unbranched bur-reed (sparganium emersum). inflorescence closeup

inflorescence male flower belarus flora black background closeup focus stacking macro nature plants botanical science botany female virtual herbarium peduncle leaf pistillate capitulum lamina anthesis blade head stamen pistil stigma filament style anther pollen androecium gynoecium bract ovary pedicel staminate stalk sheath venation vein european burreed sparganiaceae sparganium emersum simplex typhaceae simple unbranched