Chiba University Matsudo/Kashiwa Campus Plant Database

ID: 666

Genus ja: イグサ

Genus en: Rush, Rush

# spp.: 341 (from genus_families table) | 2 (from names table)

Accepted: Accepted

Family: Juncaceae

Family ja: イグサ

Infra familial classification:

Distribution en: Cosmopolitan

Description en: Genus of about 300 species of grass-like, hairless, evergreen or deciduous, rhizomatous perennials, widely distributed throughout the world, but mostly occurring in cool-temperate regions, particularly in heavy, wet, acid soil. The stems are cylindrical, nodeless, and usually solid, and the leaves, when present, are small and narrow, often reduced to basal sheaths. Unlike grasses and sedges, rushes produce small green or brown flowers with 6 tepals, borne in cymes in midsummer. Ornamental forms include cultivars with twisted or variegated stems. Rushes are suitable for a pond side or bog garden, but some will also thrive in moist garden soil.

Hardiness en: Fully hardy.

Cultivation en:

Propagation en: Sow seed at 6-12°C (43-54°F) in spring, or divide from mid-spring to early summer.

Pests en: Trouble free.

Description ja:

Comment: Cosmopolitan

Comment ja: イグサ(トウシンソウ)

Type species:

Phylogenetic definition:

Update information: Created: 2007-12-06 12:51; Updated: 2026-03-03 21:57 by hkokubun@mac.com