Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Purpledisc Sunflower at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA (11/30/12):
Helianthus atrorubens
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus atrorubens
FAMILY
Asteraceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-005:
Helianthus atrorubens
FAMILY
Asteraceae
COMMON NAME:
Purpledisc Sunflower, Hairy Wood Sunflower, Appalachian Sunflower
Click or hover over the thumbnails to see larger pictures.
JK Marlow jkm0408j_31
August Oconee County SC
Flowers have reddish disk and are at the end of long naked branches, per Wildflowers of the Southern Mountains.
JK Marlow jkm0508g_26
August Greenville County SC
Leaves basally disposed, the few leaves of the lower stem reduced upward, per Weakley's Flora (2012).
JK Marlow jkm080914_014
September Greenville County SC
Ashmore Heritage Preserve
Phyllaries broadly ovate to oblong, apices obtuse to acute, occ. mucronate, per Flora of North America.
COMPARE
involucral bracts of Sunflowers
JK Marlow jkm120908_369b
September Greenville County SC
Helianthus disc flowers have styles that are bifurcate [two-forked], per www.missouriplants.com
JK Marlow jkm180905_4570
September Greenville County SC
The disc florets mature from the outside in [centripetally].
JK Marlow jkm180906_4605
September Greenville County SC
This is the same flower head, one day later.
Richard and Teresa Ware rtw_h_atrorubens_2b
September
Disk flowers red or purple (at least in part), per Weakley's Flora.
JK Marlow s040901_b
September Greenville County SC
Roadside
Leaves rhombic to triangular-ovate, pubescent and scabrous on both sides, per Vascular Flora of the Carolinas.
JK Marlow s040901_c
September Greenville County SC
Roadside
Petiole often > 1/3 as long as the blade, broadly winged toward the blade, per Weakley's Flora.