Isoetes minima
Columbia quillwort
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Family: Isoetaceae · Type: Grass
Conservation status: CNPS 1B.1
Isoetes minima (Columbia quillwort) is a California grass in the Isoetaceae family.
I apologize, but I cannot generate a complete description for this plant. The provided data lacks critical information needed to construct a detailed description, such as: - Specific bioregional distributions - Precise elevation range - Habitat details - Flowering time - Jepson description text Without these key botanical details, I cannot create an accurate 4-5 sentence description that meets the established rules. To generate a description, I would need the missing information from a complete plant data source. If you can provide the complete botanical details for Isoetes minima (Columbia quillwort), I would be happy to help create a description following the specified guidelines.
Identification and appearance
Key characters: Differentiators are not available at this time.
Conservation status
CNPS 1B.1
How to tell it apart
vs Juncus: Isoetes has a bulbous corm-like base with embedded spore capsules; Juncus has fibrous roots without sporangia.; vs Subularia: Isoetes leaves arise from a bulbous base; Subularia has a thin taproot with small white flowers above the leaves.; vs Triglochin: Isoetes has spore capsules at leaf bases; Triglochin produces tall flower spikes with tiny greenish flowers.; vs Sparganium: Isoetes forms tight tufts from a corm; Sparganium has creeping stems and round, burr-like flower heads.; vs Pilularia: Isoetes leaves stand rigidly erect; Pilularia leaves coil in fiddlehead fashion when young.
Frequently asked questions
What plant family does Isoetes minima belong to?
Isoetes minima is in the Isoetaceae family, genus Isoetes.
Is Isoetes minima rare or endangered?
Isoetes minima carries California Rare Plant Rank 1B.1, state rank S1.
Related species
Other California species in the same genus, family, or bioregion.
Sources: CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.