Phaeoceros laevis

It is commonly found in areas where moisture is plentiful, such as moist soils in fields, the banks of streams and rivers or inundated beneath the surface of the rivers.

[2] It grows to a maximum height of about 5 millimetres and the plants are monoecious; the sex organs are visible on the dorsal surface.

It is of dark green and somewhat lustrous color, devoid of intercellular spaces.

The slender green capsules, when produced in large numbers, resemble grass tufts.

[5] The centrosomes of the species, much like Marchantia polymorpha, are composed of two centrioles apposed end-to end, which are connected by a continuation of their cartwheel structures.

Phaeoceros laevis (D). Illustration from the 1911 Encyclopædia Britannica