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Pakistan | Family List | Alismataceae | Alisma

Alisma gramineum Lej., Fl. Spa. 1: 175. 1811. Tackholm, l.c. 581; Clapham et al, Fl. Brit. Is. ed 2.934. 1962; Dandy in Rech.f.,Fl.Iran. 78:4. t. 4. 1971.

  • Alisma lanceolatum* sensu Samuelsson
  • Alisma loeselii Gorski
  • Alisma plantago-aquatica var. decumbens Boiss.
  • Alisma plantago-aquatica** sensu Aitch.

    Glabrous herb. Leaves submerged or emerged, linear or linear-lanceolate to oblong-elliptic, attenuate at the base, obtuse; petiole short or absent. Panicle similar to that of Alisma lanceolatum, with somewhat recurved branches and pedicels. Flowers white to purplish-white, c. 8 mm across; pedicel thickened, up to 5 cm long; bracts lanceolate-ovate. Sepals ovate, 1.5-2.5 mm long, acute. Petals obovate, 2.5-3.5 mm long, 2-3.5 mm broad, obtuse. Stamens shorter than the ovaries; anthers somewhat orbicular or isodiametric. Ovaries subovate, c. 1 mm long; styles recurved, shorter than ovaries, papillate in the upper 1/4-1/2 part. Achenes somewhat obovate, c. 2.5 mm long, 3 ridged on the back.

    Fl. Per.: July-August.

    Type: Described from Belgium, Hocquart..

    Distribution: West Pakistan, temperate Asia, north Africa, Europe and North America.

    It sometimes approaches Alisma lanceolatum and Alisma plantago-aquatica in leaf shape but can be distinguished on key characters.


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