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

Autor:	Sylvia Feuer
Rok vydání:	1990
Předmět:	Old World Morphology (linguistics) biology Embothrium Plant Science biology.organism_classification medicine.disease_cause Proteaceae Oreocallis Pollen Botany Oblate spheroid medicine Ecology Evolution Behavior and Systematics Aperture (botany)
Zdroj:	Grana. 29:19-36
ISSN:	1651-2049 0017-3134
DOI:	10.1080/00173139009429974
Popis:	This is the second of two papers dealing with pollen morphology and evolution within the tribe Embothrieae. The present paper examines pollen of the subtribe Embothriinae, Embothrium (1 sp.), Oreocallis (6 spp.), Telopea (4 spp.)) in the light microscope and scanning and transmission electron microscopes. Pollen is large-sized, oblate to suboblate to oblate-spheroidal, foveolate to microreticulate to spinulate with a predominantly granular exine and simple aperture morphology. The Embothriinae are palynologically heterogeneous with both Oreocallis and Telopea each exhibiting two distinct pollen types. Pollen of New World Oreocallis (O. grandiflora, O. mucronala) and the Old World O. pinnata are closer to the Old World Telopea (excluding T. speciosissima) than to other Old World Oreocallis (O. sp. nov. O. brachycarpa, O. wickhamii). Within this complex, O. pinnata occupies an intermediate position between Oreocallis and Telopea. Despite the uniformly biporate condition in Embothrium, other pollen ...
Databáze:	OpenAIRE
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