Teesdalia nudicaulis
in W. Aiton and W. T. Aiton, Hortus Kew. 4: 83. 1812.
Stems 0.5–1.5(–2) dm. Basal leaves: petiole 0.5–2.5(–3.5) cm; blade oblanceolate to obovate in outline, 0.3–1.5(–2) cm × 2–4(–7) mm, margins usually lyrate-pinnatifid, rarely dentate or entire; lateral lobes obtuse. Cauline leaves 0–4; blade linear to oblong. Fruiting pedicels 3–7 mm. Flowers zygomorphic; sepals 0.5–0.8(–1) × 0.4–0.6(–0.8) mm; petals oblong to obovate, abaxial pair 1.5–2.5 × 0.6–1 mm, adaxial pair 0.5–1 × 0.3–0.4 mm; stamens 6, tetradynamous; filaments 0.8–1 mm, (basal appendage white, ca. 1/2 its length); anthers 0.1–0.2 mm. Fruits 3–4.5 × 3–4.5 mm; style ca. 0.1 mm. Seeds 1–1.2 × 0.9–1 mm. 2n = 36.
Phenology: Flowering Apr–Jun.
Habitat: Sandy areas along trails, near beaches, pine clearings, waste grounds, fields, roadsides, gravelly slopes
Elevation: 0-300 m
Distribution
B.C., Calif., Conn., Md., Mass., Mich., N.J., N.Y., N.C., Oreg., Pa., S.C., Va., Wash., Europe, Asia (Middle East), introduced also in South America (Chile), nw Africa, Australia.
Discussion
Selected References
None.