University of Silesia

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University of Silesia

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Vegetative Morphology
Culms	20-80(120) cm, stout.
Internodes	shorter or longer than the sheaths.
Ligules	3-6(12) mm.
Blades	usually 6-16(25) cm long, 2-5(10) mm wide, flat.
Reproductive Morphology
Panicles	(5)10-35 cm long, (2)3-15 cm wide, usually open, pyramidal.
Branches	with spikelets more than 5 mm from the base.
Pedicels	1-3 mm.
Spikelets	2.4-3.2 mm, 1-flowered.
Lower glumes	1.5-2.5 mm.
Upper glumes	2.4-3.2 mm.
Lemmas	1.6-3 mm, awned.
Awns	5-12 mm.
Anthers	1-2 mm.
Caryopses	1-1.5 mm.

Chromosome Number(s)

2n = 14

Typical Habitat(s)

A weed in lawns, waste places, grain fields, sandy ground, and roadsides.

Nativity / Range

Found scattered throughout the Flora region.

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Name/Synonymy Publication Info

Apera spica-venti (L.) P. Beauv., Essai Agrostogr. 151 (1812). Agrostis spica-venti L., Sp. pl. 1:61 (1753); Anemagrostis spica-venti (L.) Trin., Fund. Agrost. 129 (1820); Festuca spica-venti (L.) Raspail, Ann. Sci. Nat. (Paris) 5:445 (1825); Muhlenbergia spica-venti (L.) Trin., M?m. Acad. Imp. Sci. Saint-P?tersbourg, Ser. 6, Sci. Math., Seconde Pt. Sci. Nat. 6:285 (1841); Agrostis anemagrostis subsp. spica-venti (L.) Syme in Sm. & Sowerby, Engl. bot., ed. 3[B], 11:43 (1872). Agrostis gracilis Salisb., Prodr. stirp. Chapel Allerton 25 (1796). Agrostis ventosa Dulac, Fl. Hautes-Pyr?n?es 74 (1867). Agrostis anemagrostis Syme in Sm. & Sowerby, Engl. bot., ed. 3[B], 11:43 (1872). LEC: L 912.356-53; Europe [Cope, Texon 49:243 (2000)].

Treatment From

K.W. Allred. Apera in Flora of North America, volume 24. In prep. Oxford University Press.

Vegetative Morphology

Reproductive Morphology

Chromosome Number(s)

Typical Habitat(s)

Nativity / Range

Name/Synonymy Publication Info

Treatment From

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