YELLOW TOADFLAX, Linaria
vulgaris Hill. 1, entire plant; 2, single flower.
Perennial, reproducing by seeds and rootstocks. Stems leafy,
with very few branches, smooth, 1 to 2 feet (30 to 60 cm) tall, often in
clumps, pale green. Leaves mostly alternate, narrow, smooth, pale
green. Flowers snapdragonlike, about 1 inch (2.5 cm) long, bright
yellow with deep orange center, in racemes at top of stems. Seeds
dark brown or black, round, flattened, warty, numerous, in a 2-celled pod.
Found in circular patches in native pastures, roadsides, and waste
places, and along railroads. Sometimes cultivated in gardens, from which
it escapes. Rather persistent under cultivation.