Sonchus arvensis subsp. uliginosus (M.Bieb.) Nyman

The New York Botanical Garden
Sonchus arvensis L. subsp. uliginosus (M. Bieb.) Nyman
M
det.M. Nee, 2012
PLANTS OF ILLINOIS, USA
Sonchus uliginosus M. Bieb.
det.: S.R. Hill Dec. 2000 [= S. arvensis L. var. glabrescens Aste
ILLINOIS: McHENRY COUNTY 42° 16' 16.0" N; 88° 17'
13.2" W. McHenry EL 7.5 min. quad., T.44N., R.8E., E/2
SE/4, SE/4, SW/4 sec. 22. W side IL Rt. 31 (FAU 336),
south of Terra Cotta Industries headquarters buildings,
north of residential area. Elev. ca. 240 m. Dark wet silts
and disturbed gravelly roadfill.
Degraded floodplain forest and weedy roadside
right-of-way. Occasional, local herb at roadside, to 1 m
tall, flowers golden-yellow; milky sap present; in
disturbed roadfill soil.
Steven R. Hill 32528
22 June 2000
03070955