[Hedyotis caerulea var. minima (Beck) Fosberg, moreHedyotis caerulea var. minor (Michx.) Torr. & A. Gray, Hedyotis crassifolia Raf., Hedyotis crassifolia var. micrantha Shinners, Hedyotis minima (Beck) Torr. & A.Gray, Houstonia minima Beck, Houstonia patens Ell.]
Plant: annual; STEMS 1.5-15(-25) cm tall, slender Leaves: usually elliptic, ovate, or spatulate, to 25 mm long, 0.5-5(-9) mm wide Flowers: homostylous, solitary on long erect or nodding pedicels to ca. 4 cm long; corollas 3.5-10(-12.5) mm long, salverform, usually purple or violet with reddish or brownish center Fruit: FRUITS 1.5-4 mm long, 2.5-6 mm wide, thin walled, 1/2 inferior. SEEDS 0.5-1 mm in diameter, subglobose, with a small orifice opening into a subglobose hilar cavity without a hilar ridge Misc: Grassy places, fields, in open or forested areas; 1000-1350 m (3300-4400 ft); Apr-May REFERENCES: Terrell, Edward E. 1995 Rubiaceae. Houstonia. J. Ariz. – Nev. Acad. Sci. 29(l): 36.