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(Vol.13, 2010-12) Transfer Of Hymenoxys Argentea Var. Thoreauensis to Tetraneuris (Asteraceae: Helenieae: Tetraneuridinae)
Based on evidence supporting the recognition of Tetraneuris as a genus separate from Hymenoxys, Hymenoxys argentea var. thoreauensis is basionym of a new combination, Tetraneuris argentea var. thoreauensis.
(Vol.13, 2010-12) New Taxon in Psacalium (Asteraceae: Senecioneae) From Oaxaca, Mexico
A new peltate-leaved taxon of Psacalium, Psacalium putlanum, is described and illustrated from southwestern Oaxaca, Mexico. It appears to be closely related to the widespread P. peltigerum. Additionally, the closely related ...