Literature

[Full Bibliography]

• • • Zahn K. H. 1923: Compositae–Hieracium. Abteilung II. Sect. XL. Pilosellina – Sect. XLVII. Praealtina. — In: Engler A. (Ed.) 1921–1923: Das Pflanzenreich. Regni vegetabilis conspectus. IV. 280. (82. Heft) W. Engelmann, Leipzig. Pp. 1147–1705. [=> full text]

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