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Plancia ëd Platanthera brevifolia (Greene) Senghas
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Platanthera brevifolia (Greene) Senghas

Comments ( Anglèis )

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The greatly reduced herbage of Platanthera brevifolia is distinctive. Robust plants may lack developed leaves altogether, with merely a few reduced bracts at the base of the stem and an inflorescence comprising nearly the entire height of the plant. A strong mycotrophic mode is suggested by the occurrence in some colonies of truly albino plants without pigmentation.

Platanthera brevifolia largely replaces P. sparsiflora in Mexico and is very distinctive at its northern limit in the United States. Although P. sparsiflora is exceedingly variable in floral dimensions, in habit, and in the number, size, and placement of leaves, the pattern seen in P. brevifolia seems to lie outside this range of variation. With a generally longer spur and very different ecologic requirements, it is here treated at the specific level. Nonetheless, P. brevifolia is reported to intergrade with P. sparsiflora in Mexico (R. McVaugh and W. R. Anderson. 1974+, vol. 16, pp. 254–256), yet the latter species probably does not range there beyond a possible occurrence in Baja California (M. A. Soto 1988).

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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 26: 562 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description ( Anglèis )

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Plants 16–60 cm. Leaves few, ascending-sheathing, little more than bracts, scarcely reduced distally; bracts often lacking; blade ovate to elliptic-ovate, 2.5–6 × 0.7–2 cm. Spikes lax to rather dense. Flowers resupinate, not showy, green to yellowish green; lateral sepals reflexed or sometimes spreading; petals ovate- to lance-falcate, margins entire; lip descending or reflexed, linear to linear-oblong or linear-lanceolate, 6–10(–14) mm, margins entire, often with series of low parallel ridges on adaxial surface; spur cylindric or tapering toward apex, 9–20 mm, apex usually rather acute; rostellum lobes somewhat divergent, directed forward, rounded-subangular, rather prominent; pollinaria straight; pollinia remaining enclosed in anther sacs; viscidia orbiculate to broadly elliptic-oblong; ovary rather slender to stout, mostly 6–12 mm.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 26: 562 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
sorgiss
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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eFloras

Distribution ( Anglèis )

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N.Mex.; Mexico.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 26: 562 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flowering/Fruiting ( Anglèis )

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Flowering Jul--Sep.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 26: 562 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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Habitat ( Anglèis )

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Dry to moist open, usually coniferous, forest, sometimes seasonally moist banks of intermittent streams; 2100--2750m.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
sitassion bibliogràfica
Flora of North America Vol. 26: 562 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Synonym ( Anglèis )

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Habenaria brevifolia Greene, Bot. Gaz. 6: 218. 1881; H. sparsiflora var. brevifolia (Greene) Correll; Limnorchis brevifolia (Greene) Rydberg; Platanthera sparsiflora var. brevifolia (Greene) Luer
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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. 26: 562 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
sorgiss
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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Platanthera brevifolia ( Anglèis )

fornì da wikipedia EN

Platanthera brevifolia, the shortflowered bog orchid or short-leaf bog orchid, is a terrestrial orchid of North America.

Description

Platanthera brevifolia plants are 16–60 cm tall. Their leaves are close to and sheathing the stem. Flowering time is from July to September, with up to 40 green to yellowish-green flowers. The flowers have a lip which can be 10 mm long and a long nectar spur of 9–20 mm.[1][2]

Distribution and habitat

Platanthera brevifolia is found in New Mexico in the United States and in Mexico, at an elevation of 2100–2750 m. The habitat is dry to moist gravel, loam and limestone. They prefer open, usually coniferous forest.[1][2]

Taxonomy

Platanthera brevifolia was first described by Edward Lee Greene in 1881 (as Habenaria brevifolia).

References

Wikimedia Commons has media related to Platanthera brevifolia.
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Platanthera brevifolia: Brief Summary ( Anglèis )

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Platanthera brevifolia, the shortflowered bog orchid or short-leaf bog orchid, is a terrestrial orchid of North America.

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Platanthera brevifolia ( vietnamèis )

fornì da wikipedia VI

Platanthera brevifolia là một loài thực vật có hoa trong họ Lan. Loài này được (Greene) Senghas miêu tả khoa học đầu tiên năm 1973.[1]

Chú thích

  1. ^ The Plant List (2010). Platanthera brevifolia. Truy cập ngày 7 tháng 6 năm 2013.

Liên kết ngoài


Hình tượng sơ khai Bài viết tông Lan 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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Platanthera brevifolia: Brief Summary ( vietnamèis )

fornì da wikipedia VI

Platanthera brevifolia là một loài thực vật có hoa trong họ Lan. Loài này được (Greene) Senghas miêu tả khoa học đầu tiên năm 1973.

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