Compositae

Anderberg, Arne A.; Baldwin, Bruce G.; Bayer, Rachel; Breitwieser, J.; Jeffrey, C.; Dillon, Michael O.; Eldenäs, Pia; Funk, Vicki A.; Garcia‐Jacas, Núria; Hind, D. J. N.; Karis, Per Ola; Lack, Hans-Walter; Nesom, G L; Nordenstam, B.; Oberprieler, Ch.; Panero, José Luis Calleja; Puttock, Christopher F.; Robinson, Harold; Stuessy, Tod F.; Susanna, Alfonso; Urtubey, Estrella; Vogt, Robert; Ward, Josephine M.; Watson, Linda E.

doi:10.1007/978-3-540-31051-8_7

Cited by 76 publications

(70 citation statements)

References 241 publications

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“…Achenes in Anacyclus vary from winged dorsiventrally flattened achenes to unwinged, from the outer to inner positions of the capitulum. Similar winged achenes are found in other Asteraceae (Anderberg & al., 2007;Manchester & O'Leary, 2010), mostly in the tribes Calenduleae (Garuleum, Norlindhia, Tripteris, etc. ) and Heliantheae (Silphium, Verbesina, Wedelia, etc.).…”

Section: Introductionsupporting

confidence: 60%

Not only size matters: achene morphology affects time of seedling emergence in three heterocarpic species of <i>Anacyclus</i> (Anthemideae, Asteraceae)

Torices

Agudo

Álvarez

2013

Anal. Jard. Bot. Madr.

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Torices, R., Agudo, A. & Álvarez, I. 2013. Not only size matters: achene morphology affects time of seedling emergence in three heterocarpic species of Anacyclus (Anthemideae, Asteraceae). Anales Jard. Bot. Madrid 70(1): 48-55.The production of two or more distinct fruit types by an individual, i.e. heterocarpy, is considered as a mixed dispersal strategy in which a proportion of the offspring is able to colonize new sites, whilst others remain near the maternal location. Here, we aimed to explore the effects of achene morphology (winged vs. unwinged achenes) and achene size -measured here as achene mass-on post-dispersal life-history traits (probability and time of seedling emergence) in three heterocarpic Anacyclus species (Anthemideae, Asteraceae). Morphology, size and germination performance were studied in achenes from six populations of Anacyclus clavatus (Desf.) Pers., A. homogamos (Maire) Humphries, and A. valentinus L. Our results show that achene morphology and size were related to their position within the capitulum, such that outer, winged achenes were significantly heavier than the inner, unwinged ones. Additionally, winged achenes germinated faster than unwinged ones. This pattern may be related to the sequential achene time of release displayed by these species. Finally, our findings cast doubt on the role of wings as structures that favor dispersal by wind in these three species of Anacyclus. Keywords: bet-hedging, Compositae, heterocarpy, mixed strategy, position effects, weeds, winged fruits. ResumenTorices, R., Agudo, A. & Álvarez, I. 2013. No sólo importa el tamaño: la morfología del aquenio afecta al tiempo de emergencia de la plántula en tres especies heterocárpicas de Anacyclus (Anthemideae, Asteraceae). Anales Jard. Bot. Madrid 70(1): 48-55 (en inglés).La producción de dos o más tipos de frutos diferentes por un mismo individuo, i.e. heterocarpia, es considerada como una estrategia mixta de dispersión en la que una parte de la descendencia es capaz de colonizar nuevos sitios, mientras que la otra permanece cerca de la planta madre. En este trabajo, nuestro objetivo fue explorar los efectos de la morfología del aquenio (aquenios alados vs. no alados) y de su tamaño -medido aquí como masa del aquenio-en la etapa del ciclo de vida siguiente a la dispersión (probabilidad de germinación y tiempo de emergencia de las plántulas) de tres especies heterocárpicas del género Anacyclus (Anthemideae, Asteraceae). Se estudió la morfología, el tamaño y la germinación en aquenios de seis poblaciones de Anacyclus clavatus (Desf.) Pers., A. homogamos (Maire) Humphries y A. valentinus L. Nuestros resultados indican que tanto la morfología del aquenio como su tamaño estaban relacionados con su posición en el capítulo, de manera que los aquenios más externos -aladoseran significativamente más pesados que los internos -sin alas-. Además, los aquenios alados germinaron más rápidamente que los no alados. Este patrón puede estar relacionado con la liberación secuencial de los aquenios que ocurre en estas ...

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Section: Introductionsupporting

confidence: 60%

Not only size matters: achene morphology affects time of seedling emergence in three heterocarpic species of <i>Anacyclus</i> (Anthemideae, Asteraceae)

Torices

Agudo

Álvarez

2013

Anal. Jard. Bot. Madr.

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“…As identificações foram realizadas por meio de análise de caracteres vegetativos e reprodutivos, utilizando literaturas especializadas (e.g., Baker 1873Baker , 1876Baker , 1882Baker , 1884Bautista 1987;King & Robinson 1987;Barroso et al 1991;Hind 1995;Santos 2001;Anderberg et al 2007;Roque et al 2012), protólogos, comparação com material herborizado e imagens de espécimes tipo depositados nos herbários disponíveis online. Ainda são escassos levantamentos florísticos em áreas de caatinga, sobretudo com espécies de Asteraceae.…”

Section: Methodsunclassified

Asteraceae da Ecorregião Raso da Catarina, Bahia, Brasil

Amorim

Bautista

2016

Rodriguésia

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ResumoNo Brasil são referidas para Asteraceae 2.065 espécies distribuídas em 278 gêneros, sendo a terceira maior família das angiospermas no país. O Raso da Catarina é uma das ecorregiões do domínio Caatinga, caracterizada pelo clima quente e seco e uma caatinga arbustiva densa. O objetivo do presente estudo foi realizar o levantamento florístico de Asteraceae da Ecorregião Raso da Catarina, discutir o ambiente de ocorrência e apresentar uma chave de identificação para as espécies. Foram realizadas 17 expedições mensais a campo no período de abril/2012 a agosto/2013 e análise das coleções dos herbários: ALCB, BAH, CEPEC, HRB, HUEFS e HUNEB. A família foi representada por 52 espécies, 41 gêneros e 14 tribos. Em ordem de riqueza, representam a diversidade local de Asteraceae as tribos: Vernonieae (11 spp.), Heliantheae (10 spp.), Eupatorieae (9 spp.), Tageteae (5 spp.), Astereae (4 spp.), Senecioneae (3 spp.), Gnaphalieae e Millerieae (2 spp.) cada, Cichorieae, Coriopsideae, Gochnatieae, Inuleae, Nassauvieae e Neurolaene (1 spp.) cada. Os gêneros mais representativos foram Lepidaploa, Pectis e Trichogonia, com três espécies cada. Sete espécies são endêmicas de Caatinga. O hábito herbáceo é predominante e as espécies encontradas ocorrem principalmente na caatinga aberta. Palavras-chave: caatinga, Compositae, florística, semiarido. AbstractThe Asteraceae represent the third largest family of flowering plants in Brazil comprising 2.070 species distributed in 280 genera. Raso da Catarina is an ecoregion in the Caatinga domain characterized by warm and dry climate and a schruby xeric vegetation. The current study aims (1) to survey the Asteraceae flora in Raso da Catarina; (2) to discuss environmental occurrence and (3) to provide an identification key. Samples were collected during 17 monthly expeditions from April/2012 to August/2013 and analyzed in the following herbaria collections: ALCB, BAH, CEPEC, HRB, HUEFS and HUNEB. The family was represented in the region by 52 species, 42 genera and 14 tribes. In order of richness, the local diversity of Asteraceae is presented by the tribes: Vernonieae (11 spp.), Heliantheae (10 spp.), Eupatorieae (9 spp.), Tageteae (5 spp.), Astereae (4 spp.), Senecioneae (3 spp.), Gnaphalieae, and Millerieae (2 spp.), Cichorieae, Coriopsideae, Gochnatieae, Inuleae, Nassauvieae e Neurolaene (1 spp.) each. The most representative genera were Lepidaploa, Pectis and Trichogonia, with three species each. Seven species are endemic to Caatinga. The herbaceous habit is predominant among the species, which occurs mainly in less schruby open caatinga.

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“…includes between 30 and 45 species distributed mainly throughout Europe, Russia, Iran, and from India to western China (Ling et al, 1985;Nesom & Robinson, 2007;Tzvelev, 1959). Its main centre of diversity is located within Eastern Europe and Russia.…”

Section: Introductionmentioning

confidence: 99%

“…Its main centre of diversity is located within Eastern Europe and Russia. Although main systematic studies of the tribe invariably argued for the independence of the genus Galatella with respect to the genus Aster (Ling et al, 1985;Nesom, 1994a,b;Nesom & Robinson, 2007;Tzvelev, 1959), this viewpoint remains debatable in regional and national floras of Europe and Asia (Brouillet et al, 2009;Ekim, 2012;Ignatov, 2014;Nesom & Robinson, 2007).…”

Section: Introductionmentioning

confidence: 99%

Abundance dynamics of endangered plant species Galatella rossica (Asteraceae) in the Republic of Mordovia (Central Russia): short report

2017

Arnaldoa

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Compositae

Cited by 76 publications

References 241 publications

Not only size matters: achene morphology affects time of seedling emergence in three heterocarpic species of <i>Anacyclus</i> (Anthemideae, Asteraceae)

Not only size matters: achene morphology affects time of seedling emergence in three heterocarpic species of <i>Anacyclus</i> (Anthemideae, Asteraceae)

Asteraceae da Ecorregião Raso da Catarina, Bahia, Brasil

Abundance dynamics of endangered plant species Galatella rossica (Asteraceae) in the Republic of Mordovia (Central Russia): short report

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