[1] Species in the genus are found in the high intertidal zone on New Zealand's coasts.

The thalli take a crustose form, but also contain upright, branching frond-like protrusions that reach 5–8 cm in height.

[6] Despite its unusual morphology, molecular systematics, along with its zoned tetrasporangia borne in conceptacles with a single opening, place it within the Hildenbrandiales.

[7] The algae are resistant to both U-V radiation and desiccation, allowing them to thrive in intertidal settings.

[8] Indeed, they can resume almost full photosynthesis just minutes after losing 95% of their tissue water.