Parietaria judaica L., Urticaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Parietaria diffusa Mert. & W. D. J. Koch

Common name(s): [more details]

English: asthma weed, pellitory, pellitory-of-the-wall, spreading pellitory

Habit:  herb

Description:  "Herbs, perennial from crown, 1-8 dm. Stems ascending, erect, or decumbent. Leaf blades narrowly to broadly elliptic, lance-elliptic, or ovate, 1.3-9 x 0.8-4.5 cm, base attenuate, cuneate, or broadly rounded, apex abruptly acuminate to long-attenuate. Flowers: involucral bracts 1.5-2.5 mm; tepals ca. 2-3.5 mm, longer than bracts. Achenes dark brown, symmetric, 1-1.2 x 0.6-0.9 mm, apex acute, mucro absent or minute; stipe centered, on cylindric base"  (Flora of North America online).

Description from Flora of Australia online.

Habitat/ecology:  In New Zealand, "locally established in gardens, waste places, at forest margins and on coastal cliffs"  Webb et al., 1988; p. 1263).  In the United States, "cracks in sidewalks, ballast heaps, waste places, frequently about ports and coastal areas; 0-200 m"  (Flora of North America online).

Propagation:  Seed

Native range:  Canary and Madeira Islands, Europe, northern Africa, Asia east to Nepal (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	Cuevas, Jaime G./Marticorena, Alicia/Cavieres, Lohengrin A. (2004) (p. 536) Vouchers cited: CONC 158070, JF 327
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 cultivated	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 556)

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	Australian Biological Resources Study (2011) Vouchers cited: E. McBarron 22393 (NSW), R. Coveny 7609 (NSW)
Australia Australia (continental)	New South Wales	introduced invasive	National Herbarium of New South Wales (2011) "Naturalized in the Sydney area as a common roadside and garden weed".
Chile (continental) Chile	Chile (Republic of)	introduced	Cuevas, Jaime G./Marticorena, Alicia/Cavieres, Lohengrin A. (2004) (p. 536)
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 1263)
United States (west coast) United States (west coast states)	USA (California)	introduced invasive	Flora of North America Editorial Committee, eds. (2011)
United States (west coast) United States (west coast states)	USA (Washington)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)

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. (2011)
United States (continental except west coast) United States (other states)	USA (Florida)	introduced invasive	Flora of North America Editorial Committee, eds. (2011)

Additional information:
Fact sheet from Lane Cove Council, Australia.
Fact sheet from Campbelltown City Council, Australia (PDF format).
Information from Weeds Australia.

Additional online information about Parietaria judaica is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Parietaria judaica as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Parietaria judaica may be available from the Germplasm Resources Information Network (GRIN).

References:

Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.

Australian Biological Resources Study. 2011. Flora of Australia Online. Australian Biological Resources Study, Canberra.

Cuevas, Jaime G./Marticorena, Alicia/Cavieres, Lohengrin A. 2004. New additions to the introduced flora of the Juan Fernández Islands: origin, distribution, life history traits, and potential of invasion. Revista Chilene de Histora Natural 77:523-538.

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

Flora of North America Editorial Committee, eds. 2011. Flora of North America North of Mexico (online edition).

National Herbarium of New South Wales. 2011. PlantNet: New South Wales Flora online. The Plant Information Network System of the Botanic Gardens Trust Version 2.0. Online resource.

U. S. Government. 2011. Integrated Taxonomic Information System (ITIS) (on-line resource).

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. 1988. Flora of New Zealand, Volume IV: Naturalised pteridophytes, gymnosperms, dicotyledons. Botany Division, DSIR, Christchurch. 1365 pp.