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Potentilla astracanica subsp. pirotensis (Borbás) Sojak
Пиротски очиболец

syn.: Potentilla pirotensis (Borbás) Markova

150 .. 500 m
·V·VI·VII·
·V·VI·VII·
20-50 cm. По каменливи и храсталачни места. . 150 .. 500 m. V-VII.