Associations
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In Great Britain and/or Ireland:
Foodplant / parasite
Leveillula taurica parasitises Parietaria judaica
Foodplant / spot causer
amphigenous colony of Ramularia anamorph of Ramularia parietariae causes spots on live leaf of Parietaria judaica
Comments
provided by eFloras
Parietaria judaica , which, in North America, is most abundant in scattered localities in California, is the only long-lived perennial species of Parietaria in the flora. Because of confusion in Europe over the correct name, plants in North America have been called P . judaica , P . officinalis of authors, not Linnaeus, P . officinalis var. erecta (Mertens & Koch) Weddell, and P . officinalis var. diffusa (Mertens & Koch) Weddell. For a clarification of the nomenclature and taxonomy of this complex, see C.C. Townsend (1968).
Parietaria judaica was first reported from Louisiana as P . diffusa Mertens & Koch, another name commonly used on herbarium specimens (J.W. Thieret 1969).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Perennial, pubescent to glabrescent, 10-50 cm tall, basally woody herb. Leaves with 0.3-2 cm long, filiform, hairy petiole; lamina lanceolate-ovate or ovate-elliptic, 1-3(4) cm long, 0.5-2.0 (-2.5) cm broad, subtruncate to cuneate or rarely subcordate at the base, apex acute, appressed pubescent to glabrescent. Cymose flower clusters compact, few to many-flowered, subsessile to sessile, solitary, axillary. Flowers greenish, mostly bisexual, c. 3 mm across; bracts ovate-lanceolate or elliptic, 2.5-3 mm long, enlarged in fruit, subconnate at the base, obtuse. Calyx c. 3 mm long, lobes inflexed. Achenes ovoid, 1.5-2 mm long, brown, shining.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Herbs , perennial from crown, 1-8dm. Stems ascending, erect, or decumbent. Leaf blades narrowly to broadly elliptic, lance-elliptic, or ovate, 1.3-9 × 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 × 0.6-0.9 mm, apex acute, mucro absent or minute; stipe centered, on cylindric base.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
S. Europe, N. Africa, C. Asia, Afghanistan, Himalaya (Kashmir, Nepal), Siberia, Tibet, W. China.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Distribution: India, Pakistan, Afghanistan, westwards to North Africa and southern Europe.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
introduced; Calif., Fla., La., Mich., N.J., N.Y., Pa., Tex.; Eurasia; n Africa.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Elevation Range
provided by eFloras
750 m
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Flower/Fruit
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Fl.Per.: July-August.
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Flowering/Fruiting
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Flowering all year, with peak in late winter-spring.
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Habitat
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Cracks in sidewalks, ballast heaps, waste places, frequently about ports and coastal areas; 0-200m.
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Parietaria judaica
provided by wikipedia EN
Parietaria judaica, with common names spreading pellitory or pellitory of the wall, is a species of herbaceous perennial plant in the family Urticaceae. The plant's pollen is highly allergenic.[2] In Australia it is also known as asthma weed, due to the high incidence of allergy.[3] It is unrelated to the herb pellitory (Anacyclus pyrethrum). It is easily confused with the very similar species Parietaria officinalis.[4]
Etymology
Parietaria (Latin): Wall-dweller (a name used by the Roman naturalist and philosopher Pliny). Judaica (Latin): Of Judaea, Jewish, from Palestine.[5]
Description
Close-up on flowers of
Parietaria judaica
The biological form of Parietaria judaica is hemicryptophyte scapose, as its overwintering buds are situated just below the soil surface and the floral axis is more or less erect. This plant has pink or red hairy stems, woody at the base. It reaches on average a height of 60 centimetres (24 in). The leaves are hairy, alternate, simple, entire and green, with smooth margins. The tiny white or pink flowers are attached to the stems. They are bisexual or unisexual, produced in clusters of three to many together in the leaf axils. The nickname sticky-weed is due to the adherent quality of the flowers and of the hairy stems; unlike some related species of the family Urticaceae, the hairs do not sting. The flowering period extends from spring through autumn, when it produces large amounts of pollen. The fruits are blackish achenes.
Distribution
Parietaria judaica is a native of Europe, central and western Asia and northern Africa.[6]
Allergy
Causes allergic reactions in some people.[6][7]
Habitat
Generally considered a weed, it is often found on roadsides, along dry stone walls and in cracks of buildings and rock faces. However it might be useful in a habitat garden within its native range, as it is a larval food plant for red admiral butterflies (Vanessa atalanta). Ideal habitats are dry and at an altitude of 0–1,000 metres (0–3,281 ft) above sea level. This species is wind pollinated.[8] Seeds are adhesive and transported by insects as well as other animals, people and machines.[9]
Gallery
Parietaria judaica habit on wall
Plant of Parietaria judaica
Stem and flowers of Parietaria judaica
Leaf of Parietaria judaica
References
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^ "Parietaria judaica", The Plant List, retrieved 2013-11-02
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^ Stumvoll S, Westritschnig K, Lidholm J, Spitzauer S, Colombo P, Duro G, Kraft D, Geraci D, Valenta R (May 2003). "Identification of cross-reactive and genuine Parietaria judaica pollen allergens". J. Allergy Clin. Immunol. 111 (5): 974–9. doi:10.1067/mai.2003.1376. PMID 12743560.
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^ Sydney Weeds Archived 2009-11-16 at the Wayback Machine
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^ Townsend, C.C. (1968). "Parietaria officinalis and P. judaica" (PDF). Watsonia. 6: 6. Archived from the original (PDF) on 2011-07-26.
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^ "Species Description: Parietaria judaica". CretanFlora.
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^ a b "Pellitory (Parietaria judaica)". NSW WeedWise. NSW Department of Industry.
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^ Ferrer, M.; Burches, E.; Peláez, A.; Muñoz, A.; Hernández, D.; Basomba, A.; Enrique, E.; Alonso, R.; Cisteró-Bahima, A.; Martín, S.; Rico, P.; Gandarias, B. (2005). "Double-blind, placebo-controlled study of immunotherapy with Parietaria judaica: Clinical efficacy and tolerance" (PDF). J Invest Allergol Clin Immunol. 15 (4): 283–292. PMID 16433210.
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^ "Parietaria judaica". Plants for a Future.
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^ "Parietaria judaica". New Zealand Plant Conservation Network.
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Parietaria judaica: Brief Summary
provided by wikipedia EN
Parietaria judaica, with common names spreading pellitory or pellitory of the wall, is a species of herbaceous perennial plant in the family Urticaceae. The plant's pollen is highly allergenic. In Australia it is also known as asthma weed, due to the high incidence of allergy. It is unrelated to the herb pellitory (Anacyclus pyrethrum). It is easily confused with the very similar species Parietaria officinalis.
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