Parthenium integrifolium var hispidum (Raf.) Mears

American Feverfew

Parthenium integrifolium var. hispidum plant

Family - Asteraceae

Stems - No info. yet.

Parthenium integrifolium var. hispidum stem

Leaves - No info. yet.

Parthenium integrifolium var. hispidum leaves

Inflorescence - No info. yet.

Parthenium integrifolium var. hispidum inflorescence

Involucre - No info. yet.

Ray flowers - No info. yet.

Disk flowers - No info. yet.

Parthenium integrifolium var. hispidum flowersFlowers close-up.

Flowering - May - October.

Habitat - Limestone glades, bald knobs, rocky prairies.

Origin - Native to U.S.

Other info. - This species can be found in the Ozark region of Missouri. It is a characteristic glade species.
Another species, P. integrifolium L., is more common in the state and is a larger plant. The two species are quite similar and, with further study, may prove to be little more than varieties rather than distinct species.

Photographs taken in the Ozark Scenic Riverways, Shannon County, MO., 5-28-03, and in Providence Prairie, Lawrence County, MO., 6-18-05.


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