Cryptogrammaceae
Encyclopedia
Cryptogrammaceae is a small family
of fern
s, which appears to be somewhat isolated from the rest of the Pteridales
. This family forms a natural clade
that is the most basal to the order. Of these, Llavea is the most basal within the clade.
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
of fern
Fern
A fern is any one of a group of about 12,000 species of plants belonging to the botanical group known as Pteridophyta. Unlike mosses, they have xylem and phloem . They have stems, leaves, and roots like other vascular plants...
s, which appears to be somewhat isolated from the rest of the Pteridales
Pteridales
The Pteridales are ferns that have their sori in linear strips under the edge of the leaf tissue, usually with the edge of the lamina reflexed over.This order is considered a family under the Smith classification...
. This family forms a natural clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
that is the most basal to the order. Of these, Llavea is the most basal within the clade.