Helianthus giganteus L.

02891314
Asteraceae Helianthus giganteus L.
det. M. Nee, 2008
Wisconsin, Richland Co., 3 miles SE of Richland Center.
T 10 N; R 1 E; NWtf NE% sect. 35.
43°18’17”N, 90°20’26”W. alt. 210 m.
Showy, to 2.2 m. tall, some plants shorter, in loose colonies.
With Heracleum lanatum, Pteridium aquilinum, Corylus
americana, Phalaris arundinacea, Vernonia fasciculata in
lowland between old railroad (now bike trail) and cornfield,
but not generally flooded by Pine River from adjacent
floodplain. Roots horizontal, somewhat thickened. Rays
bright yellow; disc slightly darker yellow-orange.
Coll.: M. Nee 55944	26 Aug. 2008
The New York Botanical Garden
Plants of U.S. A.
02891314