User:Tmeiss/sandbox

Dactylis is a genus of Eurasian and North African plants in the bluegrass subfamily within the grass family. Although Dactylis is native to North Africa, they are found throughout the world, and are an invasive species. They are known in English as cock's-foot or cocksfoot grasses, also sometimes as orchard grasses.

Ecology
Dactylis is most commonly known as orchard grass. Orchard grasses are suited for habitats like waste lands and meadows. These grasses are able to grow in dry and mildly wet areas. They are a food source for many species of insects and birds. The insect and animals consume the grass's the seeds, leaves, and roots. Dactylis, orchard grass, supports meadow ecosystems by feeding many insects and birds that dominate the areas; these species include: beetles, grasshoppers, larvae, caterpillars, sparrows, and horned larks. Snakes, small mammals, and insects also use orchard grass an a means of shelter and stealth through grass lands.

Cytology[edit]
The taxa show several different levels of polyploidy. The taxa show three levels of polyploidy, including tetraploid, diploid, and hexaploidy. Dactylis glomerata subsp. glomerata and D. glomerata subsp. hispanica are tetraploid forms with 28 chromosomes. Several of the other taxa, including D. glomerata. subsp. himalayensis (syn. D. himalayensis), D. glomerata subsp. lobata (syn. D. polygama), D. metlesicsii, and some forms of D. smithii, are diploid with 2n = 14; hexaploids with 42 chromosomes also occur rarely. Dactylis are reproductively able to produce natural triploid and pentaploid. This occurs in habitats of large populations of diploid and tetraploid Dactylis showing one way gene flow.