Porphyra and seaweed are inclusive, and seaweed is laver; But laver is not all seaweed.

Porphyra (pyro pia/ Porphyra? Species) belongs to Rhodophyta, Proanthophyta, Rhodophyta, Rhodophyceae, and is an algae growing in intertidal zone.

brief introduction

(1) In the whole laver group, the leaves have smooth edges, and the shape of the marginal cells is the same as that of other vegetative cells.

(2) In Porphyra yezoensis group, there are obvious spikes at the edge of leaves, which are composed of 1 or several cells.

(3) In the marginal group of Porphyra, the leaf is composed of several rows of degenerated cells.