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Spiranthes brevilabris and S. floridana are often and easily confused, although the degree of pubescence is an excellent diagnostic tool in the field.
This species has dramatically declined, with only a single extant population known in 1998–2000.
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Description
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Plants 7–40 cm. Roots few, spreading to descending, mostly to 0.5 cm diam., slender. Leaves usually persisting through anthesis, 3–5, basal, spreading, oval-oblanceolate, 2–6 × 1–2 cm. Inflorescences: spikes secund to loosely spiraled, 8–10 flowers per cycle of spiral; rachis densely pubescent, some trichomes capitate to clavate, glands obviously stalked. Flowers cream to pale yellow; sepals distinct to base, 5 × 1 mm; lateral sepals appressed; petals linear to lance-oblong, 5 × 1 mm, apex acute to obtuse; lip yellow centrally, ovate to oblong, 5 × 2.5 mm, apex dilated, yellow, pubescent, apical margin crisped, finely lacerate; veins several, branches very short; basal calli long-pointed, mostly to 1 mm; viscidium linear-lanceolate; ovary mostly 3 mm. Seeds monoembryonic.
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Distribution
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Ala., Fla., Ga., La., Miss., Tex.
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Flowering/Fruiting
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Flowering Feb--Apr.
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Habitat
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Dry to moist roadsides and fields; 0--100m.
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Synonym
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Spiranthes gracilis (Bigelow) Beck var. brevilabris (Lindley) Correll
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Spiranthes brevilabris
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Spiranthes brevilabris, the short lipped ladies' tresses or Texas lady's tresses is a rare and endangered orchid native to the southeastern United States.[2][1]
Variations
There are two recognized variations:[3]
- Spiranthes brevilabris var. brevilabris
- Spiranthes brevilabris var. floridana
Description
Spiranthes brevilabris plants are 7–40 cm tall, with 3-5 basal leaves usually present when flowering. Flowers are arranged in a spiral around the stem, with a cream white to ivory yellow color. The inside of the lip is yellow. Bloom time is February to April.[4]
Distribution and habitat
Spiranthes brevilabris can be found in Florida and Texas, with historic records from Mississippi, Louisiana, Georgia and Alabama but assumed to be extirpated in those states. It grows in wet pine savannas and moist meadows and roadsides.[1]
Taxonomy
Spiranthes brevilabris was first described by John Lindley in 1840.[5]
References
Media related to Spiranthes brevilabris at Wikimedia Commons
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Spiranthes brevilabris: Brief Summary
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wikipedia EN tarafından sağlandı
Spiranthes brevilabris, the short lipped ladies' tresses or Texas lady's tresses is a rare and endangered orchid native to the southeastern United States.
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Spiranthes brevilabris
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wikipedia VI tarafından sağlandı
Spiranthes brevilabris là một loài thực vật có hoa trong họ Lan. Loài này được Lindl. miêu tả khoa học đầu tiên năm 1840.[1]
Chú thích
Liên kết ngoài
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Spiranthes brevilabris: Brief Summary
(
Vietnamca
)
wikipedia VI tarafından sağlandı
Spiranthes brevilabris là một loài thực vật có hoa trong họ Lan. Loài này được Lindl. miêu tả khoa học đầu tiên năm 1840.
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- Wikipedia tác giả và biên tập viên
Media related to Spiranthes brevilabris at Wikimedia Commons 
