Agrostis


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Agrostis

 

a genus of perennial and, less commonly, annual grasses of the family Gramineae. The small, one-flowered spike-lets are gathered in loose panicles. There are approximately 200 species, distributed in the temperate and cold belts, mainly in the northern hemisphere in the mountains of tropical regions. The USSR has more than 30 species, growing mainly in the forest zone. The plants grow in meadows (often in large clusters), in glades, amid thickets, and along bodies of water.

The genus includes many forage grasses. The species A. stolonifera (formerly A. alba) and A. gigantea, which are found along wet meadows, are used for pasture and silage. Both species are grown in grass mixtures for lowland meadows. Other forage grasses include the dog bent (A. canina), which grows in the European USSR; the Siberian species A. clavata and A. trinii; and the Caucasian species A. planifolia. The Rhode Island bent (A. tenius; formerly A. capillaris) is often found in dry meadows but is rarely eaten by livestock. A number of species, including the dog bent and the Rhode Island bent, are grown for lawns. A. alpina, the cloud bent (A. nebulosa), and A. rupestris are ornamentals.

REFERENCES

Kormovye rasteniia senokosov i pastbishch SSSR, vol. 1. Edited by I. V. Larin. Moscow-Leningrad, 1950.

T. V. EGOROVA

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The possible polyphylctic origin of copper tolerance in Agrostis tenuis (Gramincae).
Peipsi s.s.) over different periods (I -1970, II--1980, III--1997-2014) Species I-III I-II II-III Phragmites australis S Glyceria maxima P, L, S Agrostis stolonifera P, L, S P, L, S Eleocharis acicularis P, S P Eleocharis palustris P P, S Carex sp.
For example, in Mordovia these buds gave about 67% of the shoots in Agrostis stolonifera.
Asimismo, los efectos del ambiente repercuten en la pobreza floristica del sotobosque integrado por el dominio casi absoluto de gramineas tipo amacollado Festuca tolucensis, Calamagrostis tolucensis, Muhlenbergia macrorura, Agrostis spp., Eragrostis spp., que enmascaran la presencia de otras plantas inferiores (Melo y Oropeza, 1982).
Por su parte, los generos mas ricos son Paspalum (89 especies), Panicum (42), Festuca (36), Eragrostis (29), Calamagrostis (25), Chusquea (25), Digitaria (24), Axonopus (21), Setaria (20), Cenchrus (18), Poa (17), Muhlenbergia (16), Andropogon (15), Aristida (15), Agrostis (14), Lasiacis (12), Urochloa (12), Pariana (11), Sporobolus (11), Arthrostylidium (10), Cortaderia (10), Nassella (10), Neurolepis (10) y Schizachyrium (10) (Tabla 2b).
Cloud grass Agrostis nebulosa bears tiny, delicate flowers that looK lovely bathed in sunlight.
En la Tabla I se observa que tambien se encontro un intervalo amplio de valores para la graminea Agrostis capillaris cultivada en potes de 2 litros con suelo Cambisol al que se le modifico el pH con CAC[O.sub.3], produciendo un pH en la solucion del suelo de 5,2 a 7,8 (Tyler y Olsson, 2001).
Agrostis ramulosa (Kunth) Roem & Schult., Syst.
Dentro de estas comunidades las gramineas autoctonas actuales pertenecen a las subfamilias Pooidae (Agrostis curtisii kerguelen, Agrostis hesperica Romero y Morales, Festuca rubra L.
No adults were detected at transect sites with common bent, Agrostis capillaris, creeping bent, Agrostis stolonifera, or perennial rye grass, Lolium perenne.