ashy sunflower
Family
AsteraceaeScientific Name
Helianthus mollisOther Common Names:
downy sunflower
hairy wild sunflower
Synonyms (former Scientific Names):
Helianthus mollis var. cordatus
Leaves
Leaves are
opposite, stiff, ascending, sessile and clasping with a
rough-hairy grayish-green surface to 12 cm long and 8 cm
wide. Leaf margins are entire to shallowly toothed with a
pointed tip. Inflorescence consists of single flower heads
positioned on terminal stems
Identifying Characteristics
Ashy sunflower is a native, warm-season; perennial forb
typically found growing in well-drained soils and full sun.
Stems are erect, solitary or clustered, densely pubescent
gray, growing from rhizomes to 1.2 m tall
Flower Seed Head
Flowers exhibit 15-30
yellow petals (sterile ray florets), 2.5-3 cm long
encompassing fertile yellow disk florets compressed to
2.5 cm in diameter. Each disk floret has a glabrous
corolla tube to 6 mm long, and five stamens with whitish
filaments and dark-brown anthers
Seed Fruit
Fruits are achenes that
are wedge shaped, dark-brown or black, and tipped by
two scales with pointed tips each enclosing a small single
seed 3-6 mm in length.
Where Found
Ashy sunflower is found throughout the eastern half the
United States, as far west as Nebraska and northward into
Canada. It has not been reported in Florida, which may
be the extent of its southern range
Life Cycle
perennial
Plant Type
Herb