Silphium laciniatum L. compass plant, rosin-weed
Global_ID_number38401
Description
flowers: june,july,august,raceme,
leaves: alternate,basal,simple,pinnate,pinnate,lanceolate,
fruits: achene,
Plant: not carnivorous,broadleaf,perennial,autotrophic,herbaceous,
Discussion: Family Asteraceae. Leaves: large, stiff, rough, and deeply divided basal leaves, pinnatifid, extending well up the stem . Flowers: flowers with yellow rays surrounding yellow centers on 3-8 foot stalks; inflorescence type- raceme, head; phyllaries coriace
Special_diagnostic_characters: Note: common name derived from the tendency of basal leaves, when growing in full sun, to hold their edges so they point North-South. Thus the leaf surfaces face the sun in the morning and afternoon.