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Family: Gentianaceae
Arizona centaury, more, canchalagua, Buckley's centaury
[Centaurium arizonicum (A. Gray) Heller, more, Centaurium breviflorum , Centaurium calycosum var. arizonicum (A. Gray) Tidestrom, Centaurium calycosum var. breviflorum , Centaurium calycosum var. calycosum (Buckl.) Fern., Centaurium calycosum var. nanum (A. Gray) B.L. Robins., Erythraea calycosa , Erythraea calycosa var. arizonica A. Gray]
 E. Makings 
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Plant: Annual herb; stems simple or branched at the base, to 70 cm tall, the upper portion often angled and winged
Leaves: opposite and sessile, or petioled and in basal rosettes, glabrous, 2-5 cm long, lanceolate to ovate; basal rosette common
Inflorescence: cymose
Flowers: pedicellate; calyx lobes 7-12 mm long, the tube ca. 1 mm long; corolla pink, rarely white, marcescent, the tube 12-20 mm long, the lobes lanceolate, 8-12 mm long
Fruit: cylindric capsules, 8-14 mm long; SEEDS oblong to spherical, finely reticulate
Misc: In moist soil and stream beds; 300-1850 m (1000-6100 ft; Feb-Nov
References: W. B. McDougal. Seed plants of Northern Arizona.
J.C. Hickman, ed. The Jepson Manual.
ASU specimens.
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