Common Name: ARROW-GRASS FAMILY Habit: Annual, perennial herb, rhizomed or dense-tufted, terrestrial or aquatic. Leaf: generally +- basal, alternate, +- flat to narrow-cylindric; sheath open, generally liguled. Inflorescence: spike or generally +- scapose raceme; bracts 0. Flower: generally bisexual; perianth parts generally 6 in 2 whorls (0, 1) [3, 4], free, scale-like, +- green or tinged +- red-purple; stamens 0, 1, 3, or 6, filaments short, +- fused to perianth; pistil 1, carpels 1, 6 [3, 4], +- fused, separating in fruit [or not], each with 1 chamber and 1 ovule or 3 carpels fertile, 3 sterile, placentas basal, stigmas generally +- sessile. Fruit: achene or generally mericarps. Genera In Family: 3 genera, 30 species: temperate, circumboreal, Australia, southern Africa, South America. Note:Lilaea included in Triglochin. eFlora Treatment Author: David J. Keil Scientific Editor: Thomas J. Rosatti.
Common Name: ARROW-GRASS Habit: 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. Etymology: (Greek: 3 points, from fruits of some) Toxicity: TOXIC when fresh, from cyanogenic compounds.
Triglochin palustris L.
NATIVE Habit: Perennial herb 1--3(5.5) dm, tufted; rhizomes ascending, +- stout. Leaf: 5--30 cm, 0.5--2 mm wide, +- elliptic in ×-section; ligule 0.5--1.5 mm, tip generally deep-2-lobed. Inflorescence: aerial raceme, generally 1--2 per pl, generally > leaves; pedicels generally 4--6 mm in fruit, erect. Flower: perianth parts generally 6, 1.5--2 mm; stamens 6; fertile carpels 3. Fruit: mericarps 3, 5--7(9) mm, distally clinging to fruit axis, abaxially weak-ridged. Chromosomes: 2n=24. Ecology: Wet meadows, wet flats, stream and lake margins; Elevation: 2100--3450 m. Bioregional Distribution: c&s SNH; Distribution Outside California: circumboreal, South America, New Zealand. Flowering Time: Jul--Aug Jepson eFlora Author: David J. Keil Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Listed on CNPS Rare Plant Inventory Previous taxon: Triglochin maritima Next taxon: Triglochin scilloides
Botanical illustration including Triglochin palustris
Citation for this treatment: David J. Keil 2012, Triglochin palustris, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=47200, accessed on January 21, 2025.
Citation for the whole project: Jepson Flora Project (eds.) 2025, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on January 21, 2025.
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