Comments
(
İngilizce
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eFloras tarafından sağlandı
Polystichum lemmonii forms sterile hybrids with P . scopulinum and P . munitum . The first hybrid may be abundant where the two parents grow together, which they frequently do in the Wenatchee Mountains of Washington and Siskiyou Mountains of northern California and southwest Oregon. The hybrid is very similar to P . lemmonii but has malformed sporangia and slightly less divided pinnae than P . lemmonii . The P . lemmonii × P . munitum hybrid is morphologically indistinguishable from P . scopulinum ; it is a sterile diploid reported only twice from the Wenatchee Mountains of Washington (W. H. Wagner Jr. 1973; P. S. Soltis et al. 1989). It is possible that this hybrid involves P . imbricans and not P . munitum ; neither study distinguished between them.
American authors have misapplied the name Polystichum mohrioides (Bory) C. Presl, a South American species, to P . lemmonii .
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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İngilizce
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eFloras tarafından sağlandı
Stems decumbent to ascending. Leaves erect, 1--3.5 dm; bulblets absent. Petiole 1/5--1/4 length of leaf, sparsely scaly; scales pale tan, abruptly diminishing in size distally. Blade narrowly lanceolate, 2-pinnate, scarcely narrowed at base. Pinnae ovate, overlapping, folded inward and twisted horizontally, 0.5--2 cm; base truncate to oblique, proximal acroscopic pinnules not enlarged; apex broadly acute; microscales narrowly lanceolate, with few projections, sparse, ± confined to costa of both surfaces. Pinnules ± stalked, rounded, acroscopic auricle not well developed, margins entire to weakly dentate, apex rounded. Indusia entire or minutely dentate-erose. Spores dark brown to blackish. 2 n = 82.
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Distribution
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B.C.; Calif., Oreg., Wash.
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Habitat
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On rocky serpentine slopes; 1200--2400m.
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Synonym
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Polystichum mohrioides (Bory) C. Presl var. lemmonii (L. Underwood) Fernald
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Polystichum lemmonii
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İngilizce
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wikipedia EN tarafından sağlandı
Polystichum lemmonii is a species of fern known by the common names Lemmon's holly fern and Shasta fern. It is native to western North America from the Sierra Nevada of California north to Washington. It is also known from British Columbia, where there is a single occurrence in the mountains above the Okanagan Valley.[1]
Description
This fern produces several narrow, erect lance-shaped leaves 10 to 35 centimeters long. Each leaf (frond) is made up of many oval leaflets (pinnae) which are overlapping, folded, and twisted such that the leaves may appear almost cylindrical in outline. Leaflet margins are entire or bluntly dentate.[2][3]
Habitat
P. lemmonii grows in mountainous habitat on ultramafic rock substrates, almost always in serpentine soils or among serpentine rocks.[2][3] Though it grows in very restricted areas, P. lemmonii can be locally very abundant.
Gallery
On ultramafic rock in Wenatchee Mountains
Adaxial (upper) leaf surface
Abaxial (lower) leaf surface with sori
On Bean Peak in Wenatchee Mountains
References
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Polystichum lemmonii: Brief Summary
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wikipedia EN tarafından sağlandı
Polystichum lemmonii is a species of fern known by the common names Lemmon's holly fern and Shasta fern. It is native to western North America from the Sierra Nevada of California north to Washington. It is also known from British Columbia, where there is a single occurrence in the mountains above the Okanagan Valley.
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Polystic de Lemmon
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Fransızca
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wikipedia FR tarafından sağlandı
Polystichum lemmonii
Le Polystic de Lemmon (Polystichum lemmonii) est une espèce de fougère de la famille des Dryopteridaceae originaire d'Amérique du Nord.
Fougère vivace rhizomateuse, haute de 10 à 40 cm, elle ne pousse que sur roches ferromagnésiennes ou ultrabasiques.
On la trouve du nord de la Californie au sud de la Colombie-Britannique.
Elle est considérée comme menacée.
Référence
Notes et références
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Polystic de Lemmon: Brief Summary
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Fransızca
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wikipedia FR tarafından sağlandı
Polystichum lemmonii
Le Polystic de Lemmon (Polystichum lemmonii) est une espèce de fougère de la famille des Dryopteridaceae originaire d'Amérique du Nord.
Fougère vivace rhizomateuse, haute de 10 à 40 cm, elle ne pousse que sur roches ferromagnésiennes ou ultrabasiques.
On la trouve du nord de la Californie au sud de la Colombie-Britannique.
Elle est considérée comme menacée.
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Polystichum lemmonii
(
İtalyanca
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wikipedia IT tarafından sağlandı
Polystichum lemmonii è una specie di felce della famiglia delle Dryopteridaceae[1]
Il suo nome comune in inglese è Lemmon's holly fern (felce-agrifoglia di Lemmon) e Shasta fern (felce di Shasta).
Distribuzione e habitat
Essa è originaria della zona occidentale del Nordamerica dalla Sierra Nevada della California a nord dello stato di Washington. È anche nota dalla Columbia Britannica, ove si trova in un caso unico sui monti sopra la valle di Okanagan.[2]
Cresce in un habitat montano sui substrati di roccia ultrafemica, spesso su terreni ricchi di serpentinite. Questa felce produce numerose foglie strette, diritte, in forma lanceolata lunghe da 10 a 35 cm. Ogni foglia è costituita da molte foglioline ovali che si sovrappongono, ammassate e arrotolate in modo che ogni foglia ha aspetto cilindrico. I bordi possono essere lisci o dentellati.
Note
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Polystichum lemmonii: Brief Summary
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İtalyanca
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wikipedia IT tarafından sağlandı
Polystichum lemmonii è una specie di felce della famiglia delle Dryopteridaceae
Il suo nome comune in inglese è Lemmon's holly fern (felce-agrifoglia di Lemmon) e Shasta fern (felce di Shasta).
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Polystichum lemmonii
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Vietnamca
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wikipedia VI tarafından sağlandı
Polystichum lemmonii là một loài dương xỉ trong họ Dryopteridaceae. Loài này được Underw. mô tả khoa học đầu tiên năm 1900.[1]
Hình ảnh
Chú thích
Liên kết ngoài
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Polystichum lemmonii: Brief Summary
(
Vietnamca
)
wikipedia VI tarafından sağlandı
Polystichum lemmonii là một loài dương xỉ trong họ Dryopteridaceae. Loài này được Underw. mô tả khoa học đầu tiên năm 1900.
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