doryopteris การใช้

Although Cheilanthoideae subfamily itself is thought to be monophyletic, at least half of its genera ( including " Cheilanthes ", " Doryopteris ", " Notholaena ", and " Pellaea " ) have been shown to be polyphyletic.
Tryon's first scientific paper was published in 1934 ( at the age of 18 ) on the ferns in Harvard, earning he earned both his M . S . in 1940 and Ph . D . in 1941 working with Merritt Lyndon Fernald and Charles Alfred Weatherby on ferns in the genera " Pteridium " and " Doryopteris ".
Genetic analysis has shown it to be a stem offshoot clade of all the cheilanthoid ferns ( in family Pteridaceae ), except for " Doryopteris ", which is an even more basal ( " primitive " ) stem offshoot . for years, it was assumed that this genus was closely allied with " Hemionitis ", but genetic analysis has shown that genus to be a more advanced genus evolutionarily.