Grains Research and Development

Weeds (360 results)

  • Amsinckia

    Amsinckia spp.


    • Mature plant erect to 90 cm, stem branched with long stiff and short downy hairs, flowering stems branched with alternate, stem clasping leaves smaller than rosette leaves.
    • Cotyledons ‘Y’ shaped, round apex, a few fine hairs and small ‘pimples’ on the upper surface.
  • Bellvine

    Ipomea plebeia


    In north Queensland, red flowered bellvine (I. hederifolia) is more common.
    Seed leaves are v-shaped with a broad flat base extending slightly beyond the sides (see also cowvine, and common morning glory). True leaves have scattered hairs, with a notched base, becoming more pronounced as leaves mature. The notched leaf base formed by large basal lobes is very pronounced and regular, unlike in cowvine.

    • Fragrant


    Bifora testiculata


    • Mature plant is erect 20 to 35 cm high with deeply divided leaves.
    • Cotyledons spear shaped, hairless, apex round to pointed.
  • Australian Bindweed

    Convolvulus erubescens


    Seed leaves are nearly square with a rounded base and a deeply notched tip (unlike European bindweed).
    The first three or four true leaves are oblong with rounded or bluntly pointed tips. The next three to four leaves are arrowhead-shaped and similar to European bindweed.

  • Bluebells

    Wahlenbergia sp.


    There are a number of blue bells which are very difficult to separate into different species. Different species can be annual or perennial.
    Seedlings form a rosette. Leaves are alternate or opposite and all occur at the base of the plant or on the lower stem. Perennial species often have a woody rootstock or spread by rhizomes.

  • Boggabri

    Amaranthus mitchellii


    Seed leaves are elongated oval-shaped.
    Mature plants are hairless, yellowish to reddish, erect to semi-erect plant. Leaves may have notched tips.