Murrill, W.A. 1903: The Polyporaceae of North America - IV. The genus Elfvingia. Bulletin of the Torrey Botanical Club 30: 296-301.
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| Murrill, W.A. 1903: The Polyporaceae of North America - IV. The genus Elfvingia. Bulletin of the Torrey Botanical Club 30: 296-301. |