green field speedwell (veronica agrestis). flower closeup

plantaginaceae scrophulariaceae veronica agrestis androecium anther anthesis calyx capitate corolla filament flower gland glandular hair gynoecium hirsute pedicel petal pistil pollen sepal solitary stamen stigma style green field speedwell agrestis closeup virtual herbarium belarus flora: focus-stacked closeups wild cultivated plants including flowers leaves fruits intended illustrations botanical manuals