Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus longifolius
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Longleaf Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus longifolius
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Helianthus longifolius
INCLUDING & INCLUDED WITHIN (MISIDENTIFICATION) VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-008:
Helianthus longifolius FAMILY Asteraceae
COMMON NAME:
Longleaf Sunflower
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm110416_753
April Etowah County AL
)
Richard and Teresa Ware rtw_h_longifolius
September
Leaves 10-20x as long as wide, basally disposed, glabrous, per Weakley's Flora.
)
Richard and Teresa Ware rtw_h_longifolius_4b
September
8-13 ray florets. Disc florets' lobes yellow; anthers dark, appendages dark, per Flora of North America.
)
Richard and Teresa Ware rtw_h_longifolius_lrc
September
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus longifolius
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus longifolius
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Helianthus longifolius
INCLUDING & INCLUDED WITHIN (MISIDENTIFICATION)
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-008:
Helianthus longifolius
FAMILY
Asteraceae
3445
Forb
Perennial
Habitat: Sandstone and granite glades and woodlands, loamy to xeric longleaf pine sandhills, per Weakley's Flora
Native to Georgia
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Basal & opposite (reduced upward)
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
FRUIT:
Summer/Fall
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p122
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p087
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".