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!Agrostis L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

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

Project Name Data (Last Modified On 6/2/2011)
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
 
 
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