Pollination Processes in Idiospermum australiense (Calycanthaceae), an arborescent basal angiosperm of Australia’s Tropical Rain Forests

@article{Worboys2004PollinationPI,
  title={Pollination Processes in Idiospermum australiense (Calycanthaceae), an arborescent basal angiosperm of Australia’s Tropical Rain Forests},
  author={S. Worboys and B. Jackes},
  journal={Plant Systematics and Evolution},
  year={2004},
  volume={251},
  pages={107-117}
}
Abstract.Idiospermum australiense (Diels) S.T. Blake, a rainforest canopy tree restricted to a few small populations in northeast Australia, is the only southern hemisphere representative of the Calycanthaceae. Pollination processes in Idiospermum were investigated. Flowers are protogynous, with some populations of the species being andromonoecious, whilst others are hermaphrodite. Over their 10 – 16 day floral lifespan, movements of floral organs enforced spatial and temporal separation of… Expand

Figures and Tables from this paper

Population genetic structuring in a rare tropical plant: Idiospermum australiense (Diels) S.T. Blake
TLDR
Although there is sufficient evidence in the data to suggest that gene dispersal is quite limited in the Idiospermum species, further investigation is still needed to yield more informative detail on additional factors, such as breeding and germination strategies and their potential influence over population structuring and diversity levels within each population and refugium. Expand
Floral attraction and flower visitors of a subcanopy, tropical rainforest tree, Fontainea picrosperma
TLDR
Study of the floral attractants and floral visitors of a dioecious, subcanopy tree, Fontainea picrosperma, in the Wet Tropics bioregion of northern Queensland, Australia found that wind pollination is rare and male and female flowers do not produce nectar. Expand
The evolution of floral biology in basal angiosperms
  • P. K. Endress
  • Biology, Medicine
  • Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2010
TLDR
In basal angiosperms (including ANITA grade, magnoliids, Choranthaceae, Ceratophyllaceae) almost all bisexual flowers are dichogamous, and nearly 100 per cent of those are protogynous (with female function before male function). Expand
Visitor assemblages at flowers in a tropical rainforest canopy
TLDR
Canopy crane-based studies have been carried out to quantify the sets of arthropods that visit the flowers of a suite of common species of trees, palms and vines within the Cape Tribulation study area, finding significant differences among species confirming that the visitor profile is a plant species-specific phenomenon. Expand
Visitor or vector? The extent of rove beetle (Coleoptera: Staphylinidae) pollination and floral interactions
TLDR
The role of Staphylinidae as pollinators, and Coleoptera as a whole, is underestimated, and caution must be given to inferring the role of staphyl inids in pollination because rove beetles commonly function as inadvertent secondary pollinators or antagonists there to fulfil other ecological roles. Expand
Floral Phyllotaxis and Floral Architecture in Calycanthaceae (Laurales)
TLDR
A comparative study of floral phyllotaxis of calycanthaceous fossil flowers, comprising species of all four genera of the family, found spiral floral phytotaxis is spiral according to the Fibonacci pattern for all species studied. Expand
Comparative Gynoecium Structure and Development in Calycanthaceae (Laurales)
TLDR
The lateral ovules position in Calycanthaceae is correlated with a different development of carpel closure as compared with core Laurales, which exhibit median ovule position, and the identity of “staminodes” (sterile organs between stamens and carpels) is discussed. Expand
Phylogeny, molecular dating and floral evolution of Magnoliidae (Angiospermae)
TLDR
The goal of this study was to provide new reliable calibration points in order to conduct molecular dating analyses and provide key results on the evolution of Magnoliidae and raises several new questions such as the impact of geological crises on diversification of the group or the influence of pollinators and the environment on the Evolution of floral morphology. Expand
The mechanism of stamen movement in Chimonanthus praecox (Calycanthaceae): differential cell growth rates on the adaxial and abaxial surfaces of filaments after flower opening
TLDR
It is concluded that in Chimonanthus the differential cell growth rates between the adaxial and abaxial surfaces of filaments could account for the gradual inward stamen movement following flower opening rather than cell division. Expand
Fruit Structure of Calycanthaceae (Laurales): Histology and Development
TLDR
The structure of the parenchymatous pericarp, which may be partly obliterated in fruiting carpels in berries of Idiospermoideae, is similar to that in some Atherospermataceae and Monimiaceae with a berry fruit type. Expand
...
1
2
...

References

SHOWING 1-10 OF 46 REFERENCES
The population structure and floral biology of Amborella trichopoda (Amborellaceae)
TLDR
Floral size dimorphism reported for this species was confirmed by differences in floral biomass, and Structural studies indicate that the stigma is of the dry-type, and the pollinators probably visit female flowers because of the mimetic role of the staminodes. Expand
New Perspectives on the Pollination Biology of Basal Angiosperms
Coleoptera and Diptera are the primary pollinators of extant basal angiosperms (wind pollination is rare); lineages of these insects were established by the Late Jurassic. Contemporary examples ofExpand
Floral biology and pollination of Bocageopsis multiflora and Oxandra euneura in Central Amazonia, with remarks on the evolution of stamens in Annonaceae†
TLDR
It is speculated that the stamens of these species could maintain their original laminar form with tongue-shaped prolongations because of the low selection pressure exerted by the non-destructive thrips and staphylinid beetles. Expand
FLORAL ANATOMY OF IDIOSPERMUM AUSTRALIENSE (IDIOSPERMACEAE)
TLDR
The vascular supply to the carpel of Idiospermum, while possibly a modification of that of the carpels of Calycanthus, could also be interpreted as having an independent origin and other differences and resemblances are described. Expand
Pollen movement to flowering canopies of pistillate individuals of three rain forest tree species in tropical Australia
TLDR
Larger quantities of pollen were mobilized during peak flowering times although the greatest quantities were transferred to pistillate canopies towards the end of the population flowering periods. Expand
Morphological and functional flower characteristics of New and Old World Annonaceae with respect to their mode of pollination
TLDR
The Annonaceae show a broader flower biological radiation than originally thought, with flowers being pollinated not only by beetles, but also by thrips, flies and even bees, while no dynastid-flower relationship has evolved in Asia and Australia. Expand
Some Aspects of Beetle Pollination in the Evolution of Flowering Plants
TLDR
Cantharophily is no longer a sign of primitiveness as it is in the Magnoliidae and to some extent probably also in secondarily polyandrous groups, but a relatively recent adaptation into a still existing ecological niche. Expand
FLORAL BIOLOGY OF MAGNOLIA
TLDR
The floral biology of eight species of Magniolia native to the United States is described and it is suggested that the flowers of Magnolia are highly specialized for exclusive pollination by beetles. Expand
Biotic pollination mechanisms in the Australian flora — a review
TLDR
Critical examination of recorded feeding habits of the Australian coleopteran and dipteran faunas reveals that at least 28 of the 121 co-opteran families and 44 of the 87 Dipteran families contain anthophilous species. Expand
POLLEN‐OVULE RATIOS: A CONSERVATIVE INDICATOR OF BREEDING SYSTEMS IN FLOWERING PLANTS
  • R. Cruden
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1977
TLDR
The overall objective is to show that PIO's reflect the likelihood of sufficient pollen grains reaching each stigma to result in maximum seed set and suggest that PI O's are integrated with other facets of a plant's breeding system. Expand
...
1
2
3
4
5
...