Burke: Triglochin maritima vs. Triglochin palustris

	Triglochin maritima	Triglochin palustris
	seaside arrow-grass	marsh arrow-grass
Habit	Scapose, herbaceous perennials from woody rhizomes, the scapes 3-12 dm. tall.
Leaves	Leaves from the rhizome, narrowly linear, the blades flattened, 1.5-2.5 mm. wide, blunt; ligules entire or shallowly lobed, 1.5-4 mm. long.
Flowers	Flowers perfect, in compact racemes which are over half the length of the plant; pedicles 2-3 mm. long, ascending; perianth segments 6, greenish or purplish, about 2 mm. long; stamens 6, the anthers sessile in the axils of the perianth segments.
Fruits	Follicles oblong, 5 mm. long, the 6 carpels rounded at the base and with a recurved beak, completely deciduous.

	Triglochin maritima	Triglochin palustris
Flowering time	May-August	June-August
Habitat	Marshy to moist, gravelly areas, mostly were saline or alkaline.	Coastal bogs to inland meadows, mudflats, and gravelly stream margins, often where brackish or alkaline.
Distribution	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, further eastward across the northern U.S. and southern Canada to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, Great Lakes region, and northeastern North America; circumboreal and in South America. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Sensitive in Washington (WANHP)
Sibling taxa	T. concinna, T. palustris, T. scilloides, T. striata	T. concinna, T. maritima, T. scilloides, T. striata
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Triglochin palustris

seaside arrow-grass

marsh arrow-grass

Habit

Scapose, herbaceous perennials from woody rhizomes, the scapes 3-12 dm. tall.

Leaves

Leaves from the rhizome, narrowly linear, the blades flattened, 1.5-2.5 mm. wide, blunt;

ligules entire or shallowly lobed, 1.5-4 mm. long.

Flowers

Flowers perfect, in compact racemes which are over half the length of the plant; pedicles 2-3 mm. long, ascending;

perianth segments 6, greenish or purplish, about 2 mm. long;

stamens 6, the anthers sessile in the axils of the perianth segments.

Fruits

Follicles oblong, 5 mm. long, the 6 carpels rounded at the base and with a recurved beak, completely deciduous.

Triglochin palustris

Flowering time

May-August

June-August

Habitat

Marshy to moist, gravelly areas, mostly were saline or alkaline.

Coastal bogs to inland meadows, mudflats, and gravelly stream margins, often where brackish or alkaline.

Distribution

Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, further eastward across the northern U.S. and southern Canada to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]

Occurring east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains, Great Plains, Great Lakes region, and northeastern North America; circumboreal and in South America.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Conservation status

Not of concern

Sensitive in Washington (WANHP)

Sibling taxa

T. concinna, T. palustris, T. scilloides, T. striata

T. concinna, T. maritima, T. scilloides, T. striata

Web links