Alopecurus aequalis
Rotgelbes foxtail ( Alopecurus aequalis )
The Red yellow foxtail ( Alopecurus aequalis ), also red-yellow foxtail, is a plant of the family Gramineae ( Poaceae ).
Features
The Red yellow foxtail grows as an annual to perennial grass, is thus a Therophyt to Hemikryptophyt. It makes short rhizomes and shoots renewal and growth reaches heights of 10 to 25 cm, rarely from 5 to 30 cm. The stem is smooth, bald and only rough below the inflorescence. He has 5-8 nodes, which are also bare. The stems are mostly prostrate. In the lower half they are branched and rooting at the nodes also. They will soar on knickig and up to 70 cm long. In the water, they can also flood.
The lower leaf sheaths are brown and falling apart, the top are slightly inflated. The ligule is 2-5 mm long and narrow - rounded. The leaf sheaths are 2-8 cm (rarely 1-12 ) long, 2-5 mm wide, flat, and slightly ribbed. On both sides they are rough around the ribs and on the edge.
The inflorescence is a 2-7 cm long and 3-5 mm wide Ährenrispe. It is rounded at both ends and cylindric - oblong. The spikelets are 2 to 2.2 (rarely 2.5 ) mm long. The glumes are herbaceous and fused only at the base. On the keel they are ciliated 0.5 mm long and the side faces short hair. The lemma is bald, puts her back at or slightly below the middle of an awn from 1.2 to 1.8 mm in length, which is much longer than the glume, straight and without knee. The anthers are from 0.8 to 1 mm long, at first white, later yellow-red, rust- colored or brick red, yellowish white at the end are ( unlike the similar kink foxtail ). Bloom time is from June to October. The flowers are usually pollinated and proterogyn.
The caryopsis is from 0.8 to 1 mm long, ovate and pointed.
The chromosome number is 2n = 14
Dissemination and locations
The Red yellow foxtail is in Europe, native to the temperate Asia and North America. It grows on the banks of ponds and lakes, in ditches and wet meadows. The species occurs mainly on temporarily flooded, nutrient-rich humus and clay soils. It is a full- light plant and a wetness indicator. Alopecurus aequalis rises up into the subalpine altitudinal zone, in Styria until 1860 m altitude.
It is a Assoziationscharakterart named after him association Alopecuretum aequalis within the association Bidention tripartitae ( Bidens companies).
Documents
In addition to the sources listed in the detailed records of the products based on the following documents:
- Siegmund Seybold (ed.): Schmeil Fitschen - interactive ( CD -Rom ), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6