|Dicotyledon|| Literature for Veronica arvensis
Wagner et al., 1990, 1999.
|Plantaginaceae -- The Plantain Family||Bibliography|
Common name(s): speedwell, corn speedwell
|Distribution||Native to Eurasia, widely naturalized.In the Hawaiian Islands, naturalized on Moloka`i, Maui, Hawai`i.|
||Taprooted annual herbs; stems erect or decumbent at base, 0.5-2(-3) dm long, unbranched to branched, moderately to sparsely hirtellous and + puberulent.
||Leaves ovate to broadly ovate, 5-15(-20) mm long, 3-13 mm wide, sparsely to moderately hirtellous, margins crenate-serrate, apex rounded, base truncate to subcordate, petioles 0-3 mm long.
||Flowers solitary in the upper leaf axils, forming a terminal raceme, pedicels 0.5-1(-2) mm long, bracts narrowly elliptic to linear-elliptic, gradually becoming reduced; calyx 3-5 mm long, the lobes lanceolate, the upper pair longer than lower ones; corolla inconspicuous, blue to violet, 1-1.5 mm long.
||Capsules obcordate, strongly compressed, 2.5-3.5 mm long, 3-4 mm wide, the notch 0.5-0.8 mm deep, glandular puberulent along the margins.
||Seeds 8-12 per cell, 0.7-1 mm long.
||2n = 14, 16, 18