Burke: Echinochloa crus-pavonis vs. Echinochloa crus-galli

	Echinochloa crus-pavonis	Echinochloa crus-galli
	guleaf barnyard-grass	barnyard grass, or large barnyard grass
Habit		Annual, the culms decumbent to erect, pith-filled or hollow, 6-16 dm. tall, the nodes glabrous.
Leaves		Sheaths open, somewhat compressed; ligules none; blades flat, 4-16 mm. broad.
Flowers		Inflorescence a stiff panicle, the branches spreading to erect, at least 3 cm. long; spikelets subsessile, 3-4 mm. long, borne along one side of the panicle branches; spikelets 2-flowered, the lower flower sterile; glumes unequal, 3-nerved, unawned; sterile lemma acuminate and awn-tipped, the awn sometimes up to 30 mm. long, about equal to the second glume, the palea membranous, about half as long as the lemma; fertile lemma and palea acuminate, hardened, unawned; stamens 3.

	Echinochloa crus-pavonis	Echinochloa crus-galli
Flowering time		June-October
Habitat		Fields, roadsides, meadows, wastelots, and other disturbed areas, often where moist or wet.
Distribution	[WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Introduced	Introduced from Eurasia
Conservation status	Not of concern	Not of concern
Sibling taxa	E. colona, E. crus-galli, E. muricata	E. colona, E. crus-pavonis, E. muricata
Subordinate taxa	E. crus-pavonis var. crus-pavonis
Web links	Local floras: OR, WA Local Web sites: 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

Echinochloa crus-pavonis

Echinochloa crus-galli

guleaf barnyard-grass

barnyard grass, or large barnyard grass

Habit

Annual, the culms decumbent to erect, pith-filled or hollow, 6-16 dm. tall, the nodes glabrous.

Leaves

Sheaths open, somewhat compressed;

ligules none;

blades flat, 4-16 mm. broad.

Flowers

Inflorescence a stiff panicle, the branches spreading to erect, at least 3 cm. long;

spikelets subsessile, 3-4 mm. long, borne along one side of the panicle branches;

spikelets 2-flowered, the lower flower sterile;

glumes unequal, 3-nerved, unawned;

sterile lemma acuminate and awn-tipped, the awn sometimes up to 30 mm. long, about equal to the second glume, the palea membranous, about half as long as the lemma;

fertile lemma and palea acuminate, hardened, unawned;

stamens 3.