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Image of American rockbrake
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American Rockbrake

Cryptogramma acrostichoides R. Br. apud Richards.

Comments

provided by eFloras
Cryptogramma acrostichoides has often been treated as a variety or subspecies of the strictly European Cryptogramma crispa (Linneaus) R. Brown, which has a chromosome number of 2 n = 120.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Flora of North America Editorial Committee
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eFloras.org
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Description

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Stems decumbent to erect, much branched from base, stout, 10--20 mm diam. (including hardened, persistent leaf bases); scales bicolored, dense, broadly lanceolate to linear, to 6 × 2 mm. Leaves densely tufted, green over winter, persistent after withering; sterile leaves spreading, 3--17 cm; fertile leaves erect, 5--25 cm; hairs small, appressed, cylindric, scattered along grooves of petiole and along costae and costules of adaxial blade surface. Petiole green to straw-colored, dark brown on proximal 1/8 or less, 1--2 mm wide, firm and strawlike, not collapsed; scales bicolored or ± concolored, becoming sparse distally. Blade deltate to ovate-lanceolate, all 2--3-pinnate, somewhat leathery, opaque; hydathodes sunken below leaf surface. Segments of sterile leaves oblong to ovate-lanceolate, bases cuneate, distal 2/3--1/2 of segments crenate to dentate, often somewhat more deeply incised every 2d tooth; segments of fertile leaves horizontal to ascending, strongly differentiated from those of sterile leaves, linear, 3--12 × 1--2 mm; margins of fertile segments revolute, covering sporangia. Sporangia in sori that coalesce at maturity. 2 n = 60.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
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eFloras

Distribution

provided by eFloras
Alta., B.C., Man., N.W.T., Ont., Sask., Yukon; Alaska, Ariz., Calif., Colo., Idaho, Mich., Mont., Minn., Nev., N.Mex., Oreg., Utah, Wash., Wyo.; reported from Mexico in Baja California; Asia.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
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eFloras

Habitat

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New growth produced in spring, spores maturing in summer, sterile leaves green over winter, senescing 2d spring. Noncalcareous cliff crevices, rock outcrops, and talus, often in relatively dry habitats, typically montane but occurring in lowland to alpine habitats; 0--3700m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
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eFloras

Synonym

provided by eFloras
Cryptogramma crispa (Linnaeus) R. Brown ex Hooker subsp. acrostichoides (R. Brown) Hultén; C. crispa var. acrostichoides (R. Brown) C. B. Clarke
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Cryptogramma acrostichoides

provided by wikipedia EN

Cryptogramma acrostichoides is a fern species in the Cryptogrammoideae subfamily of the Pteridaceae.[1] It is known by the common names American parsley fern and American rockbrake and is native to most of western North America, where it grows in the cracks of rocks in many types of sunny mountainous habitat.

Description

Cryptogramma acrostichoides grows in a single tuft from a short rhizome. There are two leaf types. The sterile leaf has flat, oval-shaped lobed leaflets resembling parsley, and the fertile leaf is longer with narrow, thick, linear leaflets with their margins curled under to cover the sporangia on the undersides.[2] The fertile leaves typically project well above the sterile leaves. Some plants die back completely toward the end of a dry period while others remain green over winter and die back in the spring. In both cases, the leaves are not shed and the following growth season they are usually apparent as a tuft of dead leaves, in contrast to its close relative Cryptogramma cascadensis, which is deciduous.[2] Hydathodes form a slight depression near the leaflet edge at the end of each vein and there are sparse short appressed hairs present in the groove on the upper side of the rachis and costae (they are difficult to see without close inspection with a lens).[2]

Cryptogramma acrostichoides leafing out in spring
Cryptogramma achrostichoides fertile leaves

Range

Cryptogramma acrostichoides is found mostly in the coastal mountain ranges of western North America and in the Rocky Mountains. It ranges from Alaska to California in coastal mountains and the Cascade Mountains and Sierra Nevada, and from southeastern British Columbia through New Mexico in the Rockies.

References

  1. ^ Maarten J. M. Christenhusz, Xian-Chun Zhang & Harald Schneider (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. doi:10.11646/phytotaxa.19.1.2.
  2. ^ a b c Hitchcock, C.L. and Cronquist, A. 2018. Flora of the Pacific Northwest, 2nd Edition, p. 56. University of Washington Press, Seattle.

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Cryptogramma acrostichoides: Brief Summary

provided by wikipedia EN

Cryptogramma acrostichoides is a fern species in the Cryptogrammoideae subfamily of the Pteridaceae. It is known by the common names American parsley fern and American rockbrake and is native to most of western North America, where it grows in the cracks of rocks in many types of sunny mountainous habitat.

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Cryptogramma acrostichoides ( Vietnamese )

provided by wikipedia VI

Cryptogramma acrostichoides là một loài thực vật có mạch trong họ Adiantaceae. Loài này được R. Br. miêu tả khoa học đầu tiên năm 1823.[1]

Hình ảnh

Chú thích

  1. ^ The Plant List (2010). Cryptogramma acrostichoides. Truy cập ngày 12 tháng 8 năm 2013.

Tham khảo


Bài viết liên quan đến Họ Nguyệt xỉ này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Wikipedia tác giả và biên tập viên
original
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wikipedia VI

Cryptogramma acrostichoides: Brief Summary ( Vietnamese )

provided by wikipedia VI

Cryptogramma acrostichoides là một loài thực vật có mạch trong họ Adiantaceae. Loài này được R. Br. miêu tả khoa học đầu tiên năm 1823.

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cc-by-sa-3.0
copyright
Wikipedia tác giả và biên tập viên
original
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wikipedia VI