Carex acuta

Carex acuta

The Slender Sedge ( Carex acuta; syn. C. gracilis ), also referred to as Spitzsegge, belongs to the genus of sedges ( Carex ) in the family of the Sedge family ( Cyperaceae ). It is one of the most common sedge and forms on wet, not too nutrient-poor meadows often monotonous Einartbestände ( tall sedge reeds ).

Description

The Slim - sedge is a perennial, herbaceous plant, which reaches stature heights between 30 and 150 centimeters. It forms lockerrasige stocks with many long underground runners ( rhizomes). Their limbs are covered with very long, dark Lower leaves. Limbs and internodes are rarely rooted. The main root mass from many wiry, thick and thin, heavily matted roots lies on the three-sided drive. The diameter of the thickest roots of live plants is between 1.5 and 2 mm. The engine base is rounded - bulbous, light or dark brown with bright nervous lines. The flower stems are upright stiff. You're up three -edged and very rough. The sharply denticulate margins gradually tapered and flabby overhanging leaf blades are folded back (break edge sheet ). They are green or gray-green, upper side very rough and does not have a triangular point. They are about 5-10 millimeters wide and about 20 inches long. The leaf sheaths are sharp triangular and very high extent. The anterior vaginal wall is white-skinned and zerfasernd lobed, the upper edge is wrong and brownish. The stump angled ligule is also brownish in color.

The lowest husk leaves is leaf-like and longer than the up to about 20 centimeters long inflorescence. This is slightly overhanging and consists of two to four reddish- brown, slender male ears. Among them are two to four, sometimes up to eight blackish - green, stalked female ears. They are 3-15 inches long. You husks are red - brown to black and green keeled. The 2 to 3 millimeters long and 1.5 to 2 mm wide fruit hoses are yellow-green to brown on both sides and arched with short uncleaved beak. The ovary is zweinarbig. The fruit is brown. The flowering period extends from April to June.

The Slender Sedge forms with the brown sedge (C. nigra ) is a hybrid that Lean Bastard - sedge ( Carex x elytroides ). Additional hybridizations with the swamp sedge (C. acutiformis ) and the bladder sedge (C. vesicaria ) are described in the literature.

Distribution and location

The Slim - sedge is common in almost all of Europe, North Africa, West and North Asia. It grows on the banks of water bodies, ditches and wet meadows and flood channels.

She prefers sicker or AC aces, nutrient -and base- rich, moderately acidic, more or less half-bog sand, loam and clay soils. The Slender Sedge is the Kennart of Slim harrows Ried ( Caricetum gracilis Tx. 1937) and grows mostly in contact or penetration of wet meadow communities ( Calthion ) or companies within the riparian hardwood ( Alno - Ulmion ).