FIGURE 3. Type 2.3 exine. a) S. imparilis, exine surface, scale bar 3 μm; b) S. rufescens, exine surface showing pits, scale bar 3 μm; c) S. mertensiana, TEM of exine in cross-section, showing radial microchannels, scale bar 1 μm; d) S. imparilis, scale bar 1 μm; e) S. stolonifera, scale bar 2 μm; f) S. fortunei, TEM of exine in cross-section, showing radial microchannels, scale bar 1 μm.

Published as part of Zhang, Zhuoxin, Chen, Shilong & Gornall, Richard J., 2015, Morphology and anatomy of the exine in Saxifraga (Saxifragaceae), pp. 105-132 in Phytotaxa 212 (2) on page 117, DOI: 10.11646/phytotaxa.212.2.1, http://zenodo.org/record/13642906