Tropaeolum majus L., Sp. Pl. 345. 1753; Bailey, Man. Cult. Pl. 602. f. 99. 1949.

Stems branched, climbing. Leaves peltate, 7 - 9 cm across; petioles 7 - 19 cm long. Flowers ca 3 cm long, in different shades of orange and yellow. Sepals 5, 10 - 15 mm long, connate at base, usually petaloid, posterior ones produced below into a long pointed spur. Petals 5, oblanceolate to orbicular, entire or undulate; anterior 3 small or usually clawed, claws with ciliate margins at base; posterior 2 perigynous and large, situated and attached to base of spur. Stamens, 8 in two rows on each side of ovary; anthers basifixed, 2-celled, oblong, 3 mm long. Ovary 3-lobed, 3-locular; owles pendulous, one in each locule; placentation axile; style apical, simple; stigma 3, unequal, linear.

Fl. & Fr. Dec. - Jan.

Cultivated as an ornamental plant.