eastern bottlebrush grass
(Elymus hystrix var. hystrix)
Conservation • Wetland • Description • Habitat • Biology • Use • Distribution • Taxonomy
Conservation Status |
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| IUCN Red List | not listed |
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| NatureServe | N5 - Secure SNR - Unranked |
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| Minnesota | not listed |
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Wetland Indicator Status |
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| Great Plains | FACU - Facultative upland |
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| Midwest | FACU - Facultative upland |
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| Northcentral & Northeast | FACU - Facultative upland |
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Description |
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The glumes are usually absent. If present, they are usually greatly reduced in size and scale-like. The lemmas are hairless and smooth or rough to the touch. |
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Height |
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24″ to 60″ |
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Similar Species |
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| Bigelow’s bottlebrush grass (Elymus hystrix var. bigeloviana) lemmas are hairy. It is much less common. | ||
Habitat |
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Dry to moderate moisture. Woods. Partial sun to full shade. |
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Biology |
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Flowering |
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July to August |
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Use |
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Distribution |
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Sources |
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| 8/7/2020 | ||||
Nativity |
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Native |
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Occurrence |
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.png "Distribution Map")
Taxonomy |
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| Kingdom | Plantae (green algae and land plants) | ||
| Subkingdom | Viridiplantae (green plants) | ||
| Infrakingdom | Streptophyta (land plants and green algae) | ||
| Superdivision | Embryophyta (land plants) | ||
| Division | Tracheophyta (vascular plants) | ||
| Subdivision | Spermatophytina (seed plants) | ||
| Class | Liliopsida (monocots) | ||
Order |
Poales (grasses, sedges, cattails, and allies) | ||
Family |
Poaceae (grasses) | ||
| No Rank | BOP clade | ||
| Subfamily | Pooideae | ||
| Supertribe | Triticodae | ||
| Tribe | Triticeae | ||
| Subtribe | Hordeinae | ||
Genus |
Elymus (wild ryes and wheat grasses) | ||
| Species | Elymus hystrix (eastern bottlebrush grass) | ||
Eastern bottlebrush grass was originally described by Carl Linnaeus as Elymus hystrix. In 1794 it was moved to a new genus based on the glumes being long setaceous or absent, and became Hystrix patula. DNA studies have subsequently determined that it does indeed belong to the genus Elymus, and it assumed its original name Elymus hystrix. |
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Synonyms |
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Hystrix hystrix Hystrix patula |
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Common Names |
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bottlebrush grass eastern bottle-brush grass eastern bottlebrush grass glumeless wild-rye |
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Glossary
Glume
A chaffy, empty, sterile bract at the base of a grass spikelet. Glumes usually occur in pairs, but occasionally only one is present.
Lemma
The outer, lowermost of the pair of bracts at the base of the grass floret; it ensheaths the palea.
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Plant |
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_03.jpg "eastern bottlebrush grass (var. hystrix)") |
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Inflorescence |
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_05.jpg "eastern bottlebrush grass (var. hystrix)") |
_04.jpg "eastern bottlebrush grass (var. hystrix)") |
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Lemmas |
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_01.jpg "eastern bottlebrush grass (var. hystrix)") |
_02.jpg "eastern bottlebrush grass (var. hystrix)") |
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