bryophyte

Protonema (pl. protonemata) The young bryophyte gametophyte that develops following spore germination.

苔藓植中直接由孢子萌发形成结构称为原丝体。

Rhizoid A unicellular rootlike structure found in certain algae and in the gametophyte generation of the bryophytes and some ferns.

一些藻类、苔藓植和裸子植配子体中由单个细胞形成类似根结构。