Scientific NameLinaria canadensis
Other Common Names:
Synonyms (former Scientific Names):
Grows from 6-24 inches tall and blooms from April to September.
Stems are up to 50 cm tall, erect, single or multiple from base, and typically simple or branching. Leaves of flowering stems are alternate, linear, and wispy, up to 3.5 cm long and 3 mm wide, with margins slightly thickened.
It is identified by its irregular blue flowers, its small thin leaves, and its basal spurs.
Flower Seed Head
Flowers are 1/4-1/2 inch long, pale blue-purple with lighter palate, small, on top of slender stalks, spurred, pubescent internally. Upper lip erect, 2-lobed, and 5-6mm long. Lower lip 8mm long, 1.3cm broad, glabrous, and 3lobed. Lobes to 3mm long, 1mm broad (in flower), linear-oblong, acute, green, glandular pubescent.
Fruits are capsules 3mm long and broad, many seeded, and glabrous.
Dry, sandy, or rocky soil, abandoned fields, roadsides, open ground, glades, bluffs, prairies, and railroads.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
Stem Cross Section
round or oval