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FNA | Family List | FNA Vol. 7 | Brassicaceae | Paysonia

6. Paysonia lyrata (Rollins) O’Kane & Al-Shehbaz, Novon. 12: 381. 2002.

Lyrate or lyreleaf bladderpod

Lesquerella lyrata Rollins, Rhodora 57: 252, plate 1209. 1955

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.

Flowering Mar-Apr. Cedar glades, limestone hills, red soils, open pastures, disturbed soils of roadsides, bottom lands, old fields; of conservation concern; Ala.


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