abc ...
Plants of thickets, roadsides and other open, disturbed areas.  Flowers September to October.  Not native..

Perennial.  Colony-forming from rhizomes.  Stems pubescent with rough, stiff hairs.  Typical height 5 to 6+ feet.

Overall inflorescences openFlower heads several per stem, borne on long peduncles.

Flower heads are radiateRay florets 10-20+, yellow, neuter.  Disc florets are bisexual and fertile; corollas yellowReceptacles are flat to slightly convex.  Involucral bracts are relatively short, the outer surfaces pubescent and sparsely gland dotted.

Basal leaves are absent at flowering.  Leaves are opposite or alternate, tapering to winged petioles (up to 8 cm in lower leaves), lanceolate to lance-ovate, with 3 prominent main veins, and lower surfaces that are pubescent and gland-dotted.

 

.

.

Similar species:  Heliopsis helianthoides, Silphium perfoliatum.

.

.

.

.

.


Images and text copyright  botphoto.com  and Arieh Tal, 1990 to 2016.  All rights reserved.  ( Terms of use )
.