Silphium integrifolium var. deamii L.M.Perry

PLANTS OF ILLINOIS, USA
Silphium integrifolium Michx.
var. deamii L.M.Perry
Det.: S.R. Hill, (ILLS) 2002 Asteraceae
ILLINOIS: DEKALB COUNTY: 41° 46’ 9.1” N.
Lat. 088° 44’ 48.4” W. Long. T. 38N, R. 4E, NE1/4
NE1/4 SW1/4 SECT. 14. Waterman. Between highway
right-of-way and active railroad (Chicago, Burlington
and Quincy) tracks. At ridge along utility line. 0.4 miles
east of junction of Illinois Route 23 and U.S. Route 30;
south side. Waterman 7.5 min. quadrangle. Elevation
750-800 feet. Dark clay-loam.
Mesic railroad prairie remnant, with Andropogon
gerardii, Sorghastrum nutans, Sporobolus juncea,
Aster laevigatus. Locally common multistemmed
perennial herb 0.5-1 meter tall, in fruit (dwarfed by
drought).
Steven R. Hill, with George Rose 35018
10 September 2002
03109271