L., Poaceae |
Present on Pacific Islands? yes
Primarily a threat at high elevations? no
Common name(s): [more details]
English: bristly dogstail grass, rough dog's-tail |
Habit: herb
Description: "Annual; caespitose. Culms erect, or geniculately ascending; 10-100 cm long; 2-6 -noded. Leaf-sheaths without keel; glabrous on surface. Ligule an eciliate membrane; 5-10 mm long; obtuse. Leaf-blades 5-20 cm long; 3-10 mm wide. Leaf-blade surface scabrous; rough adaxially. Inflorescence a panicle. Panicle contracted; oblong, or ovate, or globose; secund; 1-8 cm long; 1-2 cm wide. Panicle branches smooth. Spikelets in pairs, or in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets sessile; 1-2 in the cluster. Sterile spikeltes: Companion sterile spikelets well-developed; containing empty lemmas; obovate; laterally compressed; 7-13 mm long; longer than fertile; persistent. Companion sterile spikelet lemmas 6-18; exserted from glumes; 2.5-5 mm long (lanceolate); 1-awned; with 1.4-3 mm long awn. Fertile spikelets: Spikelets comprising 1-5 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 8-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Glumes persistent; similar; reaching apex of florets. Lower glume lanceolate; 7-12 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex attenuate. Upper glume lanceolate; 7-12 mm long; 1.5 length of adjacent fertile lemma; membranous; 1-keeled; 2 -veined. Upper glume apex attenuate. Florets: Fertile lemma ovate; 5-7 mm long; coriaceous; without keel; 5 -veined. Lemma surface scabrous; rough above. Lemma apex entire, or dentate; 2 -fid; obtuse; awned; 1 -awned. Principal lemma awn apical, or from a sinus; 6-16 mm long overall; limb scabrous. Rhachilla extension 0.25 length of fertile floret. Flower: Anthers 3; 2.5-4 mm long. Caryopsis with adherent pericarp; oblong; 3-4 mm long. Embryo 0.2 length of caryopsis. Hilum punctiform" (GrassBase).
Description from Flora of New Zealand.
Habitat/ecology: In New Zealand, "on roadsides, waste land, in pasture and crops, and on hillsides in grassland; lowland to montane" (Edgar & Connor, 2000; p. 94).
Propagation: Seed
Native range: Canary and Madeira Islands, northern Africa, Europe, central and western Asia; naturalized elsewhere (GRIN).
Presence:
Pacific | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más a Tierra (Robinson Crusoe Island) |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 553) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Atkinson, Rachel/Sawyer, John (2011) |
Chile (offshore islands)
Juan Fernández Islands |
Isla Más Afuera (Alejandro Selkirk Island) |
introduced
invasive |
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 553) |
Pacific Rim | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
Australia
Australia (continental) |
New South Wales |
introduced
invasive |
National Herbarium of New South Wales (2013)
"Weed of waste and cultivated areas". |
British Columbia (province of Canada)
Province of British Columbia |
Canada (British Columbia) |
introduced
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
Japan
Japan |
Japan |
introduced
|
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 192) |
New Zealand
New Zealand |
New Zealand (country) |
introduced
invasive |
Edgar, E./Connor, H. (2000) (p. 94) |
United States (west coast)
United States (west coast states) |
USA (Oregon) |
introduced
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
United States (west coast)
United States (west coast states) |
USA (California) |
introduced
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
United States (west coast)
United States (west coast states) |
USA (Washington) |
introduced
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
Also reported from | |||
Country/Terr./St. & Island group |
Location |
Cited status &
Cited as invasive & Cited as cultivated & Cited as aboriginal introduction? |
Reference &
Comments |
United States (continental except west coast)
United States (other states) |
United States (other states) |
introduced
|
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) |
Control: Herbicide resistance in Chile.