photograph of a fern fiddlehead

ancient archaeopteris botanical branching close complex crozier cycle fern ferns fiddlehead filicophyta green hymenophyllaceae leaves life long macro metaxyaceae monilophyte monilophytes natural nature nonflowering orpen outdoors plant plants polypodiaceae pteridaceae pteridophyta salviniales species spores stems tempskya tight tropical true type unroll vascular young