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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

TRIGLOCHIN ARROW-GRASS
Plant ± glabrous. Leaf: basal, ± tufted; sheath membranous; ligule tip entire to 2-lobed [0]. Flower: perianth parts generally adaxially concave; anthers ± sessile; stigma papillate or ± plumose. Fruit: achene or generally 3, 6 mericarps. Seed: 1, linear, ± flat or angled.
± 20 species: temperate, circumboreal, Australia, southern Africa, South America. (Greek: 3 points, from fruits of some) TOXIC when fresh, from cyanogenic compounds.

Key to Triglochin

1. Annual; inflorescence a generally emergent spike of bisexual and sometimes staminate flowers + 2 submerged, long-styled, sessile pistillate flowers enclosed in leaf sheath at base of scape; perianth parts 0 or 1; stamens 0 or 1; carpels 0 or 1, fertile ..... T. scilloides

1' Perennial herb; inflorescence an aerial raceme of bisexual flowers; perianth parts generally 6; stamens 1, 3, 6, occasionally fewer; carpels 6, all or 3 fertile

2. Fertile carpels, mericarps 3

3. Fruit 5–7(9) mm; mericarps weak-ridged abaxially; rhizome ± stout; plant tufted; c&s High Sierra Nevada, 2100–3450 m ..... T. palustris

3' Fruit 1–1.5 mm; mericarps strong-3-keeled abaxially; rhizome slender; plant mat-forming; North Coast, Central Coast, n South Coast, < 30 m ..... T. striata

2' Fertile carpels, mericarps 6

4. Plant dense-tufted, (1)4–11 dm; rhizome stout; ligule tip entire to ± notched, (1)1.5–5 mm; leaf ± elliptic in ×-section, generally 2–5 mm wide ..... T. maritima

4' Plant loose-tufted to mat-forming, 1–6 dm; rhizome ± slender, often creeping; ligule tip deep-2-lobed, 0.5–1.5 mm; leaf ± round or semicircular in ×-section, generally 1–2 mm wide ..... T. concinna

5. Plant generally 1–3(4.5) dm; inflorescence generally >= leaves; salt marshes; North Coast, Central Coast, South Coast ..... var. concinna

5' Plant (1)3–5(6) dm; inflorescence generally >> leaves; alkaline meadows, seeps, mudflats, stream and lake margins; ne Klamath Ranges, n High Cascade Range, s High Sierra Nevada, Great Basin Floristic Province, Mojave Desert ..... var. debilis

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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