Modern plant morphological studies

Schönenberger, Jürg; Balthazar, Maria von

doi:10.1111/j.1095-8339.2012.01287.x

Cited by 14 publications

(13 citation statements)

References 41 publications

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“…Finally, we would like to point out that detailed higher level comparative structural studies, such as the present study, may also help to identify or at least broaden interesting hypotheses and questions in other research fields, such as molecular developmental genetics (evo‐devo) or pollination biology (see, for example, Schönenberger & von Balthazar, ). The balsaminoid clade appears to be a particularly rewarding group for evo‐devo studies, as it is structurally variable in several features of interest, including perianth differentiation (Geuten et al ., ), derived unitegmy (McAbee et al ., ) and floral symmetry (Jabbour, Nadot & Damerval, ).…”

Section: Discussionmentioning

confidence: 99%

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Balthazar

Schönenberger

2013

Bot J Linn Soc

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Based on molecular phylogenetic studies, Balsaminaceae, Tetrameristaceae (including Pellicieraceae) and Marcgraviaceae form the strongly supported first branching clade in the asterid order Ericales. Marcgraviaceae and Tetrameristaceae were proposed to be closely related in pre‐molecular studies, but the systematic position of Balsaminaceae has been controversial for some time and a relationship with the other two families was never suggested in pre‐molecular/pre‐cladistic times. However, interfamilial relationships in the clade are still unclear because of conflicting phylogenetic hypotheses from molecular analyses. In order to assess the validity of these molecular hypotheses from a morphological point of view, the floral morphology, anatomy and histology of Balsaminaceae, Tetrameristaceae and Marcgraviaceae are comparatively studied in detail. In addition, earlier literature is reviewed. The monophyly of the balsaminoid clade is strongly supported by floral structure, and a series of potential floral synapomorphies is identified for the clade. Prominent features shared by the three families include broad and dorsiventrally flattened filaments, thread‐like structures lining the stomia of dehisced anthers, secretory inner morphological surfaces of the gynoecium, ovules intermediate between uni‐ and bitegmic, incompletely tenuinucellar ovules, fruits with persistent style and stigma, seeds lacking endosperm and several anatomical/histological traits. The families are also distinctive because the bracts and/or sepals are petaloid and nectariferous. Further, the floral structure supports a sister group relationship between Balsaminaceae and Tetrameristaceae rather than any of the other possible interfamilial relationships. These two families share a caducous calyx, post‐genital fusion/coherence of filaments and ovary surface, latrorse anther dehiscence, commissural carpel lobes and ovules with a thickened funiculus and a constricted chalazal region. The occurrence of these features in Ericales is discussed. Future structural studies in other ericalean lineages and additional molecular studies are needed to further test these features with respect to their systematic value for the balsaminoid clade. Some may turn out to be true synapomorphies, whereas others may be recognized as plesiomorphies, as they may be more widely spread in Ericales than currently thought. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 325–386.

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Section: Discussionmentioning

confidence: 99%

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Balthazar

Schönenberger

2013

Bot J Linn Soc

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“…While the use of flower morphology as a primary taxonomic classification trait has been useful in angiosperms and often reflected phylogenetic relationships at many taxonomic levels accurately (Endress & Matthews, 2012;Schönenberger & Balthazar, 2012), the flower-based classification schemes of the past have created some taxonomic headaches vis-à-vis contemporary molecular phylogeny-based classification approaches (e.g., Stace, 2005;Endress & Matthews, 2012). This is especially apparent when broadly recognizable, iconic genera are revealed to be non-monophyletic (Frodin, 2004;Humphreys almost 1000 species with a virtually worldwide distribution, being notably absent from only Australia (1 species) and New Zealand.…”

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confidence: 99%

Salvia united: The greatest good for the greatest number

Drew

González-Gallegos²,

Xiang

et al. 2017

TAXON

167

171

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Previous molecular phylogenetic research, based on chloroplast and nuclear ribosomal DNA data, has demonstrated that the large genus Salvia (Lamiaceae) is paraphyletic as traditionally circumscribed. However, neither relationships within Salvia s.l. nor within subtribe Salviinae have been evaluated using low‐copy nuclear gene regions. Here, we use two low‐copy nuclear gene regions (PPR‐AT3G09060, GBSSI) to further assess relationships of Salvia and related genera within Salviinae. Our results largely confirm results from previous studies based on chloroplast and nuclear ribosomal DNA. Based upon the phylogenetic results presented here, previous phylogenetic studies, and taxonomic, morphological, and practical considerations, we conclude that the botanical community would be best served by maintaining a broadly defined Salvia, including the five small embedded genera Dorystaechas, Meriandra, Perovskia, Rosmarinus, and Zhumeria as Salvia species. We subsequently present an updated circumscription of Salvia.

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“…Por lo tanto, se pretende contribuir con la estandarización de términos agrostológicos, dado que hay una proliferación de palabras para la morfología de gramíneas, las cuales, en muchos casos, no son homólogas, y así, contribuir al esfuerzo indudablemente necesario de unificar los términos morfológicos y anatómicos en el contexto de Mayo, et al, (2008) Balthazar (2012). Los términos escritos en negrita corresponden a las formas castellanas adoptadas en la agrostología reciente (Giraldo-Cañas & Peterson, 2009a, 2009bGiraldo-Cañas, 2010, 2011b, 2012a, 2012b, 2012c, 2013bPeterson & Giraldo-Cañas, 2011.…”

Section: Estudios Exomorfológicosunclassified

Las especies del género Axonopus (Poaceae: Panicoideae: Paspaleae) de Colombia

Cañas¹

2014

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Axonopus es un género nativo del continente americano del cual se conocen unas 71 especies, principalmente concentradas en el norte de Sudamérica, con algunos representantes aparentemente introducidos en el Viejo Mundo. Se presenta el estudio morfológico y taxonómico de las especies colombianas, sus sinónimos, su descripción e iconografía, su distribución geográfica y ecológica, sus nombres vernáculos, sus usos, y se comentan algunas particularidades morfológicas, así como las relaciones morfológicas de las especies. Se discuten las afinidades morfológicas y filogenéticas con Digitaria, Mesosetum, Paspalum, Spheneria y Streptostachys. Se propone un nuevo nombre para Axonopus sect. Cabrera. Dos binomios se reducen a la sinonimia Axonopus piccae (

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Modern plant morphological studies

Cited by 14 publications

References 41 publications

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Salvia united: The greatest good for the greatest number

Las especies del género Axonopus (Poaceae: Panicoideae: Paspaleae) de Colombia

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