Flora of the Hawaiian Islands
Dicotyledon Literature for Tropaeolum majus
Wagner et al., 1990, 1999.
   Tropaeolaceae -- The Nasturtium Family Bibliography
      Tropaeolum majus

Common name(s): nasturtium, garden nasturtium
General Information
DistributionNative to the Andes of South America, widely cultivated and with a number of cultivars.In the Hawaiian Islands, naturalized on Kaua`i, Moloka`i, Maui, Hawai`i.

Glabrous, somewhat succulent annual or short-lived perennial herbs; stems usually climbing.
Leaves peltate, orbicular or ± angled, 4-15 cm wide, ca. 9-nerved, lower surface papillose, margins entire to undulate, petioles 10-30 cm long or sometimes more.
Flowers yellow, orange, reddish orange, or red, sometimes striped and spotted, 2.5-6 cm long, spur 2.5-3 cm long, straight or curved, the lower petals deeply fringed on the claw, apex of petals usually rounded.
2n = 24, 28