- blood flower, swallowwort, Asclepias curassavica - tropical herb having orange-red flowers followed by pods suggesting a swallow with outspread wings; a weed throughout the tropics
--1 is a kind of milkweed, silkweed
- celandine, greater celandine, swallowwort, swallow wort, Chelidonium majus - perennial herb with branched woody stock and bright yellow flowers
--2 is a kind of poppy
--2 is a member of Chelidonium, genus Chelidonium