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Dichanthelium

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Dichanthelium
Dichanthelium scoparium
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Supertribe: Panicodae
Tribe: Paniceae
Subtribe: Dichantheliinae
Genus: Dichanthelium
(Hitchc. & Chase) Gould

Dichanthelium is genus of flowering plants of the grass family, Poaceae. They are known commonly as rosette grasses and panicgrasses.[1]

Formerly a subgenus of the genus Panicum, Dichanthelium was elevated to genus status in 1974.[2] Its species are still treated as members of Panicum by some authorities, because the two genera are very similar in form. Molecular data supports the recognition of Dichanthelium as a separate genus.[3]

These are perennial grasses, sometimes with rhizomes. The grasses may overwinter as rosettes of short, wide leaves and then produce longer, wider leaves on the stem during spring. They produce hollow stems a few centimeters tall to well over one meter. They are upright to erect when new, then sometimes sprawling, spreading, and bending as the season progresses. The upper stems may have a few main branches that divide into smaller branches bearing panicles. There are primary panicles, which may be chasmogamous, and secondary panicles, which are often cleistogamous. The spikelets are roughly 1 to 5 millimeters long and lack awns.[3]

There are about 72 species in the genus.[3]

Species include:[1][3][4][5]

Dichanthelium leibergii
Dichanthelium laxiflorum
Dichanthelium sphaerocarpon
Dichanthelium acuminatum ssp. sericeum

References

  1. ^ a b Dichanthelium. USDA PLANTS.
  2. ^ Gould, F. W. (1974). Nomenclatural changes in the Poaceae. Brittonia 26(1), 59-60.
  3. ^ a b c d Freckmann, R. W. and M. G. Lelong. Dichanthelium.The Grass Manual. Flora of North America. Archived 2012-11-06 at the Wayback Machine
  4. ^ Dichanthelium. Integrated Taxonomic Information System (ITIS).
  5. ^ GRIN Species Records of Dichanthelium. Germplasm Resources Information Network (GRIN).
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