Rorippa

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Rorippa

Description

Annual to perennial, small to rather tall herbs with a taproot, sometimes also with root-runners or adventive roots from the stem-nodes, practically glabrous to pubescent with simple, pointed hairs. Leaves membranous, usually pinnatifid to pinnate, often auriculate. Sepals greenish, elliptic, not saccate, spreading. Petals yellow or white, equalling or up to ± twice as long as the sepals. Stamens 6, distinctly tetradynamous, with usually linear filaments; Ovary spheroid to narrowly cylindrical, with numerous ovules. Fruits terete, very variable in shape (globose to narrowly linear), without or rarely with a very short gynophore, usually with a short but distinct style and flat to slightly bifid stigma, dehiscent by 2 valves with or without very fine midnerve. Seeds many to numerous, not mucilaginous, finely and variously sculptured, yellowish to dark brown, ellipsoid to spheroid, wingless, 0.5-1.5 mm diameter.

Citation

STUCKEY 1972 – In: Sida: 279
ENDL. 1839: Gen. Pl: 863
B. & H. 1862 – In: Gen. Pl.: 68
BAILLON 1871 – In: Hist. Pl.: 232
PRANTL 1891 – In: E. & P., Nat. Pfl. Fam. III: 184
JONSELL 1968 – In: Symb. Bot. Upsal.
SCHULZ 1936 – In: E. & P., Nat. Pfl. Fam., ed. 2, 17b: 551