Teesdalia nudicaulis (L.) R.Br.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Brassicaceae
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Scientific Name
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Description
Species Description - Pls glabrous or occasionally short-hairy; basal lvs spatulate in outline, 2–5 cm, lyrate-pinnatifid with rounded or obtuse lobes; cauline lvs none or much reduced; stems 0.5–2 dm; fls 2 mm wide; pet unequal, the 2 outer (abaxial) ones well surpassing the sep, the 2 inner half or two-thirds as long, about equaling the sep; stamens 6; fr 3–3.5 mm; style ca 0.1–0.2 mm; 2n=36. Native of Europe, now found here and there in the U.S. as a casual weed. Apr.–June.
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Discussion
Iberis amara L. and I. umbellata L., spp. of Candytuft, occasionally escape. They would key to Teesdalia because of their dissimilar pet and short frs flattened contrary to the septum, but they have well developed cauline lvs, longer (5–9 mm) frs, and larger (5–10 mm wide) fls. In I. amara the lvs have a few large teeth and the infl elongates after anthesis; in I. umbellata the lvs are entire and the infl remains short, forming a dense, umbel-like cluster in fr.