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Pakistan | Family List | Brassicaceae | Rorippa

Rorippa islandica (Oeder) Borbas, Balaton Tav. 2:392. 1900. Schinz & Thell., Viert. Naturf. Gen. Zurich 53:538.1908; Clapham et al, l.c. 218; Goode & Cullen in Davis, l.c. 432; Hedge in Rech. f., l.c. 216.

Rorippa islandica

Credit: Shaukat & Azmat

  • Nasturtium palustre (L.) DC.
  • Rorippa palustris (Leyss.) Besser
  • Sisymbrium amphibium var. palustre L.
  • Sisymbrium islandicum Oeder
  • Sisymbrium palustre Leysser

    Annual or biennial herb, (10-) 20-70 cm tall, erect, branched, glabrous or slightly hairy below with simple hairs. Lower and middle leaves lyrate-pinnatifid,3-5-jugate, stalked, 5-15 cm long, 1-3 cm broad; terminal lobe subovate, sinuate-toothed; upper leaves deeply toothed to pinnatifid, 1.5-5 cm long, 5-20 mm broad. Racemes 20-30-flowered, up to 20 cm long in fruit. Flowers c. 2 mm across, pale yellow; pedicels up to 10 mm long (about as long as the fruit) in fruit, spreading. Sepals c. 2 mm long. Petals about as long as the sepals, 0.5 mm broad. Siliquae oblong-ellipsoid, 5-10 mm long, 2-3 mm broad, glabrous; style usually c. 1 mm long; seeds many, crowded, c. 0.5 mm in diam., pale brown.

    Fl. Per.: April-July.

    Type: Described from Europe, Denmark.

    Distribution: Europe and Temperate Asia; widely introduced.

    Sometimes thread-like basal nodal roots also develope.


    Related Objects  
  • Illustration (Shaukat & Azmat)
  • Image/JPEG

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