Original Research

Pollen morphology of Curroria, Mondia, Socotranthus and Stomatostemma (Periplocaceae)

R. L. Verhoeven, H. J. T. Venter
Bothalia | Vol 23, No 1 | a795 | DOI: https://doi.org/10.4102/abc.v23i1.795 | © 1993 R. L. Verhoeven, H. J. T. Venter | This work is licensed under CC Attribution 4.0
Submitted: 10 October 1993 | Published: 10 October 1993

About the author(s)

R. L. Verhoeven, Department of Botany and Genetics, University of the Orange Free State, South Africa
H. J. T. Venter, Department of Botany and Genetics, University of the Orange Free State, South Africa

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Abstract

The pollen morphology of I Planch., O Skeels, Socotranthus Kuntze and Stomatostemma N.E. Br. was studied.All the genera are characterized by pollen grains arranged in tetrads. The arrangement of the grains may be rhomboidal, tetrahedral or decussate. The 4 - 6 pores present are restricted to the junction area of adjacent grains. The exine is smooth.Exine structure consists of an outer, homogeneous stratum (tectum) subtended by a granular stratum. The intine is well developed. The pollen grains of tetrads are connected by wall bridges (cross-wall cohesion). Except for small differences which may occur between species and genera in pollen size and arrangement of tetrads, the pollen is uniform in morphology.


Keywords

<i>Curroria</i>; <i>Mondia</i>, Periplocaceae, pollen morphology; <i>Socotranthus</i>; <i>Stomatostemma</i>

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Crossref Citations

1. Pollen Morphology of the Periplocaceae from Madagascar
Rudolf L. Verhoeven, Hendrik J. T. Venter
Grana  vol: 33  issue: 6  first page: 295  year: 1994  
doi: 10.1080/00173139409429016