dcsimg

Comments ( anglais )

fourni par eFloras
A vulnerable species in China. Cultivated as an ornamental in S Yunnan and elsewhere in SE Asia. Chinese plants have been misidentified as C. rumphii Miquel (e.g., in FRPS), which occurs only in Indonesia and Papua New Guinea.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of China Vol. 4: 7 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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Description ( anglais )

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Trunk cylindric, often dichotomously branched toward apex and gradually thickened toward base, up to 16 m × 60 (-90) cm, apex not tomentose; bark gray or white-gray, smooth toward base of trunk. Leaves 40-80(-100), 1-pinnate, 0.7-1.2 (-1.5) m × 20-30(-40) cm; petiole compressed orbicular in cross section, 10-35 cm, with 6-15 spines along each side above middle part; leaf blade oblong-lanceolate, flat or occasionally slightly "V"-shaped in cross section, pale brown tomentose when young; leaflets in 50-100 pairs, longitudinally inserted at 50-60° to rachis, straight to falcate, 9-20 cm × 5-7 mm, thickly, leathery, midvein flat adaxially, sulcate when dry, raised abaxially, base decurrent, margin slightly recurved, apex acute, pungent. Cataphylls triangular, 3.5-4.5 × 1.5-2 cm, brown tomentose, apex soft. Pollen cones fusiform, 30-45 × 10-15 cm; microsporophylls cuneate, 3.5-5 × 1.2-2.5 cm, densely pale brown tomentose, apex thickened, with an upcurved point 3-4 cm. Megasporophylls more than 30, tightly grouped, 13-18 cm, densely yellowish brown silky hairy; stalk 4-7 cm; sterile blade deltoid-ovate or suborbicular, 7-9 × 6-10 cm, margin pectinate, with 29-37 lobes 2.5-3.5 cm, terminal lobe subulate, 3-4.5 cm; ovules 1(-3) on each side of distal part of stalk, glabrous. Seeds 2(-4), orange, becoming dark brown, often obovoid, compressed, 4.5-6 × 4-4.7 cm; sclerotesta smooth, sarcotesta with a mixed, thick, fleshy, fibrous layer. Pollination Jun-Jul, seed maturity Feb-Mar.
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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
citation bibliographique
Flora of China Vol. 4: 7 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Distribution ( anglais )

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S Yunnan [Bangladesh, Bhutan, Cambodia, NE India, Laos, Myanmar, Nepal, Sikkim, Thailand, Vietnam]
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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
citation bibliographique
Flora of China Vol. 4: 7 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
rédacteur
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Distribution ( anglais )

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Himalaya (Nepal, Sikkim), Assam (Khasia), Manipur, Burma, Yunnan.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Annotated Checklist of the Flowering Plants of Nepal Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Annotated Checklist of the Flowering Plants of Nepal @ eFloras.org
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K.K. Shrestha, J.R. Press and D.A. Sutton
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Elevation Range ( anglais )

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300-450 m
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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
citation bibliographique
Annotated Checklist of the Flowering Plants of Nepal Vol. 0 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Annotated Checklist of the Flowering Plants of Nepal @ eFloras.org
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K.K. Shrestha, J.R. Press and D.A. Sutton
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eFloras.org
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Habitat ( anglais )

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Dry, open thickets in limestone mountains, red soil in sparse monsoon forests; 1000-1800 m.
licence
cc-by-nc-sa-3.0
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of China Vol. 4: 7 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
rédacteur
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Synonym ( anglais )

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Cycas circinalis Linnaeus var. pectinata (Griffith) Schuster; C. dilatata Griffith; C. jenkinsiana Griffith; C. pectinata Griffith; C. wallichii Miquel.
licence
cc-by-nc-sa-3.0
droit d’auteur
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
citation bibliographique
Flora of China Vol. 4: 7 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
rédacteur
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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eFloras

Cycas pectinata ( anglais )

fourni par wikipedia EN

Cycas pectinata was the fourth species of Cycas to be named; it was described in 1826 by Scottish surgeon and botanist Francis Buchanan-Hamilton from Kamrup, Assam in northeast India. The species is one of the most widespread cycads. It is found in the northeastern part of India (Assam, Manipur, Meghalaya, Sikkim, Darjeeling), Nepal, Bhutan, northern Burma, southern China (Yunnan), Bangladesh, Burma, Malaysia, Cambodia, northern Thailand, Laos, and Vietnam.[3][4][5][6] Cycas pectinata usually grow at elevation 300 m to 1200 m and in difficult terrains.[7][8][9] In China, it grows in dry, open thickets in limestone mountains, red soil in sparse monsoon forests.[10] Cycas pectinata grows up to 40 feet (12 m) tall and has very large, ovoid male cones. The tallest Cycas pectinata is a female plant in North Kamrup, Assam which measures 52.8 feet (16.1 m). The tree is the world's tallest Cycas plant.[11] In Northeast India, the species is under severe threat due to clearing of forest and overcollection of male cones for preparation of traditional medicines.[12][13] The species is listed in CITES Appendix II and IUCN Redlist.

Historical information

Cycas pectinata was described by Hamilton in 1826 from “On the hills which bound Bengal to the east” with its habitat at “Camrupae sylvis”.[14] Kamrup (Camrupae) is a district in Assam (Northeast India).

Morphology

Tall evergreen trees with crown of leaves at the apex of trunk. Stems robust, glabrous at base and usually branched when mature. Leaves 1 to 2 m long, dark green. Male cones usually large, cylindrically ovoid and yellowish or orange in maturity. Megasporophylls deeply pectinate and densely covered with hairs. Seeds ovoid, glabrous and orange to red-yellow on maturity.

Uses

Economic

Cycas pectinata is popular ornamental plant grown in gardens and at public places. In Assam, green mature leaves are used to decorate large numbers of temporary shrines called “Pooja Pandals,” erected to worship deities during festivals. The leaves are used for decoration of the entrance of the marriage pandals and bouquets.

Traditional

Young fronds are eaten as vegetables in Manipur and Sikkim. Seeds of Cycas pectinata are traditionally utilized as a source of starch by indigenous tribes and are eaten raw or roasted in Assam and the bordering region of Meghalaya. Microsporophylls are chewed raw to cure stomach-aches and ulcers. The young microsporophylls are eaten by young men in Meghalaya and Assam to enhance male sexual potency

Vietnam

In Vietnam, cycas pectinata are called Hundred Year tree (Cây thiên tuế) and are considered as auspicious ornamental plants. Large cycads are often placed in front of mansions and corporate or government offices. [1]

Conservation efforts

Cycad Conservation Program in Manipur, India

In Northeast India, two conservation program are going on for the conservation of Cycas pectinata populations in the state of Assam and Manipur.[15] In 2014, Yendang: The Living Fossil, a cycad conservation program involving indigenous tribes and state forest department started in one of the cycad localities of Manipur (Yendang is local name of Cycas pectinata in Manipur). From 2015 onwards, Cycadologists and cycad lovers are organising Cycad Volleyball Tournament in Manipur to create awareness among the locals and to encourage youths in safeguarding the cycad populations.

References

  1. ^ Nguyen, H.T. (2010). "Cycas pectinata". IUCN Red List of Threatened Species. 2010: e.T42062A10617695. doi:10.2305/IUCN.UK.2010-3.RLTS.T42062A10617695.en. Retrieved 19 November 2021.
  2. ^ a b "Cycas pectinata". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 29 October 2010.
  3. ^ Hill, K.D. 1998-2012. http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas%20pectinata
  4. ^ Rita Singh & Khuraijam Jibankumar Singh, 2010. "Archived copy" (PDF). Archived from the original (PDF) on 2014-07-14. Retrieved 2014-06-30.{{cite web}}: CS1 maint: archived copy as title (link)
  5. ^ Pant, D.D., Singh, R. & Chauhan, D.K. 1994. On Cycas pectinata Hamilton from North-East India. Encephalartos, 38: 17-30
  6. ^ Osborne, R.; Hill, K.D.; Nguyen, H.T. & Phan Ke, L. 2007. Cycads of Vietnam. Osborne, Brisbane (Australia) and Eeden, Capre Town (South Africa)
  7. ^ Whitelock, L.M. 2002. The Cycads. Timber Press, Portland.
  8. ^ Jones, D. L. 2002. Cycads of the world. Smithsonian Institution Press, Washington, DC
  9. ^ Lindstrom, A.J. & Hill, K.D. 2007. The genus Cycas (Cycadaceae) in India. Telopea 11(4):463 – 488
  10. ^ Fu Shu-hsia, Cheng Wan-chün, Fu Li-kuo & Chen Chia-jui. 1978. Cycadaceae. In: Cheng Wan-chün & Fu Li-kuo, eds., Fl. Reipubl. Popularis Sin. 7: 4-17 http://www.efloras.org/florataxon.aspx?flora_id=3&taxon_id=200005229
  11. ^ Khuraijam Jibankumar Singh & Rita Singh, 2012. http://www.indianforester.co.in/index.php/indianforester/article/view/29048
  12. ^ Khuraijam Jibankumar Singh & Rita Singh, 2014. Population assessment and distribution of Cycas pectinata Buchanan-Hamilton in Northeast India, Pleione 8(1): 17 - 25.
  13. ^ Khuraijam Jibankumar Singh & Rita Singh. 2012. The ethnobotany of Cycas in the states of Assam and Meghalaya, India. Proceedings of 8th International Conference on Cycad Biology, Panama. Memoirs of The New York Botanical Garden. The New York Botanical Garden: New York. http://www.cycadsofindia.in/p/recent-publications.html
  14. ^ Hamilton. 1826. Mem. Wern. Nat. Hist. Soc. 5(2): 322-323, figs 3, 5
  15. ^ Khuraijam Jibankumar Singh & Rita Singh. 2012. Cycad conservation and its challenges in India. In Bhattacharya and Garg (eds) News challenges: New opportunities in environment. McMillan: New Delhi
Wikispecies has information related to Cycas pectinata.
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Cycas pectinata: Brief Summary ( anglais )

fourni par wikipedia EN

Cycas pectinata was the fourth species of Cycas to be named; it was described in 1826 by Scottish surgeon and botanist Francis Buchanan-Hamilton from Kamrup, Assam in northeast India. The species is one of the most widespread cycads. It is found in the northeastern part of India (Assam, Manipur, Meghalaya, Sikkim, Darjeeling), Nepal, Bhutan, northern Burma, southern China (Yunnan), Bangladesh, Burma, Malaysia, Cambodia, northern Thailand, Laos, and Vietnam. Cycas pectinata usually grow at elevation 300 m to 1200 m and in difficult terrains. In China, it grows in dry, open thickets in limestone mountains, red soil in sparse monsoon forests. Cycas pectinata grows up to 40 feet (12 m) tall and has very large, ovoid male cones. The tallest Cycas pectinata is a female plant in North Kamrup, Assam which measures 52.8 feet (16.1 m). The tree is the world's tallest Cycas plant. In Northeast India, the species is under severe threat due to clearing of forest and overcollection of male cones for preparation of traditional medicines. The species is listed in CITES Appendix II and IUCN Redlist.

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Cycas pectinata ( italien )

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Cycas pectinata Buch.-Ham., 1826 è una pianta appartenente alla famiglia delle Cycadaceae, diffusa nel sud-est asiatico[2].

Descrizione

È una cicade con fusto arborescente, alto sino a 1-12 m e con diametro di 14-20 cm[2].

Le foglie, pennate, lunghe 150-240 cm, sono disposte a corona all'apice del fusto e sono rette da un picciolo lungo 30-80 cm; ogni foglia è composta da 180-312 paia di foglioline lanceolate, con margine leggermente ricurvo, lunghe mediamente 20-31,5 cm, di colore verde scuro o grigio-verde, inserite sul rachide con un angolo di 45-60°.

È una specie dioica con esemplari maschili che presentano microsporofilli disposti a formare strobili terminali di forma ovoidali, lunghi 30-55 cm e larghi 16-22 cm ed esemplari femminili con macrosporofilli che si trovano in gran numero nella parte sommitale del fusto, con l'aspetto di foglie pennate che racchiudono gli ovuli, in numero di 2-4.
L'epiteto specifico pectinata fa riferimento ai lunghi dentelli, simili a pettini, dei macrosporofilli.

I semi sono grossolanamente ovoidali, lunghi 42-45 mm, ricoperti da un tegumento di colore giallo.

Distribuzione e habitat

È diffusa nelle foreste pianeggianti dell'India nord-orientale, nel Nepal e nel Bhutan; il suo areale si estende, inoltre, alla Birmania, alla provincia cinese dello Yunnan e al nord della Thailandia, del Laos e del Vietnam[2].
Prospera nelle foreste alte e chiuse o medie, sui fertili terreni profondi, spesso ricchi di argilla; è stata osservata su differenti substrati, prevalentemente calcarei.

Conservazione

La IUCN Red List classifica C. pectinata come specie vulnerabile[1].
La specie è inserita nella Appendice II della Convention on International Trade of Endangered Species (CITES)[3].

Note

  1. ^ a b (EN) Nguyen, H.T., Cycas pectinata, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
  2. ^ a b c Cycas pectinata, in The Cycad Pages. URL consultato il 13 dicembre 2014 (archiviato dall'url originale il 23 giugno 2014).
  3. ^ CITES - Appendices I, II and III (PDF), in Convention On International Trade In Endangered Species Of Wild Fauna And Flora, International Environment House, 2011 (archiviato dall'url originale il 4 agosto 2012).

Bibliografia

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Cycas pectinata: Brief Summary ( italien )

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Cycas pectinata Buch.-Ham., 1826 è una pianta appartenente alla famiglia delle Cycadaceae, diffusa nel sud-est asiatico.

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Cycas pectinata ( portugais )

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Cycas pectinata é uma espécie de cicadófita do género Cycas da família Cycadaceae, nativa do sul de Yunnan, na China, Bangladesh, Butão, noroeste da Índia, Nepal, Camboja, Laos, Myanmar, Tailândia, Vietname e Malásia.[2] Segundo dados de 2010, a população tende a descrescer.

Referências citadas

  1. Mem. Wern. Nat. Hist. Soc. 5:322. 1826.
  2. USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Base de Dados Disponível na Internet]. National Germplasm Resources Laboratory, Beltsville, Maryland. Cycas pectinata Arquivado em 9 de fevereiro de 2010, no Wayback Machine. (8 de Abril de 2010)

Outras referências

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Cycas pectinata: Brief Summary ( portugais )

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Cycas pectinata é uma espécie de cicadófita do género Cycas da família Cycadaceae, nativa do sul de Yunnan, na China, Bangladesh, Butão, noroeste da Índia, Nepal, Camboja, Laos, Myanmar, Tailândia, Vietname e Malásia. Segundo dados de 2010, a população tende a descrescer.

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Cycas pectinata ( ukrainien )

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Опис

Стовбури деревовиді, щоб 1-12 м заввишки, 14-20 см діаметром у вузькому місці; 30-40 листки в кроні. Листки темно-зелені або сіро-зелені, напівглянсові, завдовжки 150—240 см. Пилкові шишки яйцеподібне, жовті або зелені, 30-55 см, 16-22 см діаметром. Мегаспорофіли 22-30 см завдовжки, сіро-повстяні. Насіння плоске, яйцеподібне, 42-45 мм завдовжки, 33-45 мм завширшки; саркотеста жовта, не вкрита нальотом, товщиною 4-7 мм.

Поширення, екологія

Країни поширення: Бангладеш; Бутан; Камбоджа; Китай (Юньнань); Індія (Уттар-Прадеш); Лаос; М'янма; Непал; Таїланд; В'єтнам. Записаний на висоті від 600 до 1300 м над рівнем моря. Цей вид зустрічається у діапозоні від середніх до високих зімкнутих лісів, на середніх чи глибоких ґрунтах, часто багатих глиною і більш родючих ґрунтах, від помірної до глибокої тіні. Клімат тропічний, вологий, з вологим літом і більш м'якою, сухою зимою. Хоча часто зустрічається на вапняних субстратах, це жодним чином не обмежується, щоб вони також рослина граніти і мета-відкладеннях.

Використання

У гірських племенах в Ассамі, Індія, насіння їдять, а молоде листя використовується як овоч. М'ясисте стебло товчеться й використовується для миття волосся.

Загрози та охорона

Хоча його середовище проживання постійно скорочується, великі групи населення залишаються, і він не знаходиться під безпосередньою загрозою зникнення.

Джерела


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Thiên tuế ( vietnamien )

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Thiên tuế hay tuế lược (danh pháp hai phần: Cycas pectinata là loài thực vật phân bố ở đông bắc Ấn Độ, Nepal, Bhutan, bắc Myanma, Hoa Nam, bắc Thái Lan, Lào và Việt Nam.[3] Đây là loài thứ tư của chi Cycasđược đặt tên khoa học với mô tả lần đầu năm 1826. Thiên tuế cao đến 40 foot (12 m) với tán rộng.

Hình ảnh

Chú thích

  1. ^ Cycas pectinata Ham.: Vulnerable (IUCN Redlist)http://www.iucnredlist.org/details/42062/0
  2. ^ “Taxon: Cycas pectinata Buch.-Ham.”. Germplasm Resources Information Network - (GRIN). Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Truy cập ngày 29 tháng 10 năm 2010.
  3. ^ http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/cycadpg?taxname=Cycas%20pectinata

Tham khảo

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Thiên tuế: Brief Summary ( vietnamien )

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Thiên tuế hay tuế lược (danh pháp hai phần: Cycas pectinata là loài thực vật phân bố ở đông bắc Ấn Độ, Nepal, Bhutan, bắc Myanma, Hoa Nam, bắc Thái Lan, Lào và Việt Nam. Đây là loài thứ tư của chi Cycasđược đặt tên khoa học với mô tả lần đầu năm 1826. Thiên tuế cao đến 40 foot (12 m) với tán rộng.

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Саговник гребенчатый ( russe )

fourni par wikipedia русскую Википедию
Царство: Растения
Подцарство: Зелёные растения
Отдел: Саговниковидные (Cycadophyta Bessey, 1907)
Класс: Саговниковые (Cycadopsida Brongn., 1843)
Порядок: Саговниковые
Семейство: Саговниковые (Cycadaceae Pers., 1807, nom. cons.)
Вид: Саговник гребенчатый
Международное научное название

Cycas pectinata Buch.-Ham., 1826

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ITIS 899543NCBI 179187EOL 630775IPNI 297022-1TPL kew-2749621

Саговник гребенчатый[1][2] (лат. Cycas pectinata) — вечнозелёное древовидное растение рода Саговник.

Описание

Ствол древовидный, 1-12 м высотой, 14-20 см диаметром в узком месте; 30-40 листьев в кроне.

Листья тёмно-зелёные или серо-зелёные, полуглянцевые, длиной 150-240 см.

Пыльцевые шишки яйцевидные, жёлтые или зелёные, 30-55 см, 16-22 см диаметром. Мегаспорофилы 22-30 см длиной, серо-войлочные.

Семена плоские, яйцевидные, 42-45 мм длиной, 33-45 мм в ширину; саркотеста жёлтая, не покрытая налетом, толщиной 4-7 мм.

Распространение и экология

Вид распространён в странах Юго-Восточной Азии: Бангладеш, Бутан, Камбоджа, Китай (Юньнань), Индия (Уттар-Прадеш), Лаос, Мьянма, Непал, Таиланд, Вьетнам. Встречается на высоте от 600 до 1300 метров над уровнем моря. Этот вид встречается в средних и высоких сомкнутых лесах, на глубоких, часто глинистых, богатых и плодородных почвах, от умеренной до глубокой тени. Климат тропический, влажный, с влажным летом и более мягкой, сухой зимой.

Горные племена в Ассаме (Индия) едят семена, а молодые листья используются как овощ. Мясистый стебель толчется и используется для мытья волос.

Хотя среда обитания вида постоянно сокращается, остаются большие группы популяции, и вид не находится под непосредственной угрозой исчезновения.

Примечания

  1. Русское название таксона — согласно следующему изданию:
    Шрётер А. И., Панасюк В. А. Словарь названий растений = Dictionary of Plant Names / Межд. союз биол. наук, Нац. к-т биологов России, Всерос. ин-т лек. и ароматич. растений Рос. сельскохоз. академии; Под ред. проф. В. А. Быкова. — Koenigstein: Koeltz Scientific Books, 1999. — С. 2738. — 1033 с. — ISBN 3-87429-398-X.
  2. Колобов Е.С. Коллекция Саговниковых (Cycadales) Главного ботанического сада РАН (рус.) // Бюллетень Главного ботанического сада : журнал. — 2006. — Т. 192. — С. 24—38. — ISSN 0366-502X.
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Саговник гребенчатый: Brief Summary ( russe )

fourni par wikipedia русскую Википедию

Саговник гребенчатый (лат. Cycas pectinata) — вечнозелёное древовидное растение рода Саговник.

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篦齿苏铁 ( chinois )

fourni par wikipedia 中文维基百科
二名法 Cycas pectinata
Griff.

篦齿苏铁学名Cycas pectinata)是苏铁科苏铁属的植物。分布在缅甸印度泰国锡金尼泊尔老挝柬埔寨越南以及中国大陆云南昆明等地,生长于海拔1,210米的地区,多生长在石灰岩山坡或杂木林中,目前尚未由人工引种栽培。[1]

异名

  • Cycas pectinata Griff. ssp. manhaoensis C. Chen et P. Yun

参考文献

  1. ^ 昆明植物研究所. 篦齿苏铁. 《中国高等植物数据库全库》. 中国科学院微生物研究所. [2009-02-24]. (原始内容存档于2016-03-05).

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篦齿苏铁: Brief Summary ( chinois )

fourni par wikipedia 中文维基百科

篦齿苏铁(学名:Cycas pectinata)是苏铁科苏铁属的植物。分布在缅甸印度泰国锡金尼泊尔老挝柬埔寨越南以及中国大陆云南昆明等地,生长于海拔1,210米的地区,多生长在石灰岩山坡或杂木林中,目前尚未由人工引种栽培。

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