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Cheilanthes Pteridioides
''Cheilanthes'', commonly known as 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. Most are small, sturdy and evergreen. The leaves, often densely covered in trichomes, spring directly from the rootstocks. Many of them are desert ferns, curling up during dry times and reviving with the coming of moisture. At the ends of veins Sporangium, sporangia, or spore-bearing structures, are protected by leaf margins, which curl over them. Taxonomy The genus name is derived from the Ancient Greek, Greek words χεῖλος (''cheilos''), meaning "lip," and ἄνθος (''anthos''), meaning "flower." ''Cheilanthes'' as traditionally Circumscription (taxonomy), circumscribed is now known to be highly paraphyletic, comprising at least four generically separate groups. The type species, ''Cheilanthes micropteris, C. micropteris'', is most closely allied to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheilanthes Parryi
''Myriopteris parryi'', formerly known as ''Cheilanthes parryi'', is a species of Myriopteris, lip fern known by the common name Parry's lip fern. Description ''Myriopteris parryi'' is a small tufted fern growing from a short creeping rhizome with medium brown scales, most with a darker thread-like mid-stripe. The leaf is usually 6-15 cm long (rarely up to 25 cm) and 1-3 cm wide. The leaf blades are oblong-lanceolate, twice pinnate, and densely wooly. The stipe (leaf stalk) is no more than 1 mm wide and has hairs that range in length, are bent, and are variably appressed to the stipe. Leaf segments are small, nearly round, and flat, with tangled hairs about 4 mm long densely on both surfaces. The adaxial (upper) leaf hairs are silver to white and the abaxial (lower) leaf hairs are tan to brown or golden. The pale hairs on top of the leaflets are often thick enough to make the plant look quite woolly from above. On the underside of the leaf the dark colored sporangium, sporangia m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
