Rorippa sphaerocarpa

(A. Gray) Britton

Mem. Torrey Bot. Club 5: 170. 1894.

Basionym: Nasturtium sphaerocarpum A. Gray Mem. Amer. Acad. Arts, n. s. 4: 6. 1849
Synonyms: Cardamine globosa var. sphaerocarpa (A. Gray) Kuntze Caroli-gmelina sylvestris (Linnaeus) P. Gaertner, B. Meyer & Scherbius Nasturtium obtusum var. sphaerocarpum (A. Gray) S. Watson Radicula obtusa var. sphaerocarpa (A. Gray) B. L. Robinson Radicula sphaerocarpa (A. Gray) Greene Rorippa obtusa var. sphaerocarpa (A. Gray) Cory
Treatment appears in FNA Volume 7. Treatment on page 504. Mentioned on page 495.

Annuals or, rarely, biennials; (terrestrial or of wet habitat, not submerged); glabrous or hirsute. Stems (simple or few- to many-branched from base), decumbent or erect, branched distally, 1–4(–5.5) dm, (hirsute proximally). Basal leaves rosulate; blade margins pinnatifid. Cauline leaves shortly petiolate or sessile; blade oblong to oblanceolate, (lateral lobes oblong to ovate), (3.5–)4.5–9(–12) cm × 10–25(–33) mm, (lateral lobes smaller than terminal), base auriculate or not, margins pinnatifid to pinnatisect, or (lateral lobes) crenate to subentire. Racemes elongated. Fruiting pedicels divaricate to slightly reflexed, straight or recurved, 1.5–3.7(–4.3) mm. Flowers: sepals ascending, oblong to ovate, 0.7–1.3 × 0.4–0.7 mm; petals yellow, oblanceolate to spatulate, 0.6–1.2 × 0.2–0.5 mm; median filaments 0.9–1.2 mm; anthers ovate, 0.2–0.3 mm. Fruits silicles, straight, globose or subglobose, 1.2–2.5(–3) mm diam.; valves glabrous; ovules 20–42 per ovary; style 0.1–0.7(–1) mm. Seeds biseriate, brown, cordiform, 0.5–0.7 mm, finely colliculate.

Phenology: Flowering May–Aug.
Habitat: Shores of ponds and lakes, mud flats, stream edges, moist grounds
Elevation: 1200-3300 m


V7 787-distribution-map.gif

Ariz., Calif., Colo., Idaho, N.Mex., Tex., Utah, Wyo., Mexico (Chihuahua).


Selected References


Lower Taxa

... more about "Rorippa sphaerocarpa"
Ihsan A. Al-Shehbaz +
(A. Gray) Britton +
Nasturtium sphaerocarpum +
Ariz. +, Calif. +, Colo. +, Idaho +, N.Mex. +, Tex. +, Utah +, Wyo. +  and Mexico (Chihuahua). +
1200-3300 m +
Shores of ponds and lakes, mud flats, stream edges, moist grounds +
Flowering May–Aug. +
Mem. Torrey Bot. Club +
Cardamine globosa var. sphaerocarpa +, Caroli-gmelina sylvestris +, Nasturtium obtusum var. sphaerocarpum +, Radicula obtusa var. sphaerocarpa +, Radicula sphaerocarpa +  and Rorippa obtusa var. sphaerocarpa +
Rorippa sphaerocarpa +
species +