May 17, 2015
Currently in bloom: the Purple Beard Tongue and Prairie Beard Tongue, (Penstemon cobaea and Penstemon tubaeflorus.) These flowers have four fertile stamens and one sterile stamen. They are commonly referred to as “Beard Tongue” because of the one sterile stamen having a tuft of small hairs. These are clump-forming plants with spikes of flowers that...
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