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Pakistan | Family List | Poaceae | Agrostis

Agrostis gigantea Roth, Tent. Fl. Germ. 1:31. 1788. Sultan & Stewart, Grasses W. Pak. 2:301. 1959; Bor, Grasses Burma Ceyl. Ind. Pak. 387. 1960; Bor in Towns., Guest & Al-Rawi, Fl. Iraq 9:284. 1968; Bor in Rech.f., Fl. Iran. 70:298. 1970; Tzelvev, Poaceae URSS 329. 1976; Tutin in Tutin et al., Fl. Eur. 5:234. 1980.

  • Agrostis alba* auct. non Linn.
  • Agrostis stolonifera subsp. gigantea (Roth) Maire & Weiller

    Rhizomatous perennial without stolons; culms 40-120(-150) cm high, erect or geniculately ascending, rooting and branching from the lower nodes, smooth. Leaf-blades 5-20 cm long, 2-8 mm wide, flat, scabrid; ligule 1.5-6 mm long, blunt. Panicle oblong to ovate, 8-25 cm long, loose and open, the branches clustered, spreading, divided above the naked base; inflated tip of pedicel scabrid. Spikelets 2-3 mm long, breaking up at maturity above the persistent glumes; glumes acute, awnless, rough on the keel; lemma 1.5-2.5 mm long, very blunt, usually awnless, rarely with a short awn from near the tip; palea half to two-thirds the length of the lemma; anthers 1-1.5 mm long.

    Fl. & Fr. Per.: July-August.

    Type locality: Germany.

    Distribution: Pakistan (Punjab, N.W.FY., Gilgit & Kashmir); Europe and temper-ate Asia; introduced in North America etc.

    Very similar to Agrostis stolonifera but distinguished by its rhizomes and lack of stolons and a panicle that remains loose and open after anthesis. It is a more aggressive species than Agrostis stolonifera and can become a troublesome weed. Male-sterile hybrids between the two species are known.

    1500-3000 m.


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