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Silphium terebinthinaceum

 
Silphium terebinthinaceum
prairie dock
Common name prairie dock
Family asteraceae
Life cycle perennial
Flowers yellow?

I got seed for "silphium integrifolium" in a trade several years ago, and managed to raise a few seedlings. One of the plants is still alive, and comes back with impressively large, prominently veined leaves every year - but it has never bloomed. It is less drought-resistant than the other two silphium species in our garden, suffering from wilt in dry periods. The leaves don't resemble photos of the species I've found on the web, so I can't be sure of the identity. I hope that one year it will bloom and I'll have a better shot at IDing this.

This plant used to grow in our garden, but it slipped away...

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Last modified: April 18, 2006
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