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Comments ( englanti )

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The name Agave lophantha was mentioned by C. J. W. Schiede (Linnaea 4: 582. 1829) without a description. C. S. Kunth (Enum. Pl. 5: 838. 1850) validated the name, but not before A. univittata was proposed. Neither name is typified nor is any authentic material known. H. S. Gentry (1982) incorrectly retained A. lophantha and it is now widely used. A. J. Breitung (1959) was the first to adopt A. univittata, and that name is taken up here.
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Flora of North America Vol. 26: 444, 449 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description ( englanti )

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Plants acaulescent, usually suckering; rosettes densely cespitose, 3–6 × 5–10 dm. Leaves mostly erect, 30–40(–70) × 3–4.5(–5) cm; blade light green to yellowish green, without bud-prints, linear-lanceolate, stiff, adaxially plane to concave toward apex, abaxially convex toward base; margins undulate to crenate, nonfiliferous, not easily detached, conspicuously armed, teeth single or occasionally double, 4–6(–8) mm, 1–2 cm apart; apical spine reddish to grayish, subulate, 1–1.5(–2) cm. Scape 3–4.5(–5) m. Inflorescences spicate, densely flowered on distal 1/2; bracts caducous, acicular, 3–5 cm; peduncle 4 cm or shorter. Flowers 1 on short pedicel, or 2–7 per cluster, erect, 3.5–4(–4.5) cm; perianth greenish white to yellowish green, tube campanulate, 2–4 × 8–10 mm, limb lobes erect to slightly spreading, subequal, 14–20 mm; stamens long-exserted; filaments inserted on rim of perianth tube, spreading, greenish or lavender, 3–4.5 cm; anthers pale yellow, 15–20 mm; ovary 1.8–2.2 cm, neck constricted 5–7 mm. Capsules sessile or short-pedicellate, oblong and 1.8–2.5 cm or globose and 1.5–2 cm, apex beaked. Seeds 5–6 mm. 2n = 60.
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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: 444, 449 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Distribution ( englanti )

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Tex.; Mexico.
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Flowering/Fruiting ( englanti )

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Flowering spring.
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Flora of North America Vol. 26: 444, 449 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Habitat ( englanti )

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Sandy flats; 0--100m.
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Flora of North America Vol. 26: 444, 449 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Synonym ( englanti )

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Agave heteracantha Zuccarini; A. lophantha Schiede ex Kunth
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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: 444, 449 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Agave univittata ( englanti )

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Agave univittata, the thorn-crested century plant or thorn-crested agave,[3] is a plant species native to coastal areas of southern Texas and northeastern Mexico, at elevations less than 100 m (300 feet). It has been widely named Agave lophantha[3] by botanists including Howard Scott Gentry,[4] but the name A. univittata is older and therefore more in accord with nomenclatural rules of botany.[5]

Agave univittata has thick, fleshy leaves that are stiff and undulate (wavy) along the margins. It has sharp and prominent spines on the edges and tips of the leaves. Flowering stalk is up to 5 m (16 feet) tall, bearing greenish-white to yellow-ish green flowers.[3][4]

It is cultivated as an ornamental plant, and in the UK the cultivar 'Quadricolor' has won the Royal Horticultural Society's Award of Garden Merit.[6][7]

Because the species is widespread and the overall population is stable, it is not considered by the IUCN to be threatened.[1]

References

  1. ^ a b Hernández Sandoval, L.; González-Elizondo, M.; Zamudio, S.; Sánchez, E.; Hernández-Martínez, M.; Matías-Palafox, M. (2019). "Agave univittata". IUCN Red List of Threatened Species. 2019. Retrieved 25 March 2021.
  2. ^ "Agave univittata". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew – via The Plant List. Note that this website has been superseded by World Flora Online
  3. ^ a b c Flora of North America Editorial Committee, ed. (2002). "Agave univittata". Flora of North America North of Mexico (FNA). Vol. 26. New York and Oxford. pp. 444, 449. Retrieved 25 March 2020 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. ^ a b Gentry, Howard Scott (1982). Agaves of Continental North America. Tucson: University of Arizona Press. pp. 157–161. ISBN 0-8165-0775-9.
  5. ^ McNeill, John; Wiersema, John Harry (2012). International Code of Nomenclature for Algae, Fungi and Plants (Melbourne Code): Adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Königstein: Koeltz Scientific Books. ISBN 978-3-87429-425-6. OCLC 940304092.
  6. ^ "Agave univittata 'Quadricolor'". www.rhs.org. Royal Horticultural Society. Retrieved 27 February 2020.
  7. ^ "AGM Plants - Ornamental" (PDF). www.rhs.org. Royal Horticultural Society. November 2018. p. 3. Retrieved 27 February 2020.

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Agave univittata: Brief Summary ( englanti )

tarjonnut wikipedia EN

Agave univittata, the thorn-crested century plant or thorn-crested agave, is a plant species native to coastal areas of southern Texas and northeastern Mexico, at elevations less than 100 m (300 feet). It has been widely named Agave lophantha by botanists including Howard Scott Gentry, but the name A. univittata is older and therefore more in accord with nomenclatural rules of botany.

Agave univittata has thick, fleshy leaves that are stiff and undulate (wavy) along the margins. It has sharp and prominent spines on the edges and tips of the leaves. Flowering stalk is up to 5 m (16 feet) tall, bearing greenish-white to yellow-ish green flowers.

It is cultivated as an ornamental plant, and in the UK the cultivar 'Quadricolor' has won the Royal Horticultural Society's Award of Garden Merit.

Because the species is widespread and the overall population is stable, it is not considered by the IUCN to be threatened.

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Agave univittata ( vietnam )

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Agave univittata là một loài thực vật có hoa trong họ Măng tây. Loài này được Haw. mô tả khoa học đầu tiên năm 1831.[2]

Hình ảnh

Chú thích

  1. ^ The Plant List
  2. ^ The Plant List (2010). Agave univittata. Truy cập ngày 16 tháng 7 năm 2013.

Liên kết ngoài


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Agave univittata: Brief Summary ( vietnam )

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Agave univittata là một loài thực vật có hoa trong họ Măng tây. Loài này được Haw. mô tả khoa học đầu tiên năm 1831.

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單帶龍舌蘭 ( kiina )

tarjonnut wikipedia 中文维基百科
二名法 Agave univittata
Haw.

單帶龍舌蘭学名Agave univittata)为龍舌蘭科龍舌蘭屬下的一个种。

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單帶龍舌蘭: Brief Summary ( kiina )

tarjonnut wikipedia 中文维基百科

單帶龍舌蘭(学名:Agave univittata)为龍舌蘭科龍舌蘭屬下的一个种。

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