Triglochin sp.
Arrow-grass, Arrow-Grass
Family: Juncaginaceae · Type: Perennial · Native
Triglochin sp. (Arrow-grass) is a native California perennial in the Juncaginaceae family.
How to tell it apart
vs Plantago: Triglochin has bractless flower spikes with scale-like flowers; Plantago has obvious leafy bracts below the flower cluster.; vs Typha: Triglochin has a slender spike of tiny greenish flowers; Typha has dense, brown, sausage-shaped flower heads.; vs Juncus: Triglochin leaves are semicircular in cross-section with a groove above; Juncus leaves are round or flat without a groove.; vs Rumex: Triglochin leaves are undivided grass-like blades; Rumex has broader leaves with a distinct midvein and papery sheaths.; vs Lomandra: Triglochin has tiny greenish flowers in a slender spike; Lomandra has larger cream-yellow flowers in dense clusters.
Frequently asked questions
Is Triglochin sp. native to California?
Yes. Triglochin sp. is native to California (recorded as native).
What plant family does Triglochin sp. belong to?
Triglochin sp. is in the Juncaginaceae family, genus Triglochin.
Related species
Other California species in the same genus, family, or bioregion.
- Triglochin striata — Three-ribbed arrow-grass
- Triglochin concinna — Arrow grass
- Triglochin concinna var. concinna — Seaside arrow-grass
- Triglochin concinna var. debilis — Slender arrow grass
- Triglochin maritima — Common arrow-grass
- Triglochin palustris — Marsh arrow-grass
- Juncaginaceae sp. — Arrow-grass family
Sources: Jepson eFlora · CalPhotos
Last updated 2026-04-14
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.