* Nuts wrinkled. L. arvense: annual; stems erect, branched, about a foot high, hoary with appressed hairs; leaves narrow-lanceolate or nearly linear; flowers small, white, sessile, in leafy terminal cymes; nuts conical, hard, deeply wrinkled. - Bastard Alkanet. - Cultivated and waste places. Fl. May, June.
** Nuts smooth. L. officinale: stem erect, branched, 1-1 1/2 foot high; leaves lanceolate; flowers small, yellowish white; nuts hard, white, very smooth and shining, without wrinkles. - Waste places, roadsides, etc. Fl. June to August.