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Plancia ëd Paraleucobryum longifolium Loeske 1908
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Paraleucobryum longifolium Loeske 1908

Comments ( Anglèis )

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Paraleucobryum longifolium is best distinguished by its 4-8 mm, whitish green to grayish green, glossy leaves that are falcate-secund, particularly at stem tips, slenderly subulate with margins usually serrulate in distal half. The costa has conspicuous fine striations or ridges, formed by small teeth when viewed at high magnifications, that are especially noticeable in the distal half even at low magnifications with a dissecting microscope. The capsules are common, 1.5-3 mm, erect, cylindric, straight, smooth, with a 1-2 mm long-rostrate operculum. This species and the next somewhat resemble a Dicranum because of the falcate-secund leaves. The species was reported from Alabama and Ohio by P. Müller and J.-P. Frahm (1987).

Paraleucobryum sauteri (Bruch & Schimper) Loeske has been considered a synonym by some bryologists (e.g., C. Barnes 1958; E. Lawton 1971). Gametophytically, it is distinguished by the costa (R. S. Williams 1913, as Dicranum sauteri Bruch & Schimper; P. Müller and J.-P. Frahm 1987) that is less than 1/3 the width of the leaf base compared to the costa that is more than 1/2 the width of the leaf base in P. longifolium, which also means more rows of laminal cells in P. sauteri than in P. longifolium. Müller and Frahm further distinguished P. sauteri by its leaf cross section which has large median cells compared to the smaller adaxial and abaxial layers of cells. Paraleucobryum longifolium, in contrast, according to them, has small median cells in comparison to the larger adaxial and abaxial layers of cells. They also found that the peristome teeth of P. longifolium are divided only to the middle and inserted at the mouth, whereas in P. sauteri the teeth are divided nearly to the base and inserted below the mouth of the capsule. Williams also used a peristome difference to distinguish the two taxa. He found that in P. sauteri the peristome teeth are punctate or nearly smooth on the exterior surface, whereas they are obliquely striate in P. longifolium. Müller and Frahm reported specimens of P. sauteri only for western North America through the Rocky Mountains from British Columbia to Colorado, South Dakota, Arizona and New Mexico. I have found the costa width in P. longifolium, however, to be quite variable in plants in eastern North America but some of the western North American plants do have a narrow costa that fits the description of P. sauteri. I also could not confirm the cross section difference between the two taxa in the few North American specimens that could be referred to P. sauteri. I have decided not to recognize P. sauteri for this flora because I believe that a detailed study of the P. longifolium-P. sauteri complex is necessary, especially in regard to the plants from the western part of the continent.

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 27: 395, 426, 427, 428 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description ( Anglèis )

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Plants medium-sized to large, up to 5(–8) cm high, green or yellowish green, with a grayish sheen when dry, in compact tufts. Stems erect or ascending, simple or branched, somewhat radiculose at base. Leaves 4–8 mm long, usually strongly falcate-secund, sometimes stiffly erect or fragile, linear-lanceolate, gradually narrowed to a subtubulose apex; margins plane below, slightly involute and serrulate above; costa broad, occupying ½ or more the leaf base width, filling nearly all of the subula, excurrent, 2–4 layers of thick-walled cells in transverse section, with the dorsal rows of green cells interspreading among the hyaline cells, forming longitudinal striations; laminal cells at the shoulder, elongate-rectangular to linear, sometimes porose; alar cells inflated, hyaline or brownish, usually extending close to the costa; asexual reproduction sometimes by means of fragile leaves. Setae straight, up to 1.5 cm long, reddish brown, twisted clockwise when dry; capsules erect, oblong-cylindric, 1–3 mm long, reddish brown to dark brown, irregularly furrowed when dry or empty; opercula long-rostrate, nearly as long as or slightly shorter than the urns; annuli none; stomata present; peristome teeth divided, ca. halfway down, reddish or brownish, usually perforate below, obliquely to vertically striolate to the apex. Spores 25–34 µm in diameter, finely papillose.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Moss Flora of China Vol. 1: 218 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Moss Flora of China @ eFloras.org
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Description ( Anglèis )

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Plants whitish green to grayish green, sometimes yellowish, lighter in color at leaf bases. Stems 1-4(-7) cm. Leaves spreading, usually falcate-secund, 4-8 × 0.2-0.8 mm, margins usually serrulate in distal half; costa covering 1/2-2/3 of leaf base, with longitudinal striations (ridges), appearing as rows of teeth at high magnifications, on abaxial surface, especially conspicuous in distal half, in cross section with adaxial hyalocysts, median chlorocysts and abaxial hyalocysts with scattered chlorocysts in some abaxial cells. Seta 8-20 mm. Capsule 1.5-3 mm; operculum 1-2 mm. Spores 22-35 µm.
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drit d'autor
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 27: 395, 426, 427, 428 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Distribution ( Anglèis )

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Distribution: China, India, Japan, Russia, Europe, and North America.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Moss Flora of China Vol. 1: 218 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Moss Flora of China @ eFloras.org
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Gao Chien & Marshall R. Crosby
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eFloras.org
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eFloras

Habitat ( Anglèis )

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Habitat: on rotten logs, tree bases or rocks, rarely on soil.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Moss Flora of China Vol. 1: 218 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Moss Flora of China @ eFloras.org
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Gao Chien & Marshall R. Crosby
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Synonym ( Anglèis )

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Dicranum longifolium Ehrhart ex Hedwig, Sp. Musc. Frond., 130. 1801; Campylopus canadensis Kindberg; D. serratum Kindberg
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 27: 395, 426, 427, 428 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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Langblättriges Weißgabelzahnmoos ( Alman )

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Stämmchen-Nahansicht

Das Langblättrige Weißgabelzahnmoos (Paraleucobryum longifolium, Syn.: Dicranum longifolium Hedw.) ist eine Laubmoos-Art aus der Familie Dicranaceae.

Merkmale

Das Dicranum-ähnliche Moos bildet lockere hell- bis dunkelgrüne, etwas glänzende Rasen. Die schwach rhizoidfilzigen Stämmchen werden meist 3 bis 4 Zentimeter, seltener bis 8 Zentimeter hoch. Die Blätter sind an der Sprossspitze schopfig gehäuft und gewöhnlich sichelförmig-einseitswendig, selten gerade und aus lanzettlichem Grund in eine lange pfriemen- und röhrenförmige, an den Rändern gesägte Spitze ausgezogen. Die breite Blattrippe nimmt am Blattgrund die halbe Blattbreite ein und die Lamina auf beiden Seiten der Rippe ist nur 10 bis 15 Zellreihen breit. Im oberen pfriemenförmigen Blattteil ist die Rippe an der Rückseite längsgefurcht und füllt die ganze Blattbreite aus.

Die Laminazellen sind am Blattgrund rechteckig und nach oben hin kürzer. Blattflügelzellen sind etwas erweitert und bräunlich. Der Rippenquerschnitt ist dreizellschichtig: ventrale (bauchseitige) hyaline Außenzellen, mediane Chlorophyllzellen und an der Dorsal(Rücken-)seite Hyalin- und Chlorophyllzellen.

Das Moos ist diözisch. Sporophyten werden nur selten ausgebildet. Sporenreife ist im Sommer. Die Seta ist unten rötlich, darüber gelblich, 1 bis 2 Zentimeter lang und trägt eine aufrechte, gerade, zylindrische Kapsel. Der Kapseldeckel ist lang geschnäbelt. Die fein papillösen Sporen sind 14 bis 21 µm groß.

Standortansprüche und Verbreitung

Das Langblättrige Weißgabelzahnmoos ist kalkmeidend und wächst an nicht zu trockenen Standorten auf silikatischem Gestein und am Stammgrund von Laubbäumen. Im Flachland kommt es nur vereinzelt vor, in Silikatgebirgen ist es ziemlich verbreitet. In den Alpen steigt es bis in mittlere alpine Höhenlagen. Das Moos kommt auf der Nordhalbkugel in Europa, Asien und Nordamerika vor.

Literatur

Weblinks

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Langblättriges Weißgabelzahnmoos: Brief Summary ( Alman )

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 src= Stämmchen-Nahansicht

Das Langblättrige Weißgabelzahnmoos (Paraleucobryum longifolium, Syn.: Dicranum longifolium Hedw.) ist eine Laubmoos-Art aus der Familie Dicranaceae.

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Paraleucobryum longifolium ( Anglèis )

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Paraleucobryum longifolium is a species of moss belonging to the family Dicranaceae.[1]

It has almost cosmopolitan distribution.[1]

References

  1. ^ a b "Paraleucobryum longifolium Loeske, 1908". www.gbif.org. Retrieved 12 February 2021.
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Paraleucobryum longifolium: Brief Summary ( Anglèis )

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Paraleucobryum longifolium is a species of moss belonging to the family Dicranaceae.

It has almost cosmopolitan distribution.

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Kiviturkkisammal ( Finlandèis )

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Kiviturkkisammal (Paraleucobryum longifolium) on kynsisammalten heimoon ja turkkisammalten sukuun kuuluva sammal.

Ulkonäkö

Kiviturkkisammal on löyhiä kasvustoja muodostava ja sen versot ovat kiiltävät ja väriltään harmaanvalkoisesta tummanvihreään. Sen lehdet ovat jouhimaisen kapeat ja sirppimäisen käyrät. Sen keskisuoni on leveä ja täyttää kärjestä koko lehden.[2][3] Sillä on harvoin itiöpesäkkeitä. Se muistuttaa joitakin kynsisammalia.

Levinneisyys

Kiviturkkisammal kasvaa pohjoisella pallonpuoliskolla havumetsävyöhykkeessä ja vuoristoissa. Se on yleinen koko Suomessa.

Elinympäristö

Kiviturkkisammal kasvaa yleensä karuilla silikaattikivillä ja joskus myös puiden tyvillä.

Lähteet

  1. Tauno Ulvinen, Kimmo Syrjänen ja Susanna Anttila (toim.): Suomen sammalet - levinneisyys, ekologia, uhanalaisuus. Helsinki: Suomen ympäristökeskus, 2002. ISBN 952-11-1153-4 (PDF), painetussa muodossa ISBN 952-11-1152-6 (nid.). Teoksen verkkoversio.
  2. Jahns, Hans Martin: Sanikkaiset sammalet jäkälät. Otava, 1982. ISBN 951-1-06854-7.
  3. Kauppi Matti ja Halonen Pekka: Kasvien lajintuntemus. Oulun yliopisto, 2000. ISSN 1239-1646.

Aiheesta muualla

Tämä kasveihin liittyvä artikkeli on tynkä. Voit auttaa Wikipediaa laajentamalla artikkelia.
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Kiviturkkisammal: Brief Summary ( Finlandèis )

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Kiviturkkisammal (Paraleucobryum longifolium) on kynsisammalten heimoon ja turkkisammalten sukuun kuuluva sammal.

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Paraleucobryum longifolium ( vietnamèis )

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Paraleucobryum longifolium là một loài Rêu trong họ Dicranaceae. Loài này được (Ehrh. ex Hedw.) Loeske mô tả khoa học đầu tiên năm 1908.[1]

Hình ảnh

Chú thích

  1. ^ The Plant List (2010). Paraleucobryum longifolium. Truy cập ngày 19 tháng 8 năm 2013.

Liên kết ngoài


Hình tượng sơ khai Bài viết liên quan đến họ rêu Dicranaceae 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
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Paraleucobryum longifolium: Brief Summary ( vietnamèis )

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Paraleucobryum longifolium là một loài Rêu trong họ Dicranaceae. Loài này được (Ehrh. ex Hedw.) Loeske mô tả khoa học đầu tiên năm 1908.

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長葉擬白髮蘚 ( cinèis )

fornì da wikipedia 中文维基百科
二名法 Paraleucobryum longifolium
Hedw. Loeske, 1908

長葉擬白髮蘚学名Paraleucobryum longifolium)为曲尾蘚科擬白髮蘚屬下的一个种。

参考文献

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長葉擬白髮蘚: Brief Summary ( cinèis )

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長葉擬白髮蘚(学名:Paraleucobryum longifolium)为曲尾蘚科擬白髮蘚屬下的一个种。

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