09 October 2008.
Missouri, United States
Locality: Along County Road J, near Amidon Memorial Conservation Area, Farmington, NW 1/4 of NW 1/4 of Section 8, T33N, R8E, Higdon Quad, Madison County.
Coordinates: 37.5700, -90.1875
(Map it)
Elevation: 256m.
Georeference protocol: Lat/lon determined by GPS
Number of plants sampled: 12
Associated species: Cassia fasciculata, Juniperus virginiana, Quercus velutina, and Silphium terebinthinaceum var. terebinthinaceum.
Comment: Large variation in seed maturity amongst specimens.
Collector(s):