Invasive Species Weblog

I just learned about The Invasive Species Weblog at the 2007 Weblog Awards (Voting going on through Nov. 8th.) in the Best Science Blog category It is full of great information and links about invasive plants and animals.

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Viola conspersa (Dog Violet)

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Viola conspersa (Dog Violet) and related "Stemmed" blue violas from Eastern North America Our friend Kim Blaxland who is especially interested in Viola species e-mailed me today to ask me about Viola conspersa plants that we have seen. It seems there is some question whether this is just an upright form of another species and should be lumped with Viola labradorica*/V. adunca v. minor. Viola conspersa is a relatively upright plant with light blue flowers and leaves scattered up the stem. While the other species have their stems prostrate on the ground. She asked especially about what kind of rocks and what the soil pH would be. I think I usually have seen V. conspersa on soil derived from diabase (an intrusive igneous rock which usually give rise to circumneutral soils) here in Berks County, PA The pictures of Viola conspersa here are mine. The first two are from PA State Gamelands #52 (north of Churchtown, Lancaster Co. and south of Maple Grove in Berks Co.) They ...
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A Male Rufous Hummingbird visited our garden for a few days

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We had a beautiful male Rufous Hummingbird show up at our house last Wed. afternoon, July 29, 2020. He spent his time guarding our nectar feeders and keeping away all of the local and migrant ruby-throats. According to Scott Weidensaul this was the earliest "Fall" record for this species in PA. Several close friends got a chance to see him and we were hoping more people would get a chance spread out over time, but he was only here He was here through Friday evening. On July 31 he left after being banded.  We invited Sandy Lockerman and her husband to come and try to trap him and band him because I think that it is a good thing to try to understand the changing migration patterns of hummingbirds from western North America like this species. I hope that he may be re-trapped sometime and contribute to our knowledge base about these wonderful creatures. Sandy tells me that hummingbirds usually stay after banding, but this one took off and hasn't been back, Mike Slater  
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Summer 2014 Walks

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