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Biodiversity Blog


The Rough-stem Rosinweed - Silphium integrifolium var. asperrimum

This rather tall sunflower is found primarily along streams on the Edwards Plateau and in north-central Texas. Although the leaves are sandpapery to the touch, they are relished by deer and other browsing wildlife.

Flowering months: July and August.

Photo: Dexter image collection, Plant Resources Center.
Wildflowers of Texas project: http://www.lib.utexas.edu/exhibits/wildflowers/index.html

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