Houstonia prostrata

Plant: annual herb; STEMS 1-3(-9) cm tall, slender Leaves: narrowly oblanceolate, linear, or narrowly elliptic, 5-14 mm long, 0.5-2.5 mm wide Flowers: apparently homostylous, solitary, subsessile or on pedicels to 1 mm long; corollas 1-2 mm long, funnelform or tubular, white or lobes purplish Fruit: FRUITS 2-3 mm long, 3-4 mm wide, 3/4 inferior, thin-walled, subsessile or on recurved pedicels ca. 1 mm long. SEEDS 0.8-1.2 mm long, boat-shaped, bent longitudinally, with linear hilar ridge in an oblong concavity Misc: gravel deposits on rock outcrop; Aug-Sep