Resumen

BULACIO, Eva  y  AYARDE, Hugo. Aspectos ecológicos y distribución de Tropaeolum tuberosum ssp. silvestre (Tropaeolaceae) en Argentina. Bol. Soc. Argent. Bot. [online]. 2012, vol.47, n.1-2, pp. 97-101. ISSN 1851-2372.

Ecological features and distribution of Tropaeolum tuberosum ssp. silvestre (Tropaeolaceae) in Argentina. Tropaeolum tuberosum Ruiz et Pav. ssp. silvestre Sparre is a rhizomatous climbing herb that in Argentina was found in the Sierras of Calilegua (Jujuy) and Catamarca mountains, yet of this last locality only is known an one and incomplete specimen. It inhabits humid gorges, between 2100-2650 masl, in the upper limit of the montane forest. The slender stem reaches 3 meters in lenght and the underground portion shows elongated rhizomes up to 1 cm in diameter. These are the main differences with the ssp. tuberosum, in which the stem is shorter, erect and develop well-defned tubers.

Palabras llave : Tropaeolum tuberosum ssp. silvestre; Distribution; Habit; Tropaeolaceae.