Abstract
Seed coat surfaces of 127 species, representing 23 sections of the genusEuphorbia L. (Euphorbiaceae) have been examined with the scanning electron microscope (SEM). Various surface patterns and cell wall structures are described. In some groups the seed coat is rather uniform (e.g. in sect.Euphorbium), in other sections even closely related species can be separated by seed coat morphology (e.g.Tithymalus). The taxonomic application of testa micromorphology and the possible systematic position of certain taxa are briefly discussed. The seed coat cells of all species in sect.Tithymalus show remarkable intercellulares filled with small particles, which are described in detail for the first time.
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Ehler, N. Mikromorphologie der Samenoberflächen der GattungEuphorbia . Pl Syst Evol 126, 189–207 (1976). https://doi.org/10.1007/BF00981670
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DOI: https://doi.org/10.1007/BF00981670