Pale blue, or purple.
Flowers: growing in a terminal raceme. Calyx: five-parted. Corolla: two lipped, closed in the throat, extending backward into a long pointed spur.
Stamens: four, in pairs of unequal length. Pistil: one. Leaves: those of the base, tufted; those of the stem, alternate; linear; sessile; parallel-veined. Stem: erect; leafy; smooth.
Along the sandy roadsides the blue linaria seems to be perfectly at home and happy. It comes early in the summer and remains until late in the autumn; enjoying the sunshine, the singing of the birds and the fun-loving urchins that know it so well. It can hardly be said to resemble very closely its near relative, the sprightly butter-and-eggs.
L. repens, pale-blue toad-flax, is a small species that is found about the Atlantic seaports. It has come to us from Europe.