Olsynium

Olsynium is a genus of flowering plants in the family Iridaceae, native to North and South America. These herbaceous perennials are commonly known as tinkerbells or sisyrinchiums. While sometimes confused with the broader Sisyrinchium genus, Olsynium species are generally distinguished by specific morphological characteristics, particularly in the seed capsule and seed shape.

Description:

Plants in the Olsynium genus are characterized by their grass-like leaves and small, star-shaped flowers that typically bloom in spring. Flowers are often white, yellow, or blue-violet, depending on the species. They grow from corms and often form clumps. The fruit is a capsule containing numerous seeds.

Taxonomy:

The classification of Olsynium has undergone several revisions. Previously, many species now classified as Olsynium were included within the Sisyrinchium genus. Molecular phylogenetic studies have supported the recognition of Olsynium as a distinct genus.

Distribution and Habitat:

Olsynium species are found in a wide range of habitats, from grasslands and meadows to rocky slopes and woodlands, across the Americas. Their distribution extends from western North America through Central and South America, including the Andes region.

Ecology:

Olsynium plants are pollinated by various insects. They play a role in local ecosystems, providing a food source for pollinators.

Cultivation:

Some Olsynium species are cultivated as ornamental plants in gardens. They are generally easy to grow in well-drained soil and full sun or partial shade.

Selected Species:

• Olsynium douglasii (Douglas' Olsynium, Douglas' Grasswidow)
• Olsynium californicum (Golden Olsynium, California Golden-eyed Grass)
• Olsynium grandiflorum (Largeflower Olsynium)
• Olsynium junceum
• Olsynium biflorum