Draba aprica
in J. K. Small, Fl. S.E. U.S. ed. 2, 1336, 1375. 1913.
Annuals; not scapose. Stems usually branched distally, (0.3–)0.7–3(–3.6) dm, pubescent throughout, trichomes short-stalked to subsessile, cruciform, 0.1–0.5 mm. Basal leaves not rosulate; petiolate; petiole (to 1 cm), ciliate throughout; blade obovate to spatulate or ovate to suborbicular, 0.6–2.5 cm × 3–10 mm, margins usually entire, rarely toothed, surfaces pubescent with stalked, cruciform trichomes, 0.1–0.5 mm. Cauline leaves (5–)8–20(–25); sessile; blade oblong to lanceolate, margins entire, (not ciliate), surfaces pubescent as basal. Racemes 7–46-flowered, ebracteate, elongated in fruit, (lateral racemes from axils of distalmost leaves subumbellate); rachis not flexuous, pubescent as stem. Fruiting pedicels horizontal to divaricate-ascending, straight, 2–5 mm, pubescent, trichomes subsessile, 4-rayed. Flowers: (late ones cleistogamous, apetalous); sepals oblong, 0.6–1.2 mm, pubescent; petals white, spatulate, 1.3–2.5 × 0.5–1 mm; anthers ovate, 0.1–0.2(–0.05 in cleistogamous flowers) mm. Fruits linear-ellipsoid to ellipsoid, plane, flattened, (3–)4–6 × 0.8–1.1 mm; valves pubescent, trichomes subsessile, (2–)4-rayed, 0.03–0.12 mm; ovules 4–6(–8) per ovary; style 0.07–0.13 mm. Seeds ovoid, 0.9–1.1 × 0.5–0.6 mm.
Phenology: Flowering Mar–May.
Habitat: Open knolls, rocky roadsides, rock outcrops, igneous glades, woods, alluvial areas near streams
Elevation: 100-400 m
Distribution
Ark., Ga., Mo., Okla., S.C.
Discussion
Selected References
None.