disturbed

Showing 73–84 of 101 results

  • Poa bulbosa / bulbous meadow-grass

    • short, tuft-forming grass
    • funny-looking flower stalks... having bulblets instead of florets
    • doesn't produce pollen or seeds

  • Polygonum aviculare / prostrate knotweed

    • long, prostrate stems around a central point
    • copious red-edged white flowers
    • small green leaves
    • along roadsides, parking lots and wherever trampling occurs
    • an ugly weed you'll see on most of your walks around town

  • Populus angustifolia / narrow-leaf poplar

    • a riparian tree also planted for landscaping
    • long, narrow leaves with serrated edges
    • furrowed, grey bark on mature trees; smooth and yellow-ish on young trees
    • flowers are small, grey catkins in very early spring
    • fruits are fluffy white cotton in early-mid summer

  • Potentilla norvegica / rough cinquefoil

    • 5 yellow petals, not fused
    • 5 sepals longer than petals, esp. after flowering
    • numerous stamens and pistils
    • compound leaves with leaflets grouped in 3s
    • prominent veins; toothed margins
    • hairy stems
    • mostly in disturbed areas, including gardens

  • Potentilla recta / sulfur cinquefoil

    • perennial
    • 8 to 30 stems per plant, each with 1-60 flowers
    • petals are light yellow; centers are darker, sulfur yellow
    • shiny, erect hairs arise at right angles to the stems.
    • leaves are alternate and palmately compound, 5-9 leaflets per leaf
    • invades both disturbed and undisturbed habitats

  • Prunella vulgaris / self-heal

    • compact spike of tiny purple, mint-like flowers
    • upper/lower lips purple and white respectively
    • square stems, opposite leaves

  • Pteridium aquilinum / common bracken

    • a fern with large, triangular fronds, up to 4 ft tall
    • fronds subdivided into triangular leaflets
    • herbaceous perennial
    • deciduous with annual regrowth first appearing as fiddleheads in spring
    • wide range of habitats, including full sun

  • Rhamphospermum arvense / Charlock

    • yellow-flowered brassica; flowers larger than most mustards
    • large-ish leaves with toothed margins
    • erect stems; look for a reddish purple ring at stem junctions
    • disturbed areas, road sides and waste places; prefers high nutrients
    • 1" siliques point out or up, but not down

  • Rubus parviflorus / thimbleberry

    • raspberry-like shrub usually in a clump
    • white flowers with many stamens, up to 2.5 inches diameter
    • large, fuzzy maple-like leaves
    • blooms in spring; red, raspberry-like fruit in the fall

  • Rumex acetosella / sheep sorrel

    • long, vertical inflorescences... not compact or well "organized"
    • female plants with red/maroon flowers; males with green/white flowers
    • especially visible when seeds are ripe... red
    • basal rosette of arrowhead shaped leaves
    • disturbed areas, wastelands, poor sites

  • Rumex crispus / curly dock

    • rather large, lance-shaped leaves
    • curly leaf margins, like crisped bacon or "crinkly-wavy"
    • tall flowering stalks with many, many small yellow/green-ish flowers
    • fruits are just like the flowers but deep red
    • widespread and very much a weed

  • Shepherdia canadensis / Canadian buffaloberry

    • deciduous shrub, opposite branches and leaves; understory
    • trichomes (hairs) on lower, often upper surfaces.
    • lower surface has rust-colored scales
    • teeny yellowish flowers before leaves appear; male and female on separate plants
    • red or orange, oval fruits with one stony seed; soapy when crushed

Showing 73–84 of 101 results