''Hystrix'' was a formerly recognized genus of grass (family

Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

). The genus ''Hystrix'' was created in 1794 by

Conrad Moench Conrad Moench (sometimes written Konrad Mönch; 15 August 1744 – 6 January 1805) was a German botanist, professor of botany at Marburg University from 1786 until his death. He wrote 'Methodus Plantas horti botanici et agri Marburgensis' in 179 ...

for the species described as ''

Elymus hystrix ''Elymus hystrix'', known as eastern bottlebrush grass, or bottle-brush-grass, is a bunchgrass in the grass family, Poaceae. It is native to the Eastern United States and Eastern Canada. Description ''Elymus hystrix'' is a herbaceous plant with ...

'' by Carl Linnaeus in 1753. Moench considered that ''E. hystrix'' was sufficiently distinct to be placed in a separate genus as ''Hystrix patula''; the genus was to be used for species without

glume In botany, a glume is a bract (leaf-like structure) below a spikelet in the inflorescence (flower cluster) of grasses (Poaceae) or the flowers of sedges (Cyperaceae). There are two other types of bracts in the spikelets of grasses: the lemma and ...

s or with long setaceous glumes. Subsequently a number of other grass species were placed in this genus.

Genomic Genomics is an interdisciplinary field of biology focusing on the structure, function, evolution, mapping, and editing of genomes. A genome is an organism's complete set of DNA, including all of its genes as well as its hierarchical, three-dim ...

studies from the 1960s onwards showed that ''H. patula'' does in fact belong in ''Elymus'', as this is now defined. Other species placed in ''Hystrix'' have genomes more closely resembling those of '' Leymus'' species, and are better placed in that genus. Currently accepted transfers include: * ''Hystrix californica'' → ''

Leymus californicus ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * ''Leym ...

'' * ''Hystrix coreana'' → ''

Leymus coreanus ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * ''Leym ...

'' * ''Hystrix duthiei'' → ''

Leymus duthiei ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * '' Ley ...

'' * ''Hystrix komarovii'' → ''

Leymus komarovii ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * ''Leym ...

'' * ''Hystrix sibirica'' → ''

Leymus sibiricus ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * '' Ley ...

'' * ''Hystrix patula'' → ''

References

{{reflist, refs= {{Citation , last1=Sha , first1=Lina , last2=Fan , first2=Xing , last3=Yang , first3=Ruiwu , last4=Kang , first4=Houyang , last5=Ding , first5=Chunbang , last6=Zhang , first6=Li , last7=Zheng , first7=Youliang , last8=Zhou , first8=Yonghong , date=2010 , title=Phylogenetic Relationships between ''Hystrix'' and Its Closely Related Genera (Triticeae; Poaceae) Based on Nuclear Acc1, DMC1 and Chloroplast TrnL-F Sequences , journal=Molecular Phylogenetics and Evolution , volume=54 , issue=2 , pages=327–335 , doi=10.1016/j.ympev.2009.05.005 , name-list-style=amp , pmid=19435606 {{Citation , last1=Zhang , first1=Hai-Qin , last2=Yang , first2=Rui-Wu , last3=Yang , first3=Cai-Rong , last4=Huang , first4=Yan , last5=Fan , first5=Xing , last6=Sha , first6=Li-Na , last7=Kang , first7=Hou-Yang , last8=Wang , first8=Yi , last9=Zhou , first9=Yong-Hong , date=2014 , title=What Became of ''Hystrix''? , journal=Journal of Systematics and Evolution , volume=52 , issue=6 , pages=712–715 , doi=10.1111/jse.12116 , name-list-style=amp , doi-access=free {{citation , title=''Elymus hystrix'' L., work= World Checklist of Selected Plant Families , publisher= Royal Botanic Gardens, Kew , url=http://apps.kew.org/wcsp/namedetail.do?name_id=469244 , accessdate=2015-12-27 Historically recognized angiosperm genera Pooideae Poaceae genera