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Leavenworthia alabamica
Rollins
Family:
Brassicaceae
Alabama Gladecress
FNA
Resources
Ihsan A. Al-Shehbaz, James B. Beck in Flora of North America (vol. 7)
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.
2
n
= 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.
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