Pollen types in Southern New World Convolvulaceae and their taxonomic significance

Pollen morphology from 143 collections representing 11 genera and 75 species of native South American Convolvulaceae was analyzed with LM and SEM. Exine structure and sculpture allow to distinguish three main types, in two of these types some subtypes were recognized. 1) Tectate, microechinate-perfo...

Full description

Saved in:
Bibliographic Details
Published inPlant systematics and evolution Vol. 243; no. 1/2; pp. 99 - 118
Main Authors Tellería, M.C., Daners, G.
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.11.2003
Springer Nature B.V
Subjects
Apertures
Biological taxonomies
Convolvulaceae
Data collection
Endemic species
Evolution
Genera
Indigenous species
Morphology
Optical focus
Phylogenetics
Plant morphology
Pollen
Taxa
Taxonomic significance
Terminology
Online AccessGet full text

Cover

More Information
Summary:Pollen morphology from 143 collections representing 11 genera and 75 species of native South American Convolvulaceae was analyzed with LM and SEM. Exine structure and sculpture allow to distinguish three main types, in two of these types some subtypes were recognized. 1) Tectate, microechinate-perforate exine, with ramified columellae. On the basis of apertures three subtypes were distinguished: tricolpate in Aniseia, Bonamia, Convolvulus, Cressa, Dichondra, Merremia and Jacquemontia blanchetii; penta-hexacolpate in Merremia umbellata; and pantoporate with elliptic and circular pores, in Calystegia. 2) Tectate, microechinate-perforate exine with microspines and single columellae in concordant pattern, relates pantocolpate pollen of Jacquemontia and Evolvulus. From pollen data generic status of J. blanchetii should be considered. 3) Semitectate, echinate or gemmate, microechinate-microreticulate exine with single columellae is exclusive of pantoporate pollen of Ipomoea. Four subtypes were recognized in this genera, which are discussed in relation to Austin's infrageneric classification.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-003-0069-z