Table of Contents
Overview
Comprehensive Description
Description
© Mark Hyde, Bart Wursten and Petra Ballings
Source:
Flora of Zimbabwe
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Distribution
Argentina (South America)
Belize (Mesoamerica)
Bolivia (South America)
Brazil (South America)
Canada (North America)
Chile (South America)
Cameroon (Africa & Madagascar)
Colombia (South America)
Costa Rica (Mesoamerica)
Ecuador (South America)
El Salvador (Mesoamerica)
French Guiana (South America)
Guatemala (Mesoamerica)
Guyana (South America)
Honduras (Mesoamerica)
Mexico (Mesoamerica)
Nicaragua (Mesoamerica)
Panama (Mesoamerica)
Peru (South America)
Paraguay (South America)
Caribbean (Caribbean)
Suriname (South America)
United States (North America)
Venezuela (South America)
Uruguay (South America)
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Forzza, R. C. & et al. 2010. 2010 Lista de espécies Flora do Brasil. http://floradobrasil.jbrj.gov.br/2010/.
http://www.tropicos.org/Reference/100002289
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Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone. 2003 and onwards. On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48. http://www.tropicos.org/Project/CNWG:. In R. J. Soreng, G. Davidse, P. M. Peterson, F. O. Zuloaga, T. S. Filgueiras, E. J. Judziewicz & O. Morrone Internet Cat. New World Grasses. Missouri Botanical Garden, St. Louis.
http://www.tropicos.org/Reference/1024044
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Davidse, G., M. Sousa Sánchez & A. O. Chater. (eds.) 1994. Alismataceae a Cyperaceae. Fl. Mesoamer. 6: i–xvi, 1–543.
http://www.tropicos.org/Reference/8200
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Zon, A. P. M. v. 1992. Graminées du Cameroun. Wageningen Agric. Univ. Pap. 92–1(2): 1–557.
http://www.tropicos.org/Reference/1024162
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Davidse, H., Longhi-Wagner G. & S. Laegaard. 2003. Aristida. In Catalogue of New World Grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46: 69–104.
http://www.tropicos.org/Reference/1003760
© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA
Source:
Missouri Botanical Garden
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Molecular Biology and Genetics
Barcode
Locations of barcode samples
© Barcode of Life Data Systems
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Statistics of barcoding coverage
| Specimen Records: | 128 |
| Specimens with Sequences: | 215 |
| Specimens with Barcodes: | 208 |
| Public Records: | 6 |
| Species: | 45 |
| Species With Barcodes: | 43 |
© Barcode of Life Data Systems
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Barcode data
© Barcode of Life Data Systems
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Wikipedia
Aristida
The three-awns are the grass genus Aristida, distinguished by having three awns (bristles) on each lemma of each floret.[1] The genus includes about 300 species, found worldwide, often in arid warm regions. This genus is among those colloquially called "wiregrasses", "speargrasses" or "needlegrasses".
Aristida stems are ascending to erect, with both basal and cauline leaves. The leaves may be flat or inrolled, and the basal leaves may be tufted. The inflorescences may be either panicle-like or raceme-like, with spiky branches. The glumes of a spikelet are narrow lanceolate, usually without any awns, while the lemmas are hard, three-veined, and have the three awns near the tip. The awns may be quite long; in A. purpurea var. longiseta they may be up to 10 cm.
They are characteristic of semiarid grassland. The Wiregrass Region of North America is named for A. stricta. Other locales where this genus is an important component of the ecosystem include the Carolina Bays, the sandhills of the Carolinas and elsewhere, Mulga scrub in Australia, and the xeric grasslands around Lake Turkana in Africa.
On the other hand, a local increase of the amount of "wiregrass" – which is not well liked by livestock – is a good indicator of overgrazing.
Selected species
- Aristida adscensionis Aristida anaclasta
- Aristida basiramea – Fork-tipped Three-awn, Forked Three-awn
- Aristida behriana F.Muell.
- Aristida beyrichiana
- Aristida burkei – bohlanya-ba-pere (Sesotho: "horse-madness grass")
- Aristida californica
- Aristida calycina Aristida chaseae
- Aristida contorta F.Muell.
- Aristida dichotoma Michx. – Shinner's Three-awn, "poverty grass"
- Aristida divaricata
- Aristida granitica
- Aristida guayllabambensis
- Aristida hygrometrica Aristida junciformis
- Aristida longespica – Slim-spiked Three-awn
- Aristida mutabilis
- Aristida oligantha Michx. – Prairie Three-awn
- Aristida pallens Cav.
- Aristida portoricensis – Pelos del diablo
- Aristida pungens – Drinn
- Aristida purpurascens Poiret – Arrowfeather Three-awn
- Aristida purpurea – Purple Three-awn
- Aristida ramosa Aristida refracta
- Aristida rhizomophora
- Aristida spiciformis
- Aristida stricta – Pineland Three-awn, "wiregrass"
- Aristida suringarii
- Aristida swartziana
- Aristida tenuifolia
- Aristida vagans
- Aristida vaginata
See also
- New Mexico State University Botanical Garden has a large collection of local Aristida species
- Puccinia aristidae, a plant pathogenic urediniomycete fungus first described from three-awn grass
- List of Poaceae genera
References
- ^ Watson L, Dallwitz MJ. (2008). "The grass genera of the world: descriptions, illustrations, identification, and information retrieval; including synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, world and local distribution, and references". The Grass Genera of the World. http://delta-intkey.com/grass/www/aristida.htm. Retrieved 2009-08-19.
- Hickman, James C. (ed.) (1993): The Jepson Manual - Higher Plants of California: 1234-1235.
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