Difference between revisions of "Rorippa microtitis"
Rhodora 59: 71. 1957.
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|tribe=Brassicaceae tribe Cardamineae | |tribe=Brassicaceae tribe Cardamineae | ||
|genus=Rorippa | |genus=Rorippa | ||
Revision as of 00:00, 28 May 2020
Annuals or, rarely, biennials; usually glabrous throughout, rarely sparsely pubescent proximally. Stems (simple or few from base), erect, branched distally, 1.5–6 dm. Basal leaves often not rosulate; blade margins pinnatifid. Cauline leaves petiolate; blade pinnatifid to pinnatisect or pectinate, (lobes 4–10 on each side, linear or oblong to ovate), 4–13 cm × 9–35 mm; base auriculate, margins entire or dentate, or (distally) pinnately lobed. Racemes (subumbellate), considerably elongated. Fruiting pedicels divaricate-ascending to horizontal, straight, 3–11 mm. Flowers: sepals ascending to spreading, oblong, 2–3 × 0.7–1 mm; petals (spreading), yellow, spatulate, 2.5–4 × 0.7–1.2mm; median filaments 1.8–3 mm; anthers oblong, 0.5–0.8 mm. Fruits siliques, usually curved inward, rarely straight, linear, (8–)10–17(–20) × 1–2 mm; ovules 42–68 per ovary; style 0.5–1(–1.2) mm. Seeds biseriate, reddish brown, cordiform, 0.6–0.9 mm (0.5–0.6 mm diam.), reticulate-foveolate.
Phenology: Flowering Jun–Aug.
Habitat: Wet pastures, moist fields, ponds, ditches, meadows
Elevation: 1700-2300 m
Distribution
Ariz., N.Mex., Mexico (Chihuahua).
Discussion
Selected References
None.