Turf rush

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Turf rush
German turf rush (Trichophorum cespitosum subsp. Germanicum)

German turf rush ( Trichophorum cespitosum subsp. Germanicum )

Systematics
Monocots
Commelinids
Order : Sweet grass (Poales)
Family : Sourgrass family (Cyperaceae)
Genre : Rushes ( Trichophorum )
Type : Turf rush
Scientific name
Trichophorum cespitosum
( L. ) Hartm.

The turf rush ( Trichophorum cespitosum ) is a species of the genus grass rush ( Trichophorum ) within the sour grass family (Cyperaceae).

description

Illustration from Flora Batava , Volume 6

Vegetative characteristics

The turf rush is a perennial herbaceous plant and reaches stature heights of 5 to 35, sometimes up to 60 centimeters. The mostly hedgehog-shaped shape of their dense, rigid clumps is characteristic . Their stems are erect and smooth. The leaf blade is 3 to 10 mm long.

Generative characteristics

The flowering period extends from May to June. The spikelets are 3 to 8 mm long and about 3 mm wide, ovate to linear and contain 3–20 flowers. The husks are pointed, linear-lanceolate, yellow- or reddish-brown with a green central rib. The two lowest husks have a blunt tip; they are about as long as the spikelet. There are five to six perianth bristles ; they are about 1.5 times as long as the nut and brown. The nut is egg-shaped and triangular, 1.5 to 2 mm long and gray to yellow-brown.

The number of chromosomes is 2n = 104.

Occurrence

The turf rush is a characteristic plant species of nutrient-poor moors , of wet and bog heaths and of bog forests .

Infructescence of the German turf rush ( Trichophorum cespitosum subsp. Germanicum )

Systematics

The first publication took place in 1753 under the name ( Basionym ) Scirpus cespitosus by Carl von Linné . The new combination to Trichophorum cespitosum (L.) Hartm. was published by Carl Johan Hartman in 1849 .

From Trichophorum cespitosum there are two subspecies :

as well as the hybrid of the two subspecies:

  • Trichophorum cespitosum nothosubsp. foersteri Swan : It occurs in Great Britain, Ireland, Norway, the Netherlands, Belgium and Germany.

The macroscopic differentiation of the subspecies and the hybrids is based on the depth of the edge of the upper leaf sheath and the length of the associated leaf blade .

The uppermost leaf sheath of the German turf rush is usually more than 2 millimeters deep in relation to the base of the leaf blade. The top leaf blade is about twice as long as the cutout is deep. In the common turf rush, on the other hand, the uppermost leaf sheath is about 1 millimeter deep, opposite the base of the leaf blade, and the leaf blade is about five times as long as the cutout is deep. In the hybrid, the base of the leaf blade is 1 to 2 millimeters deep and the leaf blade is about three times as long as the section is deep.

literature

swell

  1. ↑ a b Rafaël Govaerts (Ed.): Trichophorum cespitosum. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved October 29, 2016.
  2. ↑ Henning Haeupler & Thomas Muer: Picture Atlas of Ferns and Flowering Plants in Germany. Ulmer, Stuttgart, 2000, ISBN 3-8001-3364-4

Web links

Commons : Rush ( Trichophorum cespitosum )  - album with pictures, videos and audio files