*Lamium dissectum Withering. Common name: Cutleaf Dead-nettle. Phenology: Apr-May. Habitat: Lawns, fields, roadsides, disturbed areas. Distribution: Native of Eurasia.
Origin/Endemic status: Eurasia
Taxonomy Comments: This taxon is apparently an allopolyploid derivative (2n=36), resulting from hybridization of L. purpureum and another species, perhaps L. amplexicaule. Because of its allopolyploid status, this taxon should not be treated as a variety of L. purpureum. It is, however, possible that some individuals identified here may be sterile hybrids (2n=18).
Synonymy ⓘ: = Lamium hybridum Vill. — C, F, G, Mo3, NY, RAB, probably misapplied; = Lamium purpureum L. var. incisum (Willd.) Pers. — NcTx, NE, Mennema (1989). Basionym: Lamium dissectum With. 1796
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Heliophily ⓘ: 9
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