cheilanthes การใช้

• The species was originally described by Gustav Kunze in 1834 as " Cheilanthes paralellogramma ".
• ""'Cheilanthes austrotenuifolia " "'is a species of Australian rock fern from the family Pteridaceae.
• Plants in this genus superficially resemble " Cheilanthes ", but the sporangial structure indicates their close affinity to " Anemia ".
• "Cheilanthes tomentosa " is a small fern with leaves from 8-45 cm, typically around 20 cm long and 1.5-8 cm wide.
• Except for the two new species, the rest of the Gaga ferns were reclassified, having previously been assigned to the genus " Cheilanthes ", based on their outward appearance.
• The distinction of " Pellaea " from the typically hairier or scalier " Cheilanthes " has proven difficult, with some members being of uncertain affinity, listed by different authors in both genera.
• 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.
• Interestingly, three ferns were found for the first time in the A飏 recently, " Cheilanthes coriacea ", " Actiniopteris radiata ", and " Ophioglossum polyphyllum ", suggesting that ferns may be more prone to develop in arid environments than commonly proposed.
• ""'Cheilanthes " "'( "'lip ferns "') is a genus of about 180 species of rock-dwelling ferns with a cosmopolitan distribution in warm, dry, rocky regions, often growing in small crevices high up on cliffs.
• The similar genus " Argyrochosma " also has farinose leaves, but in that genus the ultimate segments of the leaves have entire margins and * are distinctly stalked, whereas in " Notholaena " the ultimate segments are usually lobed or pinnatifid and segregated from " Notholaena ", and other former members of " Notholaena " are now in the genus " Cheilanthes ".