The flowers close in the afternoon or evening and open up again in the morning. The star-shaped flowers with 6 pointed tepals (three petals and three almost identical sepals, although the sepals are typically slightly wider than the petals) typically have a yellow center. Individual flowers emerge from a green spathe slightly wider than the supporting branch.Įach star-shaped flower emerges from a green spathe on the flower spike. In spring or summer small flowers appear on spikes at or just above the foliage. Some species are evergreen, while many others - especially in colder areas - die back to the ground in winter. They grow from thin rhizomes that gradually spread outward from the clump. However, the individual leaves are usually narrower than that of a typical iris plant, giving a grass-like appearance. Sisyrinchium plants all have clumps of stiff, upright, sword-shaped leaves held in a fan shape – just like most of their relatives in the iris family. Some species have many natural variants that were likely mis-named as species – so more research is needed to figure out the true relationships. The taxonomy of the group is quite confused, so the number of species varies from 50 to 150, depending on which classification system is used. Most are not well known and only a few are used as ornamentals. All are native to North or South America. But many species are low growing with narrow leaves that appear grass-like and many grow in grasslands. The genus Sisyrinchium is a large group of annuals and perennials in the iris family (Iridaceae). A grouping of Sisyrinchium angustifolium ‘Lucerne’.ĭespite it’s common name, blue-eyed grass is not a grass.
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