Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus annuus
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Common Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus annuus
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Helianthus annuus
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-022:
Helianthus annuus FAMILY Asteraceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus annuus
COMMON NAME:
Common Sunflower, Mirasol
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hean3_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_hean3_014_lvd
)
USDA / Selected Weeds of the US. 1970 swus_page_419
)
JK Marlow jkm130614_249
June Spartanburg County SC
Leaves triangular-ovate, acute to acuminate, serrate, base truncate to cordate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm100704_005
July Greenville County SC
This is the common cultivated sunflower grown for its flowers, seeds, and oil, per Weakley's Flora.
)
JK Marlow jkm100704_007b
July Greenville County SC
Involucral body 2-10cm+ broad; bracts ovate abruptly long-acuminate, spreading, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
COMPARE
involucral bracts of Sunflowers
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JK Marlow jkm100704_007c
July Greenville County SC
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Alan S. Weakley asw_10232214919371740
August
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Alan S. Weakley asw_10232214921251787
August
)
Alan S. Weakley asw_10232214967212936
August
)
JK Marlow jkm210806_2453
August Spartanburg County SC
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus annuus
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus annuus
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Helianthus annuus
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-022:
Helianthus annuus
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus annuus
3388
Forb
Annual
Habitat: Disturbed areas, often cultivated in gardens, sometimes cultivated in fields, per Weakley's Flora
Native: to the Plains states
Uncommon
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Lower opposite, upper alternate
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Reddish
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
FRUIT:
Summer/Fall
Striped
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p284
- Wildflowers of Tennessee (Carman, 2005) p301
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p350
- Wildflowers of the Southern Mountains (Smith, 1998) p191
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