A Comparative Histogenetic Study of the Bud Scales and Foliage Leaves of Viburnum Opulus

Cross, G. L.

doi:10.1002/j.1537-2197.1938.tb09215.x

Cited by 25 publications

(4 citation statements)

References 17 publications

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“…Viburnum has long been noted for the presence of naked buds in some species (e.g., V. lantanoides in eastern North America; widely cultivated Asian species, such as V. rhytidophyllum and V. carlesii Hemsl.). In plants with naked buds, the outer pair of organs in the bud expand into fully developed leaves, in contrast with most viburnums in which there are differentiated bud scales that dehisce when the shoot expands (Cross, 1937, 1938). Based on this fundamental distinction, the “naked” condition is somewhat more widespread than once imagined and includes species in which the organs forming the outer envelope are not especially leaf‐like in bud.…”

Section: Resultsmentioning

confidence: 99%

A chloroplast tree for Viburnum (Adoxaceae) and its implications for phylogenetic classification and character evolution

Clement

Arakaki

Sweeney

et al. 2014

American J of Botany

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• Premise of the study: Despite recent progress, significant uncertainties remain concerning relationships among early-branching lineages within Viburnum (Adoxaceae), prohibiting a new classification and hindering studies of character evolution and the increasing use of Viburnum in addressing a wide range of ecological and evolutionary questions. We hoped to resolve these issues by sequencing whole plastid genomes for representative species and combining these with molecular data previously obtained from an expanded taxon sample.• Methods: We performed paired-end Illumina sequencing of plastid genomes of 22 Viburnum species and combined these data with a 10-gene data set to infer phylogenetic relationships for 113 species. We used the results to devise a comprehensive phylogenetic classification and to analyze the evolution of eight morphological characters that vary among early-branching lineages.• Key results: With greatly increased levels of confidence in most of the early branches, we propose a phylogenetic classification of Viburnum, providing formal phylogenetic definitions for 30 clades, including 13 with names recognized under the International Code of Nomenclature for Algae, Fungi, and Plants, eight with previously proposed informal names, and nine newly proposed names for major branches. Our parsimony reconstructions of bud structure, leaf margins, inflorescence form, ruminate endosperm, extrafloral nectaries, glandular trichomes, palisade anatomy, and pollen exine showed varying levels of homoplasy, but collectively provided morphological support for some, though not all, of the major clades.• Conclusions: Our study demonstrates the value of next-generation plastid sequencing, the ease of creating a formal phylogenetic classification, and the utility of such a system in describing patterns of character evolution.

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Section: Resultsmentioning

confidence: 99%

A chloroplast tree for Viburnum (Adoxaceae) and its implications for phylogenetic classification and character evolution

Clement

Arakaki

Sweeney

et al. 2014

American J of Botany

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“…Similar variability of origin of mesophyll has been . 295 reported in the marginal growth for other species (Cross, 1937(Cross, , 1938(Cross, , 1940Gifford, 1951;Pray, 19550). No variation in the modes of origin of the mesophyll was observed in either Cercis or Prunus but fewer leaves of these species were examined than of Acer.…”

Section: The Derivation Of the Tissues Of The Leafmentioning

confidence: 99%

LEAF DEVELOPMENT IN RELATION TO VENATION, AS SHOWN IN CERCIS SILIQUASTRUM L. PRUNUS SERRULATA LINDL. AND ACER PSEUDOPLATANUS L.

Slade

1957

New Phytologist

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“…Although the general morphology of fruits and flowers is relatively uniform within Viburnum, various polymorphic characters have allowed botanists to set up a sectional classification (Oersted 1861;Rehder 1940;Donoghue 1983aDonoghue , 1983bHara 1983). Endocarp shape, structure of winter buds, and presence of extrafloral nectaries are examples of traits that are most useful in sectional delimitation (Cross 1938;Wilkinson 1948;Donoghue 1983aDonoghue , 1983b. The structure and development of the ovary, as well as the anatomy and morphology of the fruit, probably distinguish Viburnum the most from related genera (Wilkinson 1948;Fukuoka 1972).…”

Section: Introductionmentioning

confidence: 99%

Evolution and Phylogenetic Importance of Endocarp and Seed Characters inViburnum(Adoxaceae)

Jacobs¹,

Donoghue

Bouman

et al. 2008

International Journal of Plant Sciences

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Recent phylogenetic analyses based on molecular markers have resulted in a solid phylogeny of Viburnum with 12 well-defined clades. This has allowed us to focus on character evolution, endocarp and seed characters in particular. Members of Viburnum bear drupes that differ considerably between clades. Characters such as pyrene shape and grooving, number of fibrous layers, seed coat anatomy, and seed rumination are phylogenetically highly valuable. Our results largely agree with the results based on molecular data and provide several additional insights. The position of V. clemensae as sister to the rest of Viburnum is supported by several characters. The early diversification of V. clemensae might explain its highly derived features. Furthermore, our results give an indication of the possible paraphyly of the Megalotinus clade, confirm the paraphyly of Hara's section Solenotinus, and support the split of Hara's section Odontotinus into four well-defined clades. Endocarp and seed characters are mainly useful at the level of individual clades. Several characters, however, are useful at higher taxonomic levels. The presence of small, amorphous crystals in the endosperm, for example, is most likely to be apomorphic for Viburnum within the order Dipsacales.

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A Comparative Histogenetic Study of the Bud Scales and Foliage Leaves of Viburnum Opulus

Cited by 25 publications

References 17 publications

A chloroplast tree for Viburnum (Adoxaceae) and its implications for phylogenetic classification and character evolution

A chloroplast tree for Viburnum (Adoxaceae) and its implications for phylogenetic classification and character evolution

LEAF DEVELOPMENT IN RELATION TO VENATION, AS SHOWN IN CERCIS SILIQUASTRUM L. PRUNUS SERRULATA LINDL. AND ACER PSEUDOPLATANUS L.

Evolution and Phylogenetic Importance of Endocarp and Seed Characters inViburnum(Adoxaceae)

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