Betula alnus Linnaeus var. incana Linnaeus , Species Plantarum 2 : 983. 1753 Chapter 7: Linnaean Plant Names and their Types (part B) Jarvis, Charlie 5TWTV (L.) Moench Moench Linnaeus 1753 Magnoliopsida Betulaceae Alnus Plantae Fagales Tracheophyta species incana      Betula alnusLinnaeus var. incanaLinnaeus,  Species Plantarum2: 983. 1753.  "Habitat in Europa." RCN: 7125.    Lectotype(Jonsell & Jarvis in Nordic J. Bot.14: 153. 1994): Herb. Burser XXIII: 9 ( UPS). 2612079366 UPS 9 lectotype