Pollen morphology in theBoragineae (Boraginaceae) in relation to the taxonomy of the tribe

@article{Bigazzi2004PollenMI,
  title={Pollen morphology in theBoragineae (Boraginaceae) in relation to the taxonomy of the tribe},
  author={Massimo Bigazzi and Federico Selvi},
  journal={Plant Systematics and Evolution},
  year={2004},
  volume={213},
  pages={121-151}
}
The results of a comparative survey on pollen morphology in theBoragineae by means of light, scanning and transmission electron microscopy are presented and discussed in relation to the taxonomy of the tribe. Multivariate analyses lead to the recognition of 15 pollen morphotypes for which a discriminant key is proposed. The discriminatory characters concern mainly the stereostructural and ultrastructural features of the grains, such as tectum sculpture and aperture morphology, while the number… 

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References

SHOWING 1-10 OF 43 REFERENCES

Are the genera Hallea and Mitragyna (Rubiaceae-Coptosapelteae) pollen morphologically distinct?

TLDR
It is concluded that both Hallea and Mitragyna deserve generic recognition, but are not fully distinct pollen morphologically.

Pollen morphology of the tribes Eritrichieae and Cynoglosseae (Boraginaceae) in the Iberian Peninsula and its taxonomic significance

TLDR
The results confirm the eurypalinous character of this family, in which a large number of species can be recognized by their pollen characters, and the generic limits of Cynoglossum and the infrageneric classification of Myosotis are discussed.

A CORRELATION OF THE TAXONOMY AND THE FLORAL ANATOMY OF CERTAIN OF THE BORAGINACEAE

TLDR
In a study of the detailed anatomical features of the flowers it is of interest to find whether or not these classifications based on gross morphology can be supported or clarified.

A general survey of pollen types in Anchusa L. (Boraginaceae) in relation to taxonomy

TLDR
Sometimes, the pollen types correspond well with the genera segregated from Anchusa and pollen morphology is discussed in relation to the complex taxonomy of the group.

Pollen morphology of spanish lithospermum s.l. (boraginaceae) and its taxonomic significance

TLDR
The pollen morphology of 12 taxa belonging to four genera of Boraginaceae have been investigated by LM and SEM and the taxonomic implications of the pollen morphological features are discussed.

The ultimate types ofAnchusa L. and Lycopsis L. (Boraginaceae)

TLDR
The tribe Boragineae Bercht was regarded by Johnston (1924) as a natural group of the Boraginaceae, consisting of closely related genera showing reticulate variation of several significant characters, but one of the taxonomic problems concerns the delimitation of two Linnaean genera, Anchusa and Lycopsis.

Borago morisiana Bigazzi et Ricceri (Boraginaceae), a new species from Sardinia

TLDR
A new species of the genus Borago (B. morisiana) from the Island of S. Pietro off south-west Sardinia is described, similar to Borago pygmaea but from which it differs in morphological, karyological and ecological characteristics.

Application d'une méthodologie quantitative à la palynologie d'Eryngium maritimum (Umbelliferae)

TLDR
Quantitative methods (statistics and numerical taxonomy) were used for palynological studies of Eryngium maritimum from 13 localities extending from the Mediterranean to the North Sea, demonstrating the homogeneity of the size of the pollen grains in respect of P and E dimensions taken from a single inflorescence.