XCNC/2006_08_07   Kirt Prairie 2006/09/27   SCHULENBERG/2006_09_29
SMOOTH BLUE ASTER
Aster laevis
HUNGARIAN BROME
Bromus inermis
PRAIRIE COREOPSIS
Coreopsis palmata
GARDEN SUNFLOWER
Helianthus annuus
SWITCH GRASS
Panicum virgatum
PENNSYLVANIA KNOTWEED inflorescence
Polygonum pensylvanicum
PENNSYLVANIA KNOTWEED
Polygonum pensylvanicum
ROSINWEED cross section
Silphium integrifolium

Root Mirrors: peterchen, COD
©
Copyleft Peter Chen