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Published In: Species Plantarum 1: 61. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: A genus of 150-200 species mainly in temperate and cold regions, especially in the northern hemisphere; 8 species occur in Pakistan.
Comment/Acknowledgements: There are unconfirmed reports of the following species in Pakistan: Agrostis nervosa Nees ex Trin. (like Agrostis vinealis, but spikelets 2.5-3 mm and anthers less than 1 mm long); Agrostis micrantha Steud. (similar to Agrostis nervosa but spikelets 2mm long); Agrostis capillarys Linn. (Agrostis tenuis Sibth.) (like Agrostis gigantean, but inflated pedicel tip smooth).


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Annuals or perennials. Leaf-blades linear to subulate. Panicle usually much divided, rarely spike-like. Spikelets linear-lanceolate to oblong, small, often gaping and with the rhachilla prolonged beyond the floret; glumes persistent (rarely the spikelet falling entire), subequal, mostly lanceolate and acute to acuminate, membranous, often shining, 1(-3)-nerved; lemma oblong to elliptic, shorter than the glumes, truncate or denticulate, thin, (3-)5-nerved with the nerves often excurrent into mucros, awnless or awned from the back; callus small, obtuse, glabrous or pubescent (rarely bearded); palea usually shorter than the lemma, sometimes obsolete.

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1 Spikelets falling entire attached to the pedicel (2)
+ Spikelets not falling entire, the rhachilla breaking up at maturity above the persistent glumes (3)
2 (1) Spikelets, 1.5-2.5 mm long; palea almost as long as the lemma; anthers 0.5-0.7 mm long Agrostis viridis
+ Spikelets 3-4 mm long; palea two-thirds the length of the lemma; anthers 1-1.5 mm long Agrostis hissarica
3 (1) Lemma hairy (4)
+ Lemma glabrous (5)
4 (3) Palea about as long as the lemma; awn, when present, short and straight Agrostis munroana
+ Palea not more than a third the length of the lemma; awn long and twisted below Agrostis pilosula
5 (3) Palea minute, much less than half as long as the lemma (6)
+ Palea at least half as long as the lemma (7)
6 (5) Anthers 05-0.8 mm long; awn, when present, arising from slightly above the middle of the lemma; panicle very narrow, interrupted Agrostis filipes
+ Anthers 1-1.5 mm long; awn, when present, arising from slightly below the middle of the lemma; panicle lanceolate to narrowly ovate or oblong Agrostis vinealis
7 (5) Plant with rhizomes but without stolons; panicle loose and open after anthesis Agrostis gigantea
+ Plant with stolons but without rhizomes; panicle contracted after anthesis Agrostis stolonifera

Lower Taxa