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Gastridium phleoides

©Utah State University

Vegetative Morphology

 
Plants annual; tufted or culms solitary.
Culms 7-70 cm, erect to decumbent.
Leaves cauline.
Sheaths open.
Auricles vestigal or absent.
Ligules membranous.
Blades flat.

Reproductive Morphology

 
Inflorescences panicles, contracted or spiciform.
Branches appressed to ascending.
Spikelets laterally compressed, solitary, with 1 bisexual floret.
Rachillas prolonged as bristles or absent.
Disarticulation above the glumes.
Glumes unequal, exceeding the florets, 1-veined, subcoriaceous and gibbous on the lower portion, distally membranous, narrow, acuminate to attenuate, unawned.
Calluses short, blunt, glabrous.
Lemmas membranous, pubescent or glabrous, 5-veined, lateral veins usually faint, apices more or less truncate and denticulate, unawned or awned, unawned and awned lemmas present in the same panicle.
Awns arising in the upper 1/3, sometimes subterminal, awns shorter or longer than the lemmas, geniculate.
Paleas subequal to the lemmas, hyaline, 2-veined, bifid.
Lodicules 2, membranous, glabrous, entire, unlobed.
Anthers 3.
Ovaries glabrous.
Caryopses slightly adhering to the lemmas and/or paleas.
Hila short.

Species Distribution Maps

Gastridium phleoides

Chromosome Number(s)

x = 7

Additional Notes

Name from the Greek gastridion, 'small pouch', alluding to the gibbously swollen glumes.

Gastridium is a genus of two species, native to Europe and North Africa eastwards to Iran. They grow in grassy or disturbed sites. One species is established in the Flora region.

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Name/Synonymy Publication Info

Gastridium P. Beauv., Essai Agrostogr. 21 (1812). TYPE: Gastridium australe P. Beauv. [=Gastridium ventricosum (Gouan) Schinz & Thell.].

Treatment from

J.K. Wipff. Gastridium in Flora of North America, volume 24. In prep. Oxford University Press.

Fact Sheet Developed By

Pedro Oñativia Lake © 2006.