The Centaurea parlatoris complex (Asteraceae): taxonomic checklist and typifications Author Domina, Gianniantonio 0000-0003-4184-398X Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze, bld. 4, 90128 Palermo, Italy. & gianniantonio. domina @ unipa. it; https: // orcid. org / 0000 - 0003 - 4184 - 398 X gianniantonio.domina@unipa.it Author Barone, Giulio 0000-0002-6345-3117 Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze, bld. 4, 90128 Palermo, Italy. & giulio. barone 01 @ unipa. it; https: // orcid. org / 0000 - 0002 - 6345 - 3117 giulio.barone01@unipa.it Author Gristina, Emilio Di 0000-0001-7603-3608 Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze, bld. 4, 90128 Palermo, Italy. & emilio. digristina @ unipa. it; https: // orcid. org / 0000 - 0001 - 7603 - 3608 emilio.digristina@unipa.it Author Raimondo, Francesco M. 0000-0001-8986-5163 PLANTA, Center for Research, Documentation and Training, Via Serraglio Vecchio 28, 90123 Palermo, Italy. raimondo @ centroplantapalermo. org; https: // orcid. org / 0000 - 0001 - 8986 - 5163 raimondo@centroplantapalermo.org text Phytotaxa 2021 2021-12-08 527 4 243 247 journal article 3067 10.11646/phytotaxa.527.4.1 be2730a8-26d1-4894-b45e-05e55a51cee6 1179-3163 5766167 Identification key 1. Capitula ovate, the upper ones 8–11 mm in diameter ..................................................................................................... C. gussonei – Capitula broadly oblong, the upper ones 6–7.5 mm in diameter ...................................................................................................... 2 2. Scapes branched from the base ......................................................................................................................................................... 3 – Scapes branched in the upper half .................................................................................................................................................... 4 3. Scapes and branches ascending, pappus 1/5 of the cypsela .......................................................................................... C. giardinae – Scapes reclining, branches forming an angle with the scape between 45° and 90°, pappus 1/3 of the cypsela ..... C. heywoodiana 4. Central appendage of the bracts twice as long as the lateral fimbriae; cypsela glabrous, pappus 1/5 of the cypsela ........ C. sicana – Central appendage of the bracts as long as the lateral fimbriae; cypsela hairy, pappus 1/3 of the cypsela ...................................... 5 5. Plant grey-tomentose; rosette and lower cauline leaves lyrate-pinnatifid ..................................................................... C. parlatoris – Plant green-lanuginose; rosette and lower cauline leaves bipinnatifid .......................................................................... C. virescens