Antheridium is the male reproductive organ of a Chara sp. It has an orange colour.

Oogonium is the female reproductive organ of a Chara sp. It has an orange colour.

A bed of Chara plants underwater.

The reproductive organs #gametangia of #chara sp. #Stonewort #algae #oogonium #antheridium #floron. Ouderkerkerplas / NL. August 2020
#citizenscientist

Good to see a few Stonewort (Chara) and a Curled Pondweed (Potamogeton crispus) in the waterbody, but have no idea what the algae-like growth was, coating the fringing reeds? #WildflowerID #Macrophytes #Stonewort #Wildflowerhour #Norfolk #Fenland 4/6