Plants Profile for Atrichum undulatum (undulate atrichum moss).
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Atrichum undulatum is what i had always called this plant. This is what is was in Crum's Mosses of Eastern North America. He had split it into several varieties: var altecristatum, var undulatum, var attenuatum, and var oerstedianum. i never bothered with these and just called the plant Atrichum undulatum.When i got my new copy of Flora of North America, i looked further into this species.
Atrichum undulatum (Hedw.)P.-Beauv. Photo taken by Li Zhang. USA.Southern Illinois, May 2004.
Atrichum is a very common moss of soil banks and other areas of exposed mineral soil in most of the moist, low to medium elevation areas of California. It is absolutely unmistakable even under the hand-lens. Its leaves are undulate even when moist; the strongly developed limbidium has prominent marginal teeth, mostly geminate; and the low photosynthetic lamellae, in a hand-lens view, appear as.
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Atrichum oerstedianum, which has been confused with A. undulatum, is added to the moss flora of the United States and Canada. The distribution of A. crispum is clarified and a detailed study of.
Atrichum undulatum is a species of plants with 934 observations.