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Ubisch body

Known as: orbicule 
A small, granular structure that is found in the extracellular matrix of cell of the secretory tapetal layer that surrounds developing pollen grains… 
National Institutes of Health

Papers overview

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2012
2012
Tapetum structure and ontogeny in Victoria (Nymphaeaceae)
Abstract The tapetum is critical for successful pollen development. Innovations in tapetum ontogeny and in the composition and… 
2008
2008
Phylogenetic relationships in Nartheciaceae (Dioscoreales), with focus on pollen and orbicule morphology
A molecular phylogenetic analysis of Nartheciaceae is presented, with nine species of the family's five genera. The main… 
2005
2005
A histological study of microsporogenesis in Tarenna gracilipes (Rubiaceae)
We studied the microsporogenesis in Tarenna gracilipes (Hayata) Ohwi, with special attention to the mode of exine deposition and… 
2004
2004
The remarkable genus Coptosapelta (Rubiaceae): pollen and orbicule morphology and systematic implications
The pollen morphology and distribution of orbicules were investigated in ten species of the genus Coptosapelta (Rubiaceae) using… 
1986
1986
Orbicules and the ektexine are homologous sporopollenin concretions inSpermatophyta
During microsporogenesis sporopollenin becomes accumulated independently by the only two sporopollenin-producing cell types in… 
1986
1986
An ultrastructural, cytochemical and immunofluorescence study of postmeiotic development of plasmodial tapetum inTradescantia virginiana L. and its relevance to the pathway of sporopollenin secretion
SummaryEstablishment of a tapetal plasmodium in postmeiotic stages in anther locules ofTradescantia virginiana encloses the… 
1977
1977
Differentiation of the tapetum in Avena. I. The cell surface.
The development of the tapetal cell surface and associated structures in Avena has been followed from cell formation to… 
1976
1976
An orbicular tonalite from Caldera, Chile
First known orbicular outcrop from Chile is described. The body, of Jurassic age, is dyke-like with an exposed surface area of… 
1974
1974
Petrography and protoclastic structures of the orbiculite boulders from Sääkslahti, Toivakka, Finland and the magmatic genesis of orbiculites
Firstly, two of the many orbiculite boulders found at Sääkslahti are described. The matrix of the orbiculites varies from diorite… 
1964
1964
Orbicule Formation Through Intrusive Brecciation and Compositional Reorganization
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