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Argyrochosma
''Argyrochosma'' is a genus of ferns known commonly as false cloak ferns. The genus is included in the Cheilanthoideae subfamily of the Pteridaceae. Species now in this genus were previously treated as members of related genera ''Notholaena'' or ''Pellaea'' but were segregated into their own genus in 1987. These ferns, of which there are about 20 species, are mostly native to the Americas, from North to South and including the Caribbean, while one species, ''A. connectens'', is known from Sichuan, China. They are commonly found growing in cracks between rocks. Their leaves are generally shorter than 40 centimeters and have rounded bluish or grayish green segments. Often the lower surface of the segments is coated in a white dust, and the sporangia A sporangium (; from Late Latin, ) is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. Virtually all plants, fungi, and many other lineages form sporangia at some point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma
''Argyrochosma'' is a genus of ferns known commonly as false cloak ferns. The genus is included in the Cheilanthoideae subfamily of the Pteridaceae. Species now in this genus were previously treated as members of related genera ''Notholaena'' or ''Pellaea'' but were segregated into their own genus in 1987. These ferns, of which there are about 20 species, are mostly native to the Americas, from North to South and including the Caribbean, while one species, ''A. connectens'', is known from Sichuan, China. They are commonly found growing in cracks between rocks. Their leaves are generally shorter than 40 centimeters and have rounded bluish or grayish green segments. Often the lower surface of the segments is coated in a white dust, and the sporangia A sporangium (; from Late Latin, ) is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. Virtually all plants, fungi, and many other lineages form sporangia at some point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Tenera
''Argyrochosma'' is a genus of ferns known commonly as false cloak ferns. The genus is included in the Cheilanthoideae subfamily of the Pteridaceae. Species now in this genus were previously treated as members of related genera ''Notholaena'' or ''Pellaea'' but were segregated into their own genus in 1987. These ferns, of which there are about 20 species, are mostly native to the Americas, from North to South and including the Caribbean, while one species, ''A. connectens'', is known from Sichuan, China. They are commonly found growing in cracks between rocks. Their leaves are generally shorter than 40 centimeters and have rounded bluish or grayish green segments. Often the lower surface of the segments is coated in a white dust, and the sporangia A sporangium (; from Late Latin, ) is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. Virtually all plants, fungi, and many other lineages form sporangia at some point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Flava
''Argyrochosma'' is a genus of ferns known commonly as false cloak ferns. The genus is included in the Cheilanthoideae subfamily of the Pteridaceae. Species now in this genus were previously treated as members of related genera ''Notholaena'' or ''Pellaea'' but were segregated into their own genus in 1987. These ferns, of which there are about 20 species, are mostly native to the Americas, from North to South and including the Caribbean, while one species, ''A. connectens'', is known from Sichuan, China. They are commonly found growing in cracks between rocks. Their leaves are generally shorter than 40 centimeters and have rounded bluish or grayish green segments. Often the lower surface of the segments is coated in a white dust, and the sporangia contain brown spores. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *'' Argyrochosma chilensis'' (Fée ex J.Rémy) Windham *'' Argyrochosma connectens'' (C.Chr.) G.M.Zhang *'' A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Limitanea
''Argyrochosma limitanea'', the southwestern false cloak fern, is a species of fern native to the southwestern United States and Sonora, Mexico. It grows on calcareous rocks, and has small, finely-divided leaves with a leathery texture, dark axes connecting the leaf segments, and a heavy coating of white powder on the undersurface. It reproduces apogamously; two subspecies are recognized, which may have originated independently through the hybridization of other taxa not yet discovered. First described as a species in 1919, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description The rhizome is short and horizontal, with leaves closely spaced. It bears thin linear to lanceolate brown to reddish-brown or chestnut-brown scales, of a uniform color and with entire (toothless) margins. The leaves range from long. The stipe (the stalk of the leaf, belo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Jonesii
''Argyrochosma jonesii'', known as Jones' false cloak fern, is a species of fern native to the southwestern United States and Sonora, Mexico. It grows on calcareous rocks, and has small, finely-divided leaves with a leathery texture and dark axes connecting the leaf segments. Unlike many members of ''Argyrochosma'', it does not secrete white powder on the underside of its leaves. First described as a species in 1917, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description The rhizome is short and horizontal, with leaves closely spaced. It bears linear or linear- subulate, uniformly colored, brown or reddish-brown scales, sometimes nearly black in color, with entire (toothless) margins and a thin texture. They are long and wide. The leaves range from long, and arise in clumps. The stipe (the stalk of the leaf, below the blade) is chestnut brown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Microphylla
''Argyrochosma microphylla'', the small-leaf false cloak fern, is a species of fern native to New Mexico, Texas and northern Mexico. It grows on limestone rocks and cliffs, and has finely-divided leaves with small leaf segments, often folded in half when dry, which lack the white powder present on the leaf underside of many related species. First described as a species in 1869, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description The rhizome is short and horizontal, with leaves closely spaced. It bears thin, narrowly lanceolate or linear brown to dark orange, chestnut-brown, or reddish-brown scales , of a uniform color and with entire (toothless) margins. The leaves are long, arising in clumps. The stipe (the stalk of the leaf, below the blade) is rounded, somewhat flattened or grooved on the upper surface, reddish-brown to dark brown, or ches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Incana
''Argyrochosma incana'', the hairy false cloak fern, is a fern known from the southwestern United States through Mexico to Guatemala, and from a disjunct population in the Dominican Republic. It grows on rocky slopes and steep banks, often in forests. Like many of the false cloak ferns, it bears white powder on the underside of its leaves. First described as a species in 1825, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description ''Argyrochosma incana'' is a medium-sized epipetric fern. The rhizome is short, thick, and may be horizontal or somewhat upright. It bears linear to lanceolate or linear-ligulate (straplike) scales long and wide, without teeth at the margins and long-attenuate at the tip. They are of a uniform dark, shiny brown, chestnut-brown or yellowish-brown color with some dark brown patches. From the rhizome, the fronds arise in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Fendleri
''Argyrochosma fendleri'', Fendler's false cloak fern, is a fern known from the western United States and northwestern Mexico. It grows in rocky habitats, and is distinguished from other members of the genus by its zig-zag leaf axes. Like many species in the genus, it bears white powder on the underside of its leaves. First described as a species in 1851, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description ''Argyrochosma fendleri'' is a medium-sized epipetric fern. The rhizome is compact, wide, and may be horizontal or upright. It bears linear to lanceolate scales long, thin in texture and of a uniform orange-brown or chestnut-brown color with entire (toothless) margins. From it, numerous fronds arise in dense clumps. From base to tip of leaf, they are long and wide. Of this length, about half is made up by the stipe (the stalk of the leaf, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Dealbata
''Argyrochosma dealbata'', the powdery false cloak fern, is a small fern endemic to the central and southern United States. It grows on calcareous rocks, such as limestone. Its leaves are highly divided, with leaf segments joined by shiny, chestnut-brown axes, and their undersides are coated with white powder, giving the fern its name. First described as a species in 1814, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description The rhizome is compact, more or less upright, and usually unbranching, and bears brown, pale brown or yellowish-brown scales that are uniform in color. These are about long, thin and delicate, narrowly lanceate or linear and entire (toothless) at the edges. The fronds of ''A. dealbata'' spring from the rhizome in clusters and are long. The stipe (the stalk of the leaf, below the blade) is a shiny pale to medium brown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Stuebeliana
''Argyrochosma stuebeliana'' is a fern endemic to Peru. Its highly divided, leathery leaves are coated with white powder on their under surface. Originally described as a variety of ''Argyrochosma dealbata'' (then in ''Pellaea'') in 1909, based on a single leaf collected by Alphons Stübel, whom its name honors, it was recognized as a distinct species in 1961, distinguished from similar members of the genus largely by its round leaf segments. It was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description ''Argyrochosma stuebeliana'' is generally quite similar to ''A. dealbata'' and ''A. limitanea''. The leaf blades have dark, shiny axes and are several times divided, and bear a coating of white farina (powder) on the underside. The reddish-brown, rather than chestnut brown, color of the axes and the leathery texture of the leaves, obscuring the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Peninsularis
''Argyrochosma peninsularis'' is a fern endemic to Baja California Sur. It grows in dry, rocky places. First described as a species in 1939, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). A dusting of powdery material and the presence of occasional scales on the central axis of its leaves help distinguish it from related species. Description ''Argyrochosma peninsularis'' is a medium-sized epipetric fern. The rhizome is short and compact, and may be horizontal or upright. It bears linear- subulate (awl-shaped) or lanceolate scales, long and acuminate at the tip, with entire (toothless) margins. They are of a uniform color, pale to chestnut brown or orange-brown. Fronds arise from the rhizome in clumps; they measure in total length, sometimes as short as , about 40% of which is made up by the stipe (the stalk of the leaf, below the blade). The stipe i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrochosma Pallens
''Argyrochosma pallens'' is a fern endemic to Mexico. It has narrow, divided leaves with brown axes; the leaves are dusted with white powder above and coated in it below. First described as a species in 1956, it was transferred to the new genus ''Argyrochosma'' (the "false cloak ferns") in 1987, recognizing their distinctness from the "cloak ferns" (''Notholaena'' ''sensu stricto''). Description ''Argyrochosma pallens'' is a medium-sized epipetric fern. The rhizome may be upright or decumbent (horizontal, curving upward at the tip). It bears linear to lanceolate scales long that terminate in a fine hair, of a uniform reddish-brown color, with entire (toothless) margins. From it, the fronds arise in clumps. From base to tip of leaf, they are up to long. Of this length, from 20% to 33% is made up by the stipe (the stalk of the leaf, below the blade). Both stipe and rachis (leaf axis) are round and chestnut-brown, bearing farina (powder) and a scattering of narrow linear or sligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
