Pacific Pests, Pathogens, Weeds & Pesticides - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Sanchezia (538)

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Photo 1. Thicket of sanchezia, Sanchezia parvibracteata.

Photo 2. Distinct white central midribs and secondary veins on leaves of sanchezia, Sanchezia parvibracteata.

Photo 3. Cluster of flowers of sanchezia, Sanchezia parvibracteata, to show the long tube-like yellow to orange corolla, with stamens, and the leaf-like sepals at the base.

Summary

  • Worldwide distribution. In Australia, Cook Islands, FSM, New Caledonia, Niue, Palau, Tonga.
  • Invasive tropics and subtropics. Dense stands in moist to wet native and secondary forests, forest edges, along streams, rivers. Especially in lowland areas, up to 1000 masl. Biodiversity threat to native forests.
  • Erect shrub to 2 m. Stem 4-angled, leaves opposite, oval, large, white mid-ribs, characteristic white/yellow veins. Flowers, in clusters, red leaf-like calyx around 4-5 cm yellow/orange tube with two protruding stamens.
  • Spread: vegetateivly propagated. Vine pieces in garden waste, moving water. Not seeds. Via international trade as an ornamental.
  • Biosecurity: high risk; garden and house plant; available on Internet.
  • Natural enemies: none.
  • Cultural: hand-pulling; collect stem pieces and burn. Avoid using topsoil where grown previously.
  • Chemical control: In Australia, fluroxypyr; triclopyr + picloram; triclopyr + picloram + aminopyralid. Permit for non-agricultural areas, domestic and commercial spaces, bushland, native forests, roadsides, wastelands, wetlands, and coastal.

Common Name

Sanchezia; it is also known as shrubby white vein.

Scientific Name

Sanchezia parvibracteata. It is a member of the Acanthaceae family.

AUTHOR Grahame Jackson & Konrad Englberger
Information from Sanchezia (2020) Business Queensland, Queensland Government. (https://www.business.qld.gov.au/industries/farms-fishing-forestry/agriculture/biosecurity/plants/invasive/other/sanchezia); and CABI (2014) Sanchezia parvibracteata (sanchezia). Crop Protection Compendium. (https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.120290); and from Sanchezia Sanchezia parvibracteata (2020) The State of Queensland, Department of Agriculture and Fisheries. (https://www.daf.qld.gov.au/__data/assets/pdf_file/0020/61805/sanchezia.pdf). Photo 1 Konrad Englberger, Pohnpei, Federated States of Micronesia. Photos 2&3 Gerald McCormack, Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. (http://cookislands.bishopmuseum.org/).

Produced with support from the Australian Centre for International Agricultural Research under project HORT/2016/185: Responding to emerging pest and disease threats to horticulture in the Pacific islands, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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