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Penstemon serrulatus - Flickr - peganum (1)

Image of serrulate penstemon

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Description: Interesting - this batch of HPS/AGS mistakes have come out a different colour. I think it's still a member of the serrulatus group and it may be the slightly different treatment of the two batches (this lot being potted on this spring, the others last summer) might have steered the colour toward purple instead of blue. I've seen similar variability in P.True Blue - bluer in some sites, purpler in others. Date: 25 May 2011, 10:02. Source: Penstemon serrulatus?. Author: peganum from Small Dole, England.

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