Tall Roadside Weed With Purple or Yellow Flowers

This page is the CodyCross answer for the clue below from Space Exploration, Group 907, Puzzle 5 (Safe Landing).

Question is: Tall Roadside Weed With Purple or Yellow Flowers

and the answer is: TOADFLAX

Word Meaning:

TOADFLAX — Any of several European plants, of the genus Linaria, having two-lipped yellow flowers.

Definitions from Wiktionary.