Sinonim indusium

English Thesaurus

1. a membrane enclosing and protecting the developing spores especially that covering the sori of a fern (noun.plant)

hypernym	:	cover, covering, natural covering,
definition	:	a natural object that covers or envelops (noun.object)

part meronym	:	sorus,
definition	:	cluster of sporangia usually on underside of a fern frond (noun.plant)