Common Name: thatching grass
Family: Poaceae
Common Synonyms: Andropogon hirtus
USDA Hardiness Zone: 7a-10b
Growth Habit: Perennial grass
Origin: Africa, Southern Europe, western Asia
FISC Category: -
FDACS Listed Noxious Weed: No
Introduction Date: Earliest Florida specimen vouchered in 1958
IFAS Assessment:
Plants perennial; cespitose but with short rhizomes. Culms 30-100 cm. Sheaths glabrous; blades 2-40 cm long, 1-3(4) mm wide. Peduncles 5-10 cm; rames 1-3.5(4) cm, 1 almost sessile, the other with a 5-10 mm base, both with 8-14 heterogamous spikelet pairs. Glumes of all spikelets densely pubescent, hairs to 0.3 mm, white to dark yellow. Sessile spikelets of homogamous pairs 4.9-5.6 mm; sessile spikelets of heterogamous pairs 4-4.5 mm; lemmas awned, awns 1-3.5 cm. Pedicellate spikelets 4.8-6.5 mm. 2n = 30, 44, 45.
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Lucid Key Server. 2016. Weeds of Australia. Hyparrhenia hirta. https://keyserver.lucidcentral.org/weeds/data/media/Html/hyparrhenia_hirta.htm Accessed March 27, 2022.
Shoot Gardening. 2022. Hyparrhenia hirta (Common thatching grass). https://www.shootgardening.co.uk/plant/hyparrhenia-hirta Accessed March 27, 2022.
Boufford, D. E. Fumaria. In: Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico [Online]. 22+ vols. New York and Oxford. Vol. 25. http://floranorthamerica.org/Hyparrhenia. Accessed [2 August 2022].