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Leavenworthia alabamica Rollins
Family: Brassicaceae
Alabama Gladecress
Leavenworthia alabamica image
Stems (when present), 1-2.5 dm. Basal leaves: petiole (0.5-) 1-3 cm; blade (2-)3.5-8.5(-10) cm, lobes 1-9 on each side, margins entire or shallowly dentate, terminal lobe orbicular to broadly ovate, 0.5-1.3 cm × 5-13 mm, considerably larger than lateral lobes, margins entire or shallowly dentate. Fruiting pedicels: solitary flowers 40-100 mm; racemes 20-60 mm. Flowers: sepals widely spreading, oblong-linear, (3.5-) 4-6(-7) × 1-2 mm; petals spreading, white to lavender, obovate to broadly spatulate, 9-14 × (2.5-)3-6.5(-7.5) mm, claw yellow-orange, (2-)2.5-3.5 mm, apex deeply emarginate, apical notch 0.5-1 mm deep; filaments: median 3.5-6 mm, lateral 2-3.5 mm; anthers 1-1.5 mm. Fruits narrowly oblong, 1.5-3 cm × 3-4.5 mm, smooth, latiseptate; valves thin; ovules 6-12 per ovary; style 1.5-4.5 mm. Seeds 2.2-4 mm diam.; wing 0.2-0.5 mm wide; embryo straight. 2n = 22. Flowering Mar-Apr. Limestone outcrops and cedar glades, abandoned fields, pastures, rocky knolls, roadsides; of conservation concern; 150-300 m; Ala. Leavenworthia alabamica is known only from Colbert, Franklin, Lawrence, and Morgan counties.