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Compilation
Nasturtium limosum

3 Images see all

Holotype of Nasturtium limosum Nutt. [family BRASSICACEAE]
Filed as Nasturtium limosum Nutt. [family BRASSICACEAE]
Filed as Nasturtium limosum Nutt. [family BRASSICACEAE]
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Name

Identification
Nasturtium limosum Nutt. [family BRASSICACEAE ] (stored under name); Verified by Not on sheet, Nasturtium limosum Nutt. [family BRASSICACEAE ] Verified by T. Nuttall, Rorippa islandica (Oeder ex Murray) Borbas [family BRASSICACEAE ] Verified by R.L. Stuckey, 1965
Related name
  • Nasturtium limosum
  • Rorippa teres
  • Rorippa islandica

Flora

Entry for Rorippa sessiliflora (Nuttall) Hitchcock [family CRUCIFERAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 7,
Names
Rorippa sessiliflora (Nuttall) Hitchcock [family CRUCIFERAE], Key Spring Fl. Manhattan, 18. 1894
Nasturtium sessiliflorum Nuttall [family CRUCIFERAE], in J. Torrey and A. Gray, Fl. N. Amer., 1: 73. 1838
Nasturtium limosum Nuttall [family CRUCIFERAE]
Radicula limosa (Nuttall) Greene [family ]
Radicula sessiliflora (Nuttall) Greene [family ]
Past names
Roripa
Treatment Author(s)
Ihsan A. Al-Shehbaz
Information
Annuals; glabrous throughout. Stems (simple or several-branched from base) erect, branched distally, (0.9–)2–4.5(–6.3) dm. Basal leaves not rosulate; blade margins dentate. Cauline leaves shortly petiolate or sessile; blade oblong or oblanceolate to obovate, 1.5–7(–13.3) cm × (5–)10–28(–50) mm, (lateral lobes much smaller than terminal), base auriculate or not, margins dentate or less frequently sinuate, or (lateral lobes) denticulate or entire. Racemes considerably elongated. Fruiting pedicels divaricate-ascending to horizontal, straight, 0.5–2(–4) mm, (slender or stout). Flowers: sepals ascending to spreading, ovate, 1.2–2 × 0.5–0.8 mm; petals absent; median filaments 1–1.6 mm; anthers ovate, 0.2–0.3 mm. Fruits siliques, straight or curved, oblong to oblong-linear, (4–)6–9(–12) × (1.4–)1.8–2.8(–3.5) mm; ovules 158–242 per ovary; style 0.1–0.5 mm. Seeds biseriate, yellow-brown, cordiform, 0.4–0.5 mm, foveolate. 2n = 16.
Phenology
mar-may (spring), jun-aug (summer), sep-oct (fall)
Altitude range
0–300 m;
Distribution
USA Ala.USA Ark.USA D.C.USA Fla.USA Ga.USA Ill.USA Ind.USA IowaUSA Kans.USA Ky.USA La.USA Mass.USA Miss.USA Mo.USA Nebr.USA N.C.USA OhioUSA Okla.USA S.C.USA S.Dak.USA Tenn.USA Tex.USA Va.USA Wis.
Discussion
Both R. L. Stuckey (1972) and R. C. Rollins (1993) indicated that Rorippa sessiliflora has strongly saccate sepals, but all specimens that I examined failed to show any sign of this character. The species is very distinctive and can easily be distinguished by an absence of petals and by having fruiting pedicels 0.5–2(–4) mm.

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