Pollen morphology of the Embothrieae (Proteaceae) II. Embothriinae (<i>Embothrium, Oreocallis, Telopea</i>)

Feuer, Sylvia

doi:10.1080/00173139009429974

Cited by 19 publications

(11 citation statements)

References 3 publications

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“…The genus Oreocallis was left to refer solely to the American species, making this genus the fifth endemic to South America. Pollen data supported the placement of the Old World Oreocallis in a separate generic rank (Feuer 1990). When Weston and Crisp's (1987) results were transcribed to show biogeographical associations, they revealed a closer relationship between Australia and the northern Andes than between it and southern South America (i.e.…”

Section: Embothrieaementioning

confidence: 72%

“…Pollen data have also shown that Embothrium, Oreocallis and Telopea are the more derived taxa within the tribe and that the two New World endemics, Embothrium and Oreocallis, are very closely related (Feuer 1990). However, there is nothing to suggest the relationship between Alloxylon, Telopea and Oreocallis.…”

Section: Embothrieaementioning

confidence: 91%

“…The Embothrieae are characterised by a chromosome number of 11, the loss of peduncle and floral bracts, and a 'complex modified postvestibulate aperture morphology' (Johnson and Briggs 1975;Feuer 1990), all of which are understood to be derived character states within the subfamily. It is divided into four subtribes: Stenocarpinae, Buckinghamiae, Embothriinae and Lomatiinae.…”

Section: Embothrieaementioning

confidence: 99%

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The American Proteaceae

Prance

Plana²

1998

Aust. Systematic Bot.

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The American Proteaceae are outliers from the main centres of diversity of the family in Australia and South Africa. There are about 83 species in eight genera which all belong to the monophyletic subfamily Grevilleoideae. Three genera, Embothrium, Oreocallis and Lomatia, are placed in the tribe Embothrieae (sensu Johnson and Briggs), four Euplassa, Gevuina, Panopsis and Roupala in the Macadamieae and the single genus Orites in the Oriteae. There are five genera endemic to America and three also have species in Australia and New Guinea (Gevuina, Lomatia and Orites). The Proteaceae appear to have arrived in South America via two routes. The larger genera Euplassa, Panopsis and Roupala, which are all endemic to America and have a general distribution in northern South America and south-eastern Brazil, are derived from Gondwanaland before it separated from South America. The remaining genera are distributed either in temperate South America or in the high Andes and appear to have arrived more recently via the Australia–Antarctica–South American connection. Three of these genera have species in both regions. The centres of species diversity of Euplassa, Panopsis and Roupala fall outside hypothesised forest refugia, indicating that they are not true rainforest species but species of seasonal habitats like those achieved at higher altitudes where they are commonly found. Two genera,Panopsis and Roupala, have reached Central America after the central American land bridge was formed six million years ago. The exact relationship to genera on other continents is still unclear and there is a need for a cladistic biogeographic analysis of the group based on both morphological and molecular data.

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Section: Embothrieaementioning

confidence: 72%

Section: Embothrieaementioning

confidence: 91%

Section: Embothrieaementioning

confidence: 99%

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The American Proteaceae

Prance

Plana²

1998

Aust. Systematic Bot.

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“…Although doubts were expressed (34,36) on the proteaceous identity of many Cretaceous pollen taxa, recent studies demonstrate that rigorous light-and electron-microscope comparisons between fossil and extant pollen provide a meaningful basis for establishing proteaceous relationships (15,34,35,42). Pollen in extant Proteaceae are eurypalynous, and they possess diverse forms of apertures, exine structures, and sculptural patterns (10,16,20,21,22,23,35). Our survey of the large collection in the Canadian Museum of Nature corroborates recent studies (20,21,22,23) that pollen types in many genera and species groups possess unique combinations of morphological characters.…”

mentioning

confidence: 98%

“…Pollen in extant Proteaceae are eurypalynous, and they possess diverse forms of apertures, exine structures, and sculptural patterns (10,16,20,21,22,23,35). Our survey of the large collection in the Canadian Museum of Nature corroborates recent studies (20,21,22,23) that pollen types in many genera and species groups possess unique combinations of morphological characters. Other morphological types are scattered amongst several tribes or occasionally occur in more than one subfamily Beauprea, Macadamia, Gevuina-Hicksbeachia, and Knightia have pollen that is morphologically distinctive and taxonomically definitive (16,34,42).…”

mentioning

confidence: 99%

Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests

Dettmann¹,

Jarzen²

1991

Can. J. Bot.

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Amongst diverse and abundant fossil proteaceous pollen in southeastern Australian Late Cretaceous (Campanian–Maastrichtian) sediments are forms identical with pollen of extant taxa within subfamilies Proteoideae, Persoonioideae, Carnarvonioideae, and Grevilleoideae. Taxa identified now have disparate geographic ranges within Australasia. Sclerophyllous Adenanthos and Stirlingia (Proteoideae) are restricted to the southern Australian Mediterranean climatic region; Persoonia (Persoonioideae) ranges into higher rainfall areas of eastern and northern Australia. Grevillea exul – Grevillea robusta and Telopea (Grevilleoideae) and Carnarvonia (Carnarvonioideae) occur in or fringe rain forests in eastern Australasia, as do other members (Macadamia, Gevuina–Hicksbeachia, Knightia, and Beauprea) reported previously. Pollen evidence thereby confirms evolution of both rain forest and sclerophyll members by the Campanian–Maastrichtian. Turnover of proteaceous pollen taxa near the Cretaceous–Tertiary boundary may reflect contemporaneous modifications to the proteaceous communities. Associated with the Late Cretaceous Proteaceae were diverse conifers (Microcachrys, Lagarostrobus, Podocarpus, Dacrydium, Dacrycarpus, and Araucariaceae), Nothofagus, Ilex, Gunnera, Ascarina, Winteraceae, Trimeniaceae, and probable Epacridaceae. The vegetation, which fringed a narrow estuary separating Antarctica from southern Australia, implies a mosaic of rain forest and sclerophyll communities but has no modern analogue. Key words: Proteaceae, Late Cretaceous, Australia, Antarctica.

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Proteaceae

Weston

2007

Flowering Plants · Eudicots

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Pollen morphology of the Embothrieae (Proteaceae) II. Embothriinae (Embothrium, Oreocallis, Telopea)

Cited by 19 publications

References 3 publications

The American Proteaceae

The American Proteaceae

Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests

Proteaceae

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