On cavities in spines of compositae pollen

Abstract

Spine cavities were studied with SEM, and the results compared with previous works using LM and TEM. Spine cavities are holes piercing the exine surface in the base of the spine, or they are internal cavities near its apex. Results indicate that these cavities are reliable morphological features, and they are species-dependent. The existence of a large internal space within the exine framework, and its connection with the external environment through cavities and other surface perforations is emphasized. It is thought to represent an important feature that should be studied in pollination and allergy research. © 1982, Taylor & Francis Group, LLC. All rights reserved.