Big-leaf Compass Plant

Silphium laciniatum

no photo — written note
photo: Wikimedia Commons
Plants

A two-metre prairie giant with deeply cut basal leaves aligned north to south.

Field facts
HabitatTallgrass prairie remnants
RangeNorthwestern and central Indiana
When to lookJuly to August
StatusUncommon; remnant-dependent (Indiana DNR / IUCN Red List)
Look-alikesPrairie Dock, Cup Plant

Field note: Leaves stand edge-on to midday sun, so they really do point north-south.

Lesson
Watching responsibly

Remnant prairie is irreplaceable; stay on mowed paths.

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