The apical cell and basal cell act as the ancestor cells of frond and rhizoid.

两个细胞分别成为和祖细胞。

Stem with much reduced leaf blades that function as rhizoids below ground, with or without tubers or rhizomes.

在地下面，起作用茎非常退化，有或没有块茎或状茎。

The effects of different concentrations of arsenic on spore germination and rhizoid and prothallium growth of Pteris vittata under aseptic condition were studied.

研究无菌条件下不同浓度砷对蜈蚣草孢子萌发、和原体生长发育影响。