《Flora of North America》|| Brassicaceae || Nasturtium || Nasturtium officinale
1. Nasturtium officinale W. T. Aiton in W. Aiton and W. T. Aiton, Hortus Kew. 4: 110. 1812.
Sisymbrium nasturtium-aquaticum Linnaeus, Sp. Pl. 2: 657. 1753; Rorippa nasturtium-aquaticum (Linnaeus) Hayek
Plants glabrous throughout or sparsely pubescent. Stems 1-11 (-20) dm. Cauline leaves: petiole not winged, base auriculate; blade 3-9(-13)-foliolate, (1-) 2-15(-22) cm; lateral leaflets sessile or petiolulate, rachis not winged, blade smaller than terminal; terminal leaflet (or simple blade) suborbicular to ovate, or oblong to lanceolate, (0.4-)1-4(-5) cm × (3-)7-25(-40) mm, base obtuse, cuneate, or subcordate, margins entire or repand, apex obtuse. Fruiting pedicels divaricate or descending, straight or recurved, 5-17(-24) mm. Flowers: sepals 2-3.5 × 0.9-1.6 mm; petals white or pink, spatulate or obovate, 2.8-4.5(-6) × 1.5-2.5 mm, (base to 1 mm), apex rounded; filaments 2-3.5 mm; anthers 0.6-1 mm. Fruits (0.6-)1-1.8(-2.5) cm × (1.8-)2-2.5(-3) mm; ovules (28-)36-60 per ovary; style 0.5-1(-1.5) mm. Seeds biseriate, reddish brown, ovoid, (0.8-)0.9-1.1 (-1.3) × (0.6-)0.7-0.9(-1) mm, coarsely reticulate with 25-50(-60) areolae on each side. 2n = 32.
Flowering Feb-Sep. Flowing streams, ditches, lake margins, swamps, marshes, seeps; 0-3000 m; introduced; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que.; Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Europe; Asia; n Africa; introduced also elsewhere in the New World, tropical and s Africa, Australia.
数据来源 eFloras.org
《Flora of China》|| Brassicaceae || Nasturtium ||豆瓣菜 Nasturtium officinale
1. Nasturtium officinale R. Brown in W. T. Aiton, Hortus Kew. 4: 110. 1812.
豆瓣菜 dou ban cai
Sisymbrium nasturtium-aquaticum Linnaeus, Sp. Pl. 2: 657. 1753; Rorippa nasturtium-aquaticum (Linnaeus) Hayek.
Herbs perennial, rhizomatous, aquatic, 10-70(-200) cm tall, glabrous throughout or sparsely pubescent with simple trichomes. Stems decumbent or prostrate, erect in emergent plants, branched above, rooting at proximal nodes. Leaves all cauline, pinnately compound, 3-9(-13)-foliolate; petiole auriculate at base; terminal leaflet suborbicular or oblong, 1-4 cm, base obtuse, cuneate, or subcordate, margin entire or repand, apex obtuse; lateral leaflets smaller, usually sessile. Fruiting pedicels slender, divaricate or recurved, 5-12(-20) mm. Sepals oblong, 2-3.5 mm, lateral pair slightly saccate. Petals white or pink, spatulate or obovate, 2.8-4.5(-6) × 1.5-25 mm, apex rounded; claw ca. 1 mm. Filaments white, 2-3.5 mm; anthers oblong, ca. 0.6 mm. Fruit cylindric, 1-1.5(-2) cm × (1.8-)2-2.5(-3) mm; valves with an obscure midvein; style 0.5-1(-1.5) mm. Seeds biseriate, ovoid, 1-1.3 × 0.7-1 mm, reddish brown, coarsely reticulate, with 25-50(-60) areolae on each side. Fl. Apr-Sep, fr. May-Sep. 2n = 32*.
Streams, ditches, lakes, swamps, marshes; near sea level to 3700 m. Anhui, Guangdong, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan [native to SW Asia and Europe; widely naturalized elsewhere].
Cultivated as a vegetable and used medicinally.
数据来源 eFloras.org
