Annuals; hirsute or glabrous, trichomes simple proximally, simple, with branched, smaller ones distally. Stems erect, outer decumbent at base, 1-3 dm. Basal leaves: blade 2-7 cm × 6-15 mm, margins lyrate, (terminal lobes relatively large, orbicular to elliptic), surfaces hirsute (trichomes simple, or mixed with branched, smaller ones). Cauline leaves: blade ovate to broadly oblong, 0.5-2 cm × 4-10 mm, base auriculate, clasping, margins nearly entire or coarsely dentate, (apex obtuse, surfaces densely to sparsely hirsute, trichomes simple, or simple and branched). Fruiting pedicels divaricate-ascending, straight, 10-15 mm, densely pubescent. Flowers: sepals (spreading, yellowish at anthesis), 3-4 × 1.2-1.5 mm, (outer pair slightly saccate basally), pubescent; petals yellow, 5-7 × 3.5-4 mm, (claw relatively short), apex slightly rounded, truncate, or shallowly retuse; filaments dilated basally, (glandular tissue subtending paired stamens, surrounding single stamens). Fruits sessile, subglobose, (often slightly depressed at base of style and slightly didymous), 3-4 × 3-4 mm; valves glabrous; replum orbicular or suborbicular, slightly broader than high; septum complete, (opaque); ovules 4-8 per ovary; style 1-1.5 mm, glabrous; stigma not expanded, nearly same diameter as style. Seeds oval to suborbicular, 1.5-2.5 mm. 2n = 16.
Home