Color: Brown (Yellowish, Reddish, Black when Dry)
Shape: Irregular Blade
Size: Up to 6”
Range: Alaska to Mexico
Description: Short, upright irregular blades that are rubbery and covered with small bumps. The ruffly blades taper to a small stipe and holdfast.
Edibility: Used to make carrageenan. Can be boiled to make a gel-like thickener at home as well.
Distinctive characteristics: Forms a black tar-like “crust” on rocks during one phase of its lifecycle.
Phylum: Rhodophyta (Red Algae)
Previous names: Gigartina papillata, Gigartina sitchensis, Petrocelis franciscana, Petrocelis middendorffii, Gigartina mamillosa, Gigartina dichomta, Gigartina cristata
Similar species: Chondracanthus exasperatus (Turkish Towel)