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Schkuhria pinnata (Lam.) Kuntze ex Thell.

Brief Summary

    Schkuhria pinnata: Brief Summary
    provided by wikipedia

    Schkuhria pinnata aka canchalagua and dwarf Mexican marigold, is a small, dainty, pioneer annual herb belonging to the Asteraceae family and widespread in the tropics. It is regarded as a naturalised weed with low ecological impact.

    Reaching 30-60 cm in height, this species is found as a pioneer on disturbed ground such as roadsides and ploughed lands. Leaves are mainly pinnatisect, with the upper leaves simple and filiform. The upper leaf surface is narrowly grooved, while both leaf surfaces are pitted with numerous small glands. Its capitula are numerous, terminal and small, with a solitary ray floret, its ligule 1.5–2 mm long and yellow, and 4-6 disc florets. Corollas are yellow to white sometimes with a purple tinge. Bracts are obovate, with a hyaline apex, while margins are minutely ciliate and glandular-punctate. Achenes are narrow-turbinate, 4-angled and some 4 mm long; there are 8 membranous pappus scales, darkly striated at apex.[citation needed]

    The plant is native to South America, normally found in drier mountainous regions of 2000 - 3000 meters in elevation, and growing abundantly in the inter-Andean valleys. It is currently found in Latin America, Mexico, Africa, and in the southern United States.

Comprehensive Description

    Schkuhria pinnata
    provided by wikipedia

    Schkuhria pinnata aka canchalagua and dwarf Mexican marigold, is a small, dainty, pioneer annual herb belonging to the Asteraceae family and widespread in the tropics. It is regarded as a naturalised weed with low ecological impact.

    Reaching 30-60 cm in height, this species is found as a pioneer on disturbed ground such as roadsides and ploughed lands. Leaves are mainly pinnatisect, with the upper leaves simple and filiform. The upper leaf surface is narrowly grooved, while both leaf surfaces are pitted with numerous small glands. Its capitula are numerous, terminal and small, with a solitary ray floret, its ligule 1.5–2 mm long and yellow, and 4-6 disc florets. Corollas are yellow to white sometimes with a purple tinge. Bracts are obovate, with a hyaline apex, while margins are minutely ciliate and glandular-punctate. Achenes are narrow-turbinate, 4-angled and some 4 mm long; there are 8 membranous pappus scales, darkly striated at apex.[citation needed]

    The plant is native to South America, normally found in drier mountainous regions of 2000 - 3000 meters in elevation, and growing abundantly in the inter-Andean valleys. It is currently found in Latin America, Mexico, Africa, and in the southern United States.[1]

    Medicinal uses

    The Ketchwa indigenous people of the Andes have traditionally used this plant to treat a large number of conditions and ailments - they have used it as a bactericide in open wounds, to treat acne, malaria and inflammation, and as a blood purifier and diuretic. [2]

    Schkuhria pinnata exhibited high antibacterial activity while in an anti-inflammatory assay dichloromethane extracts from its shoots selectively inhibited COX-1.[3]

    References

    1. ^ http://www.rain-tree.com/canchalagua.htm#.Wnmlvq6Wb4Y[full citation needed]
    2. ^ https://www.researchgate.net/publication/228108025_Peruvian_plants_canchalagua_Schkuhria_pinnata_Lam_Kuntze_hercampuri_Gentianella_alborosea_Gilg_Fabris_and_corpus_way_Gentianella_bicolor_Wedd_J_Pringle[full citation needed]
    3. ^ Luseba, D; Elgorashi, E.E; Ntloedibe, D.T; Van Staden, J (2007). "Antibacterial, anti-inflammatory and mutagenic effects of some medicinal plants used in South Africa for the treatment of wounds and retained placenta in livestock". South African Journal of Botany. 73 (3): 378–83. doi:10.1016/j.sajb.2007.03.003..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}

Morphology

    Comments
    provided by eFloras
    Schkuhria pinnata has been noted as persisting after plantings in Maine. Schkuhria pinnata (Lamarck) Kuntze var. wislizeni (A. Gray) B. L. Turner is a superfluous, illegitimate, name intended to refer to North American plants of S. pinnata.
    Description
    provided by eFloras
    Plants (10–)25–40(–70+) cm. Stems usually strictly erect. Leaves mostly 10–25(–40) mm; blades linear or lobed (lobes 3–7+, linear to filiform), faces scaberulous (hairs ± conic, 0.1 mm) and gland-dotted. Peduncles mostly (3–)8–25(–30+) mm. Involucres obconic or obpyramidal, 4–6+ mm (each often subtended by 1–3, lanceolate bractlets). Phyllaries 4–6, green to purple, weakly carinate, oblanceolate to obovate, gland-dotted, otherwise usually glabrous. Ray florets usually 1(–2), sometimes 0; corollas yellow to white, laminae 0.8–1.2+ mm. Disc florets 2–6(–8+); corollas yellow (sometimes with purple), 1.5–2 mm. Cypselae blackish to buff, 3–4 mm, hirsutulous to villous, especially on angles; pappi of 8 white to tawny or purplish, obovate-rounded or elliptic to lanceolate scales 1–2.5 mm (sometimes some or all ± aristate). 2n = 20, 22, 40.

Diagnostic Description

    Synonym
    provided by eFloras
    Pectis pinnata Lamarck, J. Hist. Nat. 2: 150, plate 31. 1792; Schkuhria anthemoidea (de Candolle) J. M. Coulter; S. anthemoidea var. wislizeni (A. Gray) Heiser; S. anthemoidea var. wrightii (A. Gray) Heiser; S. virgata (La Llave & Lexarza) de Candolle; S. wislizeni A. Gray; S. wislizeni var. frustrata S. F. Blake; S. wislizeni var. wrightii (A. Gray) S. F. Blake