Hordeum is a genus of about 30 species of annual and perennial grasses, native throughout the temperate Northern Hemisphere, temperate South America, and also South Africa.
One species, H. vulgare (barley), is of major commercial importance as a cereal grain, used as fodder crop and for malting in beer andwhiskey production. Some species are nuisance weeds introduced worldwide by human activities others endangered due to habitat loss.
Hordeum species are used as food plants by the larvae of some Lepidoptera species including The Flame, Rustic Shoulder-knot andSetaceous Hebrew Character.
The genus Hordeum comprises many species (see much longer list at WikiSpecies entry):
- Hordeum arizonicum
- Hordeum bogdanii
- Hordeum brachyantherum
- Hordeum brevisubulatum
- Hordeum bulbosum
- Hordeum capense
- Hordeum chilense
- Hordeum comosum
- Hordeum cordobense
- Hordeum depressum
- Hordeum distichon
- Hordeum erectifolium
- Hordeum euclaston
- Hordeum flexuosum
- Hordeum fuegianum
- Hordeum guatemalense
- Hordeum gussoneanum (sea barley)
- Hordeum intercedens
- Hordeum jubatum (foxtail barley)
- Hordeum lechleri
- Hordeum marinum (sea barley)
- Hordeum murinum (wall barley)
- H. murinum subsp. murinum
- H. murinum subsp. glaucum
- H. murinum subsp. leporinum (hare barley)
- Hordeum muticum
- Hordeum patagonicum
- Hordeum parodii
- Hordeum procerum
- Hordeum pubiflorum
- Hordeum pusillum (little barley)
- Hordeum roshevitzii
- Hordeum secalinum
- Hordeum stenostachys
- Hordeum tetraploidum
- Hordeum vulgare (barley)
- H. vulgare subsp. vulgare (barley)
- H. vulgare f. distichon (two-rowed barley)
- H. vulgare f. hexastichon (six-rowed barley)
- H. vulgare subsp. spontaneum (wild barley)
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