Resumo

ROITMAN, Germán  e  CASTILLO, Alberto. Calydorea minima (Iridaceae, Tigridieae) a new species from South America. Bol. Soc. Argent. Bot. [online]. 2007, vol.42, n.3-4, pp.321-323. ISSN 1851-2372.

Calydorea minima (Iridaceae, Tigridieae) is described from stony grasslands of northern, Argentina and Paraguay. The new species resembles Calydorea azurea , but it can be easily distinguished by its smaller habit (10- 15 cm vs. 25- 35 cm ), its smaller flowers with acute tepals (1.5- 2.2 cm diameter vs. 4.4- 5.3 cm diameter), and by its linear extremely narrow leaves (0.5- 0.7 mm vs 3 a 6 mm wide). A key, to identify the species of the genus from Argentina, Paraguay and Uruguay is provided.

Palavras-chave : Iridaceae; Tigridieae; Calydorea; South America.

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