Ammannia auriculata Willd.

PLANTS OF ILLINOIS, USA
Ammannia auriculata Willd.
Lythraceae
Det.: S. R. Hill, (ILLS) 2001
ALEXANDER COUNTY 37° 19’ 55.0” N. Lat. 89°
24’ 42.2’” W. Long. T. 14S, R. 3W, SE1/4, SE1/4,
NW1/4, NW1/4, Sect. 2 Illinois Route 3 (FAP 312),
McClure, west side, opposite VFW post at slough
(intermittent stream), 0.2 mile south of Union County
line. Mississippi River Floodplain. McClure 7.5 minute
U.S.G.S. quadrangle. Elevation about 340 feet.
Disturbed wet silty sand; alluvial deposits.
Secondary floodplain forest, degraded, bordering
agricultural land, dominated by Acer saccharinum,
Campsis radicans, Forestiera acuminata, Salix nigra,
with Leptochloa panicoides, Leucospora, Rotala,
Echinodorus, Polygonum spp. Flowers magenta
purple; locally common erect herb, generally
unbranched, flowers with peduncle, margin of drainage
channel.
Steven R. Hill 34245
Jason A. Koontz
28 August 2001
03788420