Danthonia spicata

Danthonia spicata is a species of grass known by the common name poverty oatgrass, or simply poverty grass. It is native to North America, where it is widespread and common in many areas.[1] The species is distributed across much of Canada and the United States, and its distribution extends into northern Mexico.[3][4]

Danthonia spicata
Conservation status
Secure  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Genus:	Danthonia
Species:	D. spicata
Binomial name
Danthonia spicata (L.) P.Beauv. ex Roem. & Schult.
Synonyms[2]
Danthonia thermalis Avena spicata (L.) B. Fedtsch.

This perennial bunchgrass is variable in appearance. It has no rhizomes or stolons. It grows anywhere from 7 to 100 cm (2.8 to 39 in) tall. The grass takes the form of a crowded tuft of leaves at ground level. The leaves often become curly and persist as they dry out. Plants in shady and moist areas may not have curly leaves. The inflorescence is a narrow panicle of up to 18 spikelets.[3] The spikelets have twisted, hairy awns. There are also some unopening, cleistogamous florets next to the leaves, and in the panicles.[5] There is a long-lasting soil seed bank, with the seeds persisting for decades before being stimulated to germinate.[4]

This grass grows in many types of habitat, and it occurs in a variety of forest and grassland ecosystems. It grows easily on poor, dry, rocky soils,[1][3][6] for which it owes its common name. When a habitat is disturbed, after a wildfire, for example, the seeds long-buried in the soil are stimulated and germinate, making the plant a pioneer species that colonizes recently cleared land. It then becomes less common as other plant species begin to move in. It is a common member of the plant community in some ecosystems that are maintained by a regime of frequent fires, such as jack pine (Pinus banksiana) barrens.[6]

References

1. Danthonia spicata. The Nature Conservancy. Retrieved 2011-12-18.
2. Avena spicata ITIS report
3. Danthonia spicata. Archived 2012-06-13 at the Wayback Machine Grass Manual Treatment. Retrieved 2011-12-18.
4. Covington, Daniel (2000). "Danthonia spicata". Fire Effects Information System (FEIS). US Department of Agriculture (USDA), Forest Service (USFS), Rocky Mountain Research Station, Fire Sciences Laboratory. Retrieved 2011-12-18 – via https://www.feis-crs.org/feis/.
5. Philipson, M. N. (1986). "A reassessment of the form of reproduction in Danthonia spicata L. Beauv". New Phytologist. 103: 231–43. doi:10.1111/j.1469-8137.1986.tb00611.x.
6. Navarrete-Tindall, N. E.; Van Sambeek, J. W. (2010). "Evaluating poverty grass (Danthonia spicata) for golf courses in the Midwest" (PDF). USGA Turfgrass and Environmental Research Online. 9: 1–8. Retrieved 2011-12-18.

External links

• Danthonia spicata in the CalPhotos Photo Database, University of California, Berkeley