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Magnoliopsida
Merremia Dennst. ex Endl.
EOL Text
Merremia
Bejucos volubles, con látex lechoso o acuoso, a veces con pelos glandulosos. Hojas alternas, pecioladas; láminas simples, palmatilobadas o palmaticompuestas; estípulas ausentes. Flores bisexuales, actinomorfas, 5-meras, solitarias o en cimas dicasiales compuestas, axilares; pedúnculos usualmente alargados. Cáliz usualmente acrescente, los sépalos iguales o desiguales; corola campanulada o infundibuliforme, el limbo entero o levemente 5-lobado; estambres insertos, los filamentos sub-iguales, las anteras lanceoladas, retorcidas después de abrir; ovario súpero, 2-locular, el estilo solitario con dos estigmas subglobosos. Frutos capsulares, ovoides a globosos, 4-valvados o irregularmente dehiscentes; semillas 4 por fruto, triangulares, glabras o aterciopeladas. Género pantropical con alrededor de 80 especies.
Merremia
Twining vines, with milky or watery latex, sometimes with glandular hairs. Leaves alternate, petiolate; blades simple, palmately lobed or compound; stipules absent. Flowers bisexual, actinomorphic, 5-merous, solitary or in compound dichasial cymes, axillary; peduncles usually elongate. Calyx usually accrescent, the sepals equal or unequal; corolla campanulate or infundibuliform, the limb entire or slightly 5-lobed; stamens inserted, the filaments subequal, the anthers lanceolate, twisted after opening; ovary superior, 2-locular, the style solitary, with two subglobose stigmas. Fruits capsular, ovoid to globose, 4-valvate or irregularly dehiscent; seeds 4 per fruit, triangular, glabrous or velvety. A pantropical genus of about 80 species.
Seed case protects from seawater: Mary's bean
The seed cases of Mary's Bean provide protection and keep seeds afloat as they drift on ocean currents.
"Protection from air and water: Seed cases are champions of air- and water-tight storage. Among the record-holders: a lotus that germinated after 1288 years, a Polynesian box fruit that germinated after two years at sea, and the Mary’s Bean, a liana seed which stayed afloat from the Marshall Islands to the beaches of Norway, more than 15,000 miles!" (Biomimicry Guild unpublished report)
Learn more about this functional adaptation.
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Rights holder/Author | (c) 2008-2009 The Biomimicry Institute |
Source | http://www.asknature.org/strategy/981e8f41430e5be7643da8fe8013467c |
United States
Origin: Exotic
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Merremia+tuberosa |
Barcode of Life Data Systems (BOLD) Stats
Specimen Records:49
Specimens with Sequences:54
Specimens with Barcodes:53
Species:15
Species With Barcodes:14
Public Records:23
Public Species:9
Public BINs:0
Distribución: Planta ornamental, a veces naturalizada en áreas alteradas. También en St. Croix y St. John. Nativa de América tropical pero se encuentra ampliamente distribuida a través de los trópicos.
Distribution: Ornamental plant, sometimes naturalized in disturbed areas. Also on St. Croix and St. John. Native to tropical America but found widely distributed throughout the tropics.
Merremia is a genus of flowering plants in the morning glory family, Convolvulaceae. Members of the genus are commonly known as woodroses.[3]
Selected species[edit]
- This list comes from various sources: species names[1][4][5] are in italics, followed by their respective binomial authorities (the botanists who named them), with common names,[3] if any, in grey; red asterisks (*) refer to corresponding notes at the bottom of the list.
- M. aegyptia (L.) Urb. – hairy woodrose
- M. aturensis (Kunth) Hallier f.
- M. aurea (Kellogg) O'Donell
- M. austinii McDonald
- M. bipinnatipartita Hallier f.
- M. boisiana (Gagnep.) Ooststr.
- M. bracteata P.S.Bacon
- M. caloxantha (Diels) Staples & R.C.Fang
- M. cissoides (Lam.) Hallier f. – roadside woodrose
- M. collina S.Y.Liu
- M. contorquens (Choisy) Hallier f.
- M. cordata C.Y.Wu & R.C.Fang
- M. decurrens (Hand.-Mazz.) H.S.Kiu *
- M. digitata (Spreng.) Hallier f.
- M. discoidesperma (Donn.Sm.) O'Donell
- M. dissecta (Jacq.) Hallier f. – noyau vine
- M. eberhardtii (Gagnep.) T.N.Nguyen **
- M. emarginata (Burm.f.) Hallier f.
- M. flagellaris (Choisy) O'Donell
- M. gemella (Burm.f.) Hallier f.
- M. grandiflora Ooststr.
- M. guerichii A.Meeuse
- M. hainanensis H.S.Kiu
- M. hassleriana (Chodat) Hassl.
- M. hederacea (Burm.f.) Hallier f. (type) – ivy woodrose
- M. hirta (L.) Merr.
- M. hungaiensis (Lingelsh. & Borza) R.C.Fang
- M. kentrocaulos Rendle
- M. kingii (Prain) Kerr
- M. longipedunculata (C.Y.Wu) R.C.Fang
- M. macdonaldii S.Valencia & Mart.Gord. ***
- M. macrocalyx (Ruiz & Pav.) O'Donell
- M. malvifolia Rendle
- M. mammosa (Lour.) Hallier f.
- M. maypurensis Hallier f.
- M. medium (L.) Hallier f.
- M. pacifica Ooststr.
- M. palmeri (S.Watson) Hallier f. ****
- M. peltata (L.) Merr.
- M. pierrei (Gagnep.) P.H.Hô
- M. pinnata (Hochst. ex Choisy) Hallier f.
- M. platyphylla (Fernald) O'Donell
- M. pterygocaulos (Choisy) Hallier f.
- M. quinata (R.Br.) Ooststr.
- M. quinquefolia (L.) Hallier f. – rock rosemary
- M. sibirica (L.) Hallier f.
- M. similis Elmer
- M. subsessilis (Courchet & Gagnep.) T.N.Nguyen **
- M. ternifoliola Pittier
- M. tonkinensis (Gagnep.) T.N.Nguyen **
- M. tridentata (L.) Hallier f.
- M. tuberosa (L.) Rendle – Spanish arborvine, wood rose
- M. umbellata (L.) Hallier f. – hogvine
- M. verecunda Rendle
- M. verruculosa S.Y.Liu
- M. vitifolia (Burm.f.) Hallier f.
- M. weberbaueri Ooststr.
- M. wurdackii D.F.Austin & Staples
- M. yunnanensis (Courchet & Gagnep.) R.C.Fang
* Author is H.S.Kiu per IPNI, corrected from H.X.Qiu at TPL
** Author is T.N.Nguyen per IPNI, corrected from N.T.Nhan at TPL
*** Author is Mart.Gord. per IPNI, corrected from Martínez-Gordillo at TPL
**** The author (in parenthesis) of the basionym of M. palmeri (Ipomoea palmeri) may be either S.Watson (according to ars-grin.gov), or Hallier (according to tropicos.org and theplantlist.org)
Formerly placed here[edit]
- Operculina turpethum (L.) Silva Manso (as M. turpethum (L.) Rendle)
- Xenostegia medium (L.) D.F.Austin & Staples (as M. medium (L.) Hallier f.)
- Xenostegia tridentata (L.) D.F.Austin & Staples (as M. tridentata (L.) Hallier f.)[5]
References[edit]
- ^ a b The genus Merremia was originally described and published in Genera Plantarum 18: 1403. 1841. "Name - !Merremia Dennst. ex Endl.". Tropicos. Saint Louis, Missouri: Missouri Botanical Garden (MOBOT). Retrieved January 7, 2013. "Type Specimens: T: Merremia hederacea (Burm.f.) Hallier f."
- ^ a b GRIN (October 5, 2007). "Merremia information from NPGS/GRIN". Taxonomy for Plants. National Germplasm Resources Laboratory, Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Retrieved January 7, 2013. "Comment: conserved (nom. cons.) against the heterotypic synonyms (Vienna ICBN Art. 14.4 & App. III) Operculina Silva Manso, nom. rej. & the heterotypic synonym Camonea Raf., nom. rej."
- ^ a b "Merremia". Integrated Taxonomic Information System. Retrieved 2011-04-12.
- ^ "TPL, treatment of Merremia". The Plant List; Version 1. (published on the internet). Royal Botanic Gardens, Kew and MOBOT. 2010. Retrieved January 7, 2013.
- ^ a b GRIN. "Species in GRIN for genus Merremia". Taxonomy for Plants. USDA, ARS, National Genetic Resources Program. Retrieved January 7, 2013.
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Rights holder/Author | Wikipedia |
Source | http://en.wikipedia.org/w/index.php?title=Merremia&oldid=626353879 |
Merremia tuberosa (L.) Rendle
BASÓNIMO: Ipomoea tuberosa L.
Bejuco leñoso, trepador voluble de 10-15 m de largo, con abundante látex lechoso. Tallos gruesos, cilíndricos, glabros. Hojas alternas; láminas simples, 7-12 × 6-11 cm, 7-palmatilobadas, los lóbulos, elípticos, largamente acuminados en el ápice, la base cordiforme, los márgenes revolutos, levemente sinuados; haz verde obscuro poco lustroso, glabro, con la nervación hundida; envés verde pálido, opaco, glabro o puberulento, con la nervación amarillenta, prominente; pecíolos tan largo como la lámina, cilíndricos, glabros o puberulentos. Flores funcionalmente unisexuales, solitarias o en dicasios simples. Cáliz verde amarillento, los sépalos desiguales, 2-3 cm de largo, carnosos, acrescentes y lignecentes una vez formado el fruto; corola amarilla, infundibuliforme, 4-5 cm de largo, el limbo 4-5 cm de diámetro; estambres exertos, las anteras blancas; estigma bilobado, verde, exerto. Cápsulas ovoides, abriendo irregularmente, 1.5-2.5 cm de largo, marrón claro, con los sépalos persistentes y acrescentes en la base; semillas 4 por fruto, negras, obtusamente trigonas, 1-1.5 cm de largo, aterciopeladas.
Fenología: Florece de octubre a diciembre y fructifica de noviembre a marzo.
Estatus: Exótica, cultivada y naturalizada, poco común.
Especimenes Estudiados: Acevedo-Rdgz., P. 5352; Liogier, A.H. 31166.