Of these, A.alpina is the best known but, despite the common name, it is not a grass but is related to the lilies. It is a perennial herb which forms large mats of closely growing plants in alpine bogs. They are followed by red, edible berries about 12 mm diameter which tend to be hidden in the foliage. A.alpina is not often cultivated but should be suited to moist, peaty soils in full sun or partial shade. It may be difficult to maintain at low elevations and would be best grown in colder climates.
Propagation is from seed or by division of mature clumps.
You may have reached this description from one of several different sources. Thanks to John Wrigley for information on the derivation of the specific name.