Helianthus radula

Family:ASTERACEAE
Species:Helianthus radula (Pursh) Torrey & A. Gray
Common Name:Rayless Sunflower; Pineland Sunflower; Roundleaf Sunflower
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:HERA
Plant Notes:Rayless Sunflower is a native herbaceous perennial in the Sunflower family (Asteraceae). It is native to the southern third of Alabama. Rayless Sunflower occurs in sandy Longleaf pine woods, in wet flatwoods, on roadsides, and in forest clearings. It is a perennial with a short, erect rootstock, sometimes elongating and becoming rhizome- or stolon-like. Leaves are primarily basal. The leaves are opposite, short petiolate, obovate to orbicular in outline, thick and rough in texture, pubescent, not gland dotted, and with entire to serrulate margins. The cauline leaves are narrow and much reduced. Flowers are produced in heads. The heads are solitary on long peduncles. The phyllaries are often dark purple-black. The heads have 0-2 yellow ray flowers and 100-150 reddish-purple disc flowers. The fruit is an achene. Rayless Sunflower is available from some wildflower nurseries or it can be grown from seed. It prefers a site with full sun and will adapt to a variety of soil and moisture conditions. Although not as showy as other members of the genus it still attracts a wide range of butterflies and other pollinators.—A. Diamond
Taxonomic Notes:**
Status:Native, FACW- (NWI)
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 radula (Pursh) Torrey & A. Gray - Rayless Sunflower; Pineland Sunflower; Roundleaf Sunflower

Citation

Citation HELIANTHUS RADULA (Pursh) Torrey & A. Gray, Fl. N. Amer. 2: 321. 1842.
Basionym: Rudbeckia radula Pursh 1814.
Type: GEORGIA: Without data, Bartram s.n. (holotype: BM).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Echinomeria apetala Echinomeria apetala (Torrey ex Nuttall) Nuttall, Trans. Amer. Philos. Soc., ser. 2. 7: 356. 1841.Rudbeckia apetala Torrey ex Nuttall 1834 
Helianthus atrorubens subsp. radula Helianthus atrorubens Linnaeus, subsp. radula (Pursh) Anashchenko, Bot. Zhurn. (Moscow & Leningrad) 59: 1477. 1974.Rudbeckia radula Pursh 1814. 
Neactelis strigosa Neactelis strigosa Rafinesque, New Fl. 4: 69. 1838 ("1836"). FLORIDA
Rudbeckia apetala Rudbeckia apetala Torrey ex Nuttall, J. Acad. Nat. Sci. Philadelphia 7: 77. 1834. ALABAMA: Without data, Gates s.n. (holotype: PH).
Rudbeckia nudiflora Rudbeckia nudiflora Bertoloni, Novi Comment. Acad. Sci. Bononiensis 9: 221, t. 14. 1851.  
Rudbeckia radula Rudbeckia radula Pursh, Fl. Amer. Sept. 575. 1814. GEORGIA: Without data, Bartram s.n. (holotype: BM).

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: Baldwin, Conecuh, Covington, Crenshaw, Escambia, Geneva, Mobile, Monroe

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UWAL0032766 Mobile 02 Oct 2015 Keener, Brian R.
9264
UWAL
Helianthus radula (Pursh) Torrey & Gray
TROY000020585 Escambia 19 Sep 2005 Robert Kral
96888
TROY
Helianthus radula (Pursh) Torrey & Gray
AMAL00007252 Geneva 17 Sep 2001 R. Kral
91893
AMAL
Helianthus radula (Pursh) Torr. & Gray
TROY000002292 Geneva 08 Oct 2006 Alvin R. Diamond
17042
TROY
Helianthus radula (Pursh) Torrey & Gray
TROY000041575 Covington 26 Sep 2014 Alvin R. Diamond
25551
TROY
Helianthus radula (Pursh) Torrey & A. Gray
UWAL0043171 Baldwin 29 Sep 2002 Larsen, H.S.
1119
UWAL
Helianthus radula (Pursh) Torr. & A. Gray
USAM000002376 Mobile 26 Oct 1967 Michel G. Lelong
3888
USAM
Helianthus radula (Pursh) Torrey & A. Gray
TROY000002291 Covington 03 Oct 2001 Michael Woods
8907
TROY
Helianthus radula (Pursh) Torrey & Gray
AMAL00010991 Conecuh 07 Oct 2004 A. R. Diamond
14780
AMAL
Helianthus radula (Pursh) Torr. & Gray
TROY000002290 Conecuh 07 Oct 2004 Alvin R. Diamond
14780
TROY
Helianthus radula (Pursh) Torrey & Gray
UWAL0019011 Geneva 15 Aug 1987 Kral, R.
74300
UWAL
Helianthus radula (Pursh) T&G
AUA000004563 Covington 20 SEP 1979 CRAWFORD, LLOYD C.
AUA
HELIANTHUS RADULA (PURSH) TORR. & GRAY
JSU114637 Mobile 27 Oct 1993 D. D. Spaulding
4609
JSU
Helianthus radula (Pursh) Torrey & Gray
AUA000004564 Crenshaw 25 SEP 1988 DIAMOND, JR., ALVIN R.
5557
AUA
HELIANTHUS RADULA (PURSH) TORR. & GRAY
AUA000004561 Conecuh 7 OCT 2004 DIAMOND, JR., ALVIN R.
14780
AUA
HELIANTHUS RADULA (PURSH) TORR. & GRAY
UNA00063619 Conecuh 7 Oct 2004 Alvin R. Diamond
14780
UNA
Helianthus radula (Pursh) Torr. & Gray
AUA000004562 Covington 3 OCT 1987 DIAMOND, JR., ALVIN R.
3672
AUA
HELIANTHUS RADULA (PURSH) TORR. & GRAY
UWAL0006291 Monroe 23 Sep 1982 Kral, R.
69603
UWAL
Helianthus radula (Pursh) T. & G.
UWAL0016342 Covington 26 Sep 2014 Diamond, Alvin R.
25551
UWAL
Helianthus radula (Pursh) Torrey & A. Gray
UNA00047630 Mobile 16 Oct 1966 Rebecca Deramus
D1021
UNA
Helianthus radula (Pursh) Torr. & Gray
AMAL00017426 Baldwin 11 Oct 2007 T. Wayne Barger
Perd-106
AMAL
Helianthus radula (Pursh) Torr. & Gray
TROY000028236 Escambia 16 Oct 2008 Alvin R. Diamond
20305
TROY
Helianthus radula (Pursh) Torrey & Gray
SAMF0005479 Mobile 29 Sep 1990 Davenport, L. J.
2727
SAMF
Helianthus radula (Pursh) Torrey & A. Gray
UNA00056219 Covington 19 Sep 1998 John R. MacDonald
12038
UNA
Helianthus radula (Pursh) Torr. & Gray
UWAL0000726 Escambia 19 Sep 2005 Kral, R.
96888
UWAL
Helianthus radula (Pursh) T. & G.
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