Series Echinatae J.C.Manning & Klak, ser. nov. Type: T. echinata Aiton. Prostrate ± annual herbs. Flowers sessile or subsessile, solitary or in small groups. Stamens as many as and alternating with perianth segments, sometimes in pairs, or sometimes fewer. Ovary half­inferior. Fruit not winged, often with ridges or projections at top or sides. Species: T. acanthocarpa Adamson, T. caesia Adamson, T. echinata Aiton, T. microptera Fenzl Note: The accession identified as ‘ T. microptera (voucher Klak 2430, BOL)’ in Klak et al. (2017) was subsequently found to be misidentified, and true T. microptera was thus never included in the analysis. This species is therefore placed in series Echinatae based on the morphological characteristics that it shares with the other species in this series (Adamson 1955) .

Published as part of Manning, John & Klak, Cornelia, 2022, New infrageneric taxa in Leucospermum (Proteaceae) and Tetragonia L. (Aizoaceae) and a new name in Aizoon subgenus Galenia (Aizoaceae) in southern Africa, pp. 1-5 in Bothalia (a 11) (a 11) 52 (1) on page 4, DOI: 10.38201/btha.abc.v52.i1.11, http://zenodo.org/record/10515159