Comments
(
英語
)
由eFloras提供
Pterygoneurum ovatum is the most common species of the genus and serves to stabilize arid soils (S. Flowers 1973). The setae may reach 3 mm. Faint thickenings reminiscent of a rudimentary peristome can sometimes be found associated with spore sac remnants dug out of the operculum, and the laminal distal cells may by simply papillose abaxially as in P. lamellatum. R. T. Wareham (1939) found the characters of Pterygoneurum ovatum var. incanum Juratzka, the long awns and short setae, inconstant in both American and European material.
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
英語
)
由eFloras提供
Leaves with distal lamina smooth or rarely papilose; awn smooth or rarely with a few teeth; lamellae 8-16 cells in height, not lobed, seldom bearing filaments. Capsule stegocarpous, emergent to exerted, ovoid, annulus present, operculum cells in straight rows; eperistomate. Calyptra cucullate or rarely mitrate.
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
英語
)
由eFloras提供
Plants 1–2 mm high, green or yellowish green, bulbiform, in thin tufts. Stems very short, erect, simple or branched at the base. Leaves appressed when dry, weakly spreading when moist, ovate to triangularly ovate, broadly concave, 1.0–1.7 mm long with the awn; margins plane or weakly incurved; costa ending in a smooth long awn, shorter than or nearly as long as the leaf base; with 2–4 rows of green lamellae on the ventral side of costa; upper leaf cells rounded quadrate to irregularly hexagonal, 10–14 µm in diameter, thin- to weakly thick-walled at the corners, smooth or occasionally with minute C-shaped papillae; basal cells rectangular, 26–67 µm x 10–24 µm, thin-walled, smooth. Setae 1.5–3.0 mm long; capsules shortly exserted, shortly cylindrical, 1.0–1.5 mm long, dark brown, wrinkled-plicate; annuli none; opercula conic-rostrate, with a short, oblique beak; peristome teeth absent. Calyptrae cucullate, smooth. Spores 20–30 µm in diameter, brownish, finely papillose.
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
英語
)
由eFloras提供
Distribution: China, Mongolia, Russia, North America, and northern Africa.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
英語
)
由eFloras提供
Habitat: on dry soil over rocks.
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
英語
)
由eFloras提供
Gymnostomum ovatum Hedwig, Sp. Musc. Frond., 31, plate 2, figs. 1-3. 1801
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Pterygoneurum ovatum: Brief Summary
(
英語
)
由wikipedia EN提供
Pterygoneurum ovatum is a species of moss belonging to the family Pottiaceae.
It has cosmopolitan distribution.
Pterygoneurum ovatum: Brief Summary
(
越南語
)
由wikipedia VI提供
Pterygoneurum ovatum là một loài Rêu trong họ Pottiaceae. Loài này được (Hedw.) Dixon miêu tả khoa học đầu tiên năm 1934.