Lamium bifidum subsp. balcanicum Velen.

Taxonomy: Fam. Lamiaceae// Genus: Lamium// Species: Lamium bifidum Cyrillo// Subspecies: Lamium bifidum subsp. balcanicum Velen.

Determined according to the botanical keys provided in Flora Europaea (Ball in Tutin et al., 1972).

Two subspecies of Lamium bifidum Cyrillo occur in the Osogovo region: Lamium bifidum Cirillo subsp. bifidum and Lamium bifidum subsp. balcanicum Velen. Distinction between subspecies:

Lamium bifidum Cirillo subsp. bifidum: corolla white; lower leaves cordate to almost truncate at base; leaves usually with a whitish patch along the main vein on the adaxial side.

Lamium bifidum subsp. balcanicum Velen: corolla purple, lower leaves rounded at base according to literature data (note: heart shaped leaves of the populations in Osogovo do occur); white patch along middle vein absent.

Habitat: Clearings and edges of forests.

Distribution: Lamium bifidum subsp. balcanicum Velen. is native to the Balkan Peninsula and Romania according to The Euro+Med PlantBase (source: World Checklist of Selected Plant Families (2010).

Lifeform: Annual, therophyte according to the Raunkiaer system.

Flowering period: Spring: APR, MAY.

Lamium bifidum subsp. balcanicum – habit. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – habit. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – habit. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowering stems. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowering stem with verticillasters. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowering stems with verticillasters. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – stems with cauline leaves. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – upper cauline leaf. Lake “Gradche”, 03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – upper cauline leaves. Lake “Gradche”, 03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower part of plant. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower part of plant. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – stem with lower cauline leaf. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower cauline leaves. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower cauline leaves. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – adaxial side of lower cauline leaf. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – adaxial side of lower cauline leaf. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – adaxial side of lower cauline leaf. Lake “Gradche”,  03.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – habit. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – habit. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – habit. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowering stem with verticilllasters. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowering stem with verticilllasters. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – veticillaster with spent flowers. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower leaves. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.
Lamium bifidum subsp. balcanicum – lower leaves. Near lake “Gradche”, on the east side,  16.04.2022. Photo by Trajche Dimitrovski.

References:

Lamium bifidum subsp. balcanicum. The Euro+Med PlantBase. Source: World Checklist of Selected Plant Families (2010), copyright © The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameId=7967&PTRefFk=8000000 [Accessed 03.04.2022].

Lamium L. Ball, P.W. in Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (1972). Flora Europaea. Volume 3: Diapensiaceae to Myoporaceae. Cambridge: Cambridge University Press, pp. 147-148.

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