosus    

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Autauga, Barbour, Bibb, Bullock, Butler, Calhoun, Cherokee, Chilton, Choctaw, Clarke, Clay, Coffee, Colbert, Conecuh, Coosa, Crenshaw, Cullman, Dale, Etowah, Greene, Hale, Henry, Houston, Lee, Marengo, Monroe, Montgomery, Pickens, Pike, Randolph, Russell, St. Clair, Sumter, Tallapoosa, Tuscaloosa, Walker, Washington

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AMAL, AUA, JSU, SAMF, TROY, UNA, UWAL

Range of years during which specimens were collected: 1885 - 2019

Barcode / Accession No.
County
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
AUA000004566 Autauga 18 Aug 1982 GUNN, SCOTT C.
1083		 AUA
HELIANTHUS RESINOSUS SMALL
TROY000044588 Autauga 13 Oct 2016 Parker, Matthew R.
206		 TROY
Helianthus resinosus Small
UWAL0046080 Autauga 20 Jul 2017 Parker, Matthew R.
1002		 UWAL
Helianthus resinosus Small
TROY000048660 Autauga 20 Jul 2017 Parker, Matthew R.
1002		 TROY
Helianthus resinosus Small
TROY000048824 Autauga 19 Oct 2017 Parker, Matthew R.
1382		 TROY
Helianthus resinosus Small
UWAL0046365 Autauga 19 Oct 2017 Parker, Matthew R.
1382		 UWAL
Helianthus resinosus Small
TROY000049563 Autauga 24 Aug 2018 Parker, Matthew R.
1769		 TROY
Helianthus resinosus Small
UWAL0050299 Autauga 24 Jul 2019 Diamond, Alvin R.
29023		 UWAL
Helianthus resinosus Small
TROY000033545 Barbour 03 Sep 2011 Dykes, Bailee
73		 TROY
Helianthus resinosus Small
TROY000033547 Barbour 24 Sep 2011 Dykes, Bailee
148		 TROY
Helianthus resinosus Small
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