big betony (betonica macrantha). verticillaster closeup

flower belarus flora black background closeup focus stacking macro nature plants botanical science botany virtual herbarium leaf stem petiole lamina anthesis indumentum blade corolla stamen pistil stigma filament style anther pollen androecium gynoecium lamiaceae labiatae verticillaster bilabiate calyx petal sepal pedicel hirsute venation cordate base betonica stachys tubular vein macrantha big betony quadrangular scalloped