Description:
Thin, membranous, brownish red fronds, to 200 mm long. Frond ± dichotomously divided, becoming irregular in upper parts. Frond iridescent, with undulate, often proliferous margins, sometimes with flattened hooks or with rhizoidal attachment processes. Very variable in growth from.

Habitat:
On rock, lower intertidal and subtidal, generally distributed, common.

Notes:
Gonimophyllum buffhamii, a minute parasite, occurs occasionally on subtidal plants of Cryptopleura on southern and western coasts (UK).

(In: Seaweed Site - ©Michael D. Guiry - http://seaweed.ucg.ie/descriptions/Cryram.html)