Zander, R.H. 1978: New combinations in Didymodon (Musci) and a key to the taxa of North America north of Mexico. Phytologia 41: 11–32.
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| Zander, R.H. 1978: New combinations in Didymodon (Musci) and a key to the taxa of North America north of Mexico. Phytologia 41: 11–32. |