common whitlowgrass (draba verna). infructescence closeup

belarus flora brassicaceae cruciferae draba verna erophila black background botanical science botany calyx closeup common whitlowgrass early whitlow grass focus stacking fruit immature infructescence macro nailwort nature oblanceolate petal plants sepal shadflower silicula spring stigma vernal vestigial virtual herbarium subglabrous compressed