(1):
(a.) The euphorbiaceous plant Chrozophora tinctoria.
(2):
(a.) Litmus.
(3):
(a.) A purple dye obtained from the plant turnsole. See def. 1 (d).
(4):
(a.) A kind of spurge (Euphorbia Helioscopia).
(5):
(a.) The sunflower.
(6):
(a.) A plant of the genus Heliotropium; heliotrope; - so named because its flowers are supposed to turn toward the sun.