Cyathocline

Anderberg, Arne A. & Bengtson, Annika, 2022, Taxonomic novelties in the Asteraceae-Inuleae with the description of a new genus, Galgera separate from Laggera, Willdenowia 52 (3), pp. 373-386 : 377

Cyathocline

Li & al. (2013) showed that Cyathocline purpurea ( Asteraceae – Astereae ) is not a member of the tribe and subtribe Astereae – Grangeinae ( Fayed 1979) but instead a member of Blumea of the tribe Inuleae . Cyathocline differs from all other taxa of this clade by having distinctly dissected leaves. Li & al. used trnL-F and ITS sequences but included only this one species of the genus. The authors consequently moved C. purpurea to Blumea under the name B. purpurea (Buch.-Ham. ex D. Don) W. P. Li , which unfortunately is a homonym antedated by B. purpurea DC. from 1836. We have here tested the position of Cyathocline in Blumea by analysing ndhF sequence data, and also by including a second species ( C. lutea ) in the analysis. Our results corroborate the conclusion of Li & al. (2013), because both C. purpurea and C. lutea were placed in the Blumea clade of the Inuleae – Inulinae ( Fig. 1). There are two further recognized species of Cyathocline (not seen by us), viz. C. manilaliana C. P. Raju & R. R. V. Raju from India, which is said to resemble C. purpurea , and C. birmanica Gand. from Myanmar, said to resemble C. lyrata Cass. (now a synonym of C. purpurea ). Most likely, both these species belong to the same clade as C. purpurea and C. lutea found here. The new combination Blumea lutea (J. S. Law ex Wight) K. C. Mohan has already been published for C. lutea , but because Li’s combination B. purpurea is illegitimate (as a later homonym), a new name is required. Among the many synonyms of C. purpurea , many have epithets that have already been used for Blumea species. Therefore, it seems that “ Tanacetum gratum Wall. ” and C. stricta DC. are the oldest available names that could be used. Both were published by Candolle, but “ T. gratum ” not validly so because it was merely cited as a synonym un- der C. lyrata . Therefore, we find that the oldest available basionym for the new combination in Blumea would be C. stricta .