The bicolor unit — homology and transformation of an inflorescence structure unique to coreMalvales

@article{Bayer2004TheBU,
  title={The bicolor unit — homology and transformation of an inflorescence structure unique to coreMalvales},
  author={Clemens Bayer},
  journal={Plant Systematics and Evolution},
  year={2004},
  volume={214},
  pages={187-198}
}
  • C. Bayer
  • Published 1 March 1999
  • Biology
  • Plant Systematics and Evolution
A broad comparative analysis reveals that the inflorescences of coreMalvales, familiesSterculiaceae, Tiliaceae, Bombacaceae andMalvaceae, include characteristic repeating units. The basic repeating unit is called bicolor unit (afterTheobroma bicolor, where it was first observed). It is determinate and bears three bracts, one of which is invariably sterile, whereas the others subtend lateral cymes or single flowers. Through the demonstration of intermediate steps in closely related taxa the… 
View on Springer
24 Citations
Highly Influential Citations
4
Background Citations
8
Methods Citations
1
Results Citations
1

24 Citations

Citation Type

Citation Type

Floral development of Lavatera trimestris and Malva hispanica reveals the nature of the epicalyx in the Malva generic alliance
TLDR
The predominantly trimerous structure and leafy morphology of the epicalyx suggest its origin from a former subtending leaf with leaf-like stipules, which is close relatives but show contrasting morphologies of Lavatera trimestris and Malva hispanica.
The morphology and relationships of the Sphaerosepalaceae (Malvales)
TLDR
The extremely well-developed apical septum in the eusyncarpous gynoecium of Rhopalocarpus suggests that the gynoterminal style present in this genus has been secondarily derived from an ancestor with a fully syncarpous, basistylous gynaecium, as in Dialyceras.
Floral development and anatomy of Dirachma socotrana, (Dirachmaceae): a controversial member of the Rosales
TLDR
Several characters are unique to Dirachma and support a family Dirachmaceae separate from Rhamnaceae, which is suggested that the solitary flowers are derived from compound cymose inflorescences.
Cladistic analysis of some taxa in Malvaceae s.l. “Core Malvales” based on anatomical characteristics -
TLDR
The results of the phylogenetic analysis conducted from the cladogram (rooted tree) based on 44 anatomical characters and 111 character states strongly support the monophyly of family Malvaceae s.l. while, the other three families are para- or polyphyletic.
On the relevance of molecular tools for taxonomic revision in Malvales, Malvaceae s.l., and Dombeyoideae.
TLDR
An overview of changes to the taxonomy of Malvales is presented, and three possible taxonomic schemes as part of an ongoing revision of the Mascarene Dombeyoideae are proposed.
Multiple colonizations from Madagascar and converged acquisition of dioecy in the Mascarene Dombeyoideae (Malvaceae) as inferred from chloroplast and nuclear DNA sequence analyses.
TLDR
The phylogenetic relationships were reconstructed to clarify the taxonomy, understand the phylogeographic pattern of relationships and infer the evolution of the breeding systems for the Mascarenes Dombeyoideae.
Systematics of Dombeyoideae (Malvaceae) in the Mascarene archipelago (Indian Ocean) inferred from morphology.
TLDR
The evolutionary history of two lineages of Mascarene Domeyoideae seems to be related to adaption to xeric habitats, which suggests that dioecy has been acquired several times during colonization events from Madagascar to the MASCarene archipelago.
Phylogenetic analysis of the Malvadendrina clade (Malvaceae s.l.) based on plastid DNA sequences
The classification and geography of the flowering plants: Dicotyledons of the class Angiospermae
  • R. Thorne
  • Geography, Biology
    The Botanical Review
  • 2008
TLDR
This latest revision of the classification and geography of the Dicotyledons is necessitated by the plethora of new information that has become available about the classification of the Angiospermae, especially in the currently popular approaches of cladistic, particulate, and molecular taxonomy.
Identification of double/twin bolled and bicolor unit ‘cluster’ in Gossypium hirsutum L. cotton
TLDR
Another spontaneous mutant of Gossypium hirsutum having more than three appendages originating from primordia is observed, early in maturity by 10–15 days, naked seeded and possesses comparable agronomic characters with normal plants.
...
...

References

SHOWING 1-10 OF 39 REFERENCES
Inflorescence morphology of some Australian Lasiopeta leae (Stercu I iaceae)
TLDR
Not only in comparative morphological studies, but also in taxonomic descriptions, a clear and precise terminology for the analysis of inflorescence characters should be used, as the one elaborated by Troll (1964), Weberling 1989 or Briggs & Johnson (1979).
A CRITICAL REVISION OF CERTAIN TAXONOMIC GROUPS OF THE MALVALES
TLDR
It will be seen that the Malvales are well defined by characters other than purely floristic ones; they form a very natural order.
Morphology of the androecium in Malvales
In order to test the applicability of the telome and the classic theories to the nature of stamens a study was made of flowers in Malvaceae, Bombacaceae, Sterculiaceae, Tiliaceae, and Elaeocarpaceae…
Pollen morphology of the family Bombacaceae
CHATTAWAYA (STERCULIACEAE): A NEW GENUS OF WOOD FROM THE EOCENE OF OREGON AND ITS IMPLICATIONS FOR XYLEM EVOLUTION OF THE EXTANT GENUS PTEROSPERMUM
TLDR
Ch Chattawaya is part of a growing body of paleobotanical evidence indicating that the Sterculiaceae was well differentiated by the early Tertiary, but that the lineages leading to extant genera have undergone an appreciable amount of evolutionary change since the Eocene.
Circumscription of the Malvales and relationships to other Rosidae: evidence from rbcL sequence data.
TLDR
A two-step parsimony analysis on 125 rbcL sequences to clarify the composition of Malvales, to determine the relationships of some controversial families, and to identify the placement of the MalVales within Rosidae strongly support the monophyly of the core malvalean families.
General aspects of angiosperm evolution and macrosystematics
TLDR
It is concluded that pleiomerous flowers with helically arranged parts (corresponding to the Magnolia type, though probably less elaborate), on the basis of recent evidence can still be regarded as the probably earliest floral type in angiosperms.
Diversity and classification of flowering plants
The culmination of more than fifty years of research by the foremost living expert on plant classification, Diversity and Classification of Flowering Plants is an important contribution to the field…
Plastid rbc L sequence data indicate a close affinity between Diegodendron and Bixa
TLDR
Diegodendron humbertii Capuron (Diegodendraceae Capuron) is endemic to Madagascar and analysis of rbcL sequence data indicates a close re- lationship to Bixa.
Morphology of flowers and inflorescences
TLDR
The flower as a formal and functional entity - aspects of the biology of pollination and dispersal mechanisms of self- pollination mechanisms which facilitate cross-pollination the fruit (the flower at the stage when the seeds are ripe) infructescences.
...
...