Psephellus avajiqensis (Asteraceae, Cardueae), a New Species from West Azerbaijan Province, NW Iran

Abstract

Psephellus avajiqensis Negaresh sp. nova (Asteraceae) is described and illustrated from West Azerbaijan Province, NW Iran. It resembles P. xanthocephalus subsp. xanthocephalus but differs from it by having a densely greyish-floccose-tomentose indumentum on both sides of leaves; undivided basal and lower cauline leaves; oblanceolate and wider median cauline leaves; hemispherical and wider involucres; denticulate and shiny white appendages; white flowers; shorter central floret; purplish achenes; and longer pappus. The chromosome number of P. avajiqensis, counted from root tips, is 2n = 2x = 30. © 2025 Finnish Zoological and Botanical Publishing Board. All rights reserved.