disturbed

Showing 13–24 of 75 results

  • Cardamine hirsute / hairy bittercress

    • small brassica/crucifer with compound leaves
    • teeny white, 4 petal flowers with 4 stamens in racemic clumps
    • a widespread weed, including gardens and lawns

  • Carduus nutans / musk thistle

    • quite large, very purple flower heads
    • spiny everything... leaves, stems, bracts
    • biennial - large rosette of nasty leaves in first year
    • dandelion-like fruit that flies away like the down of a thistle
    • disturbed lands... pastures, wastelands, roadsides, construction sites

  • Ceanothus velutinus / snowbrush

    • waist-high, exposed evergreen shrub
    • aromatic in hot weather or when leaves are crushed
    • shiny (sticky) green leaves, ca. 3"; 3 prominent veins
    • 4" clusters of teeny white/cream flowers
    • in disturbed areas, particularly burned areas

  • Centaurea maculosa / spotted knapweed

    • "vibrant" pink flowers
    • dark tips on the sepals ("bud scales") - the "spotted" in the name
    • biennial - rosette of leaves in first year
    • officially a noxious weed

  • Chamerion angustifolium / fireweed

    • bright pink flowers on tall inflorescence (raceme)
    • flowers mature from bottom to top
    • four petals
    • spiral leaf arrangement - lance-shaped leaves have smooth edges
    • pod-like seed capsule releases seeds to the wind

  • Chenopodium album / lamb’s quarters

    • green, nobbly inflorescence - many nob-like flowers
    • leaves grey-green, more or less triangular
    • leaves may feel cool to the touch
    • widespread weed, especially in disturbed habitats

  • Cirsium arvense / Canada thistle

    • purple or lavender clearly-thistle flower heads
    • multiple small flower heads per stem
    • deeply lobed, spiny leaves, but stems not spiny
    • clonal and perennial
    • in clumps or along roads, sometimes quite large/long

  • Cirsium vulgare / bull thistle

    • very nasty spines all over, including stems
    • purple flower head over pear/egg-shaped narrow, spiny bracts
    • fruits are thistle-downy
    • disturbed areas, but also forest gaps, stream sides and seeps

  • Convulvulus arvensis / field bindweed

    • prostrate and twining vine with white "morning-glory" flowers
    • may be so dense as to choke out other plants
    • roadsides, agricultural fields, waste areas
    • "noxious" in Idaho

  • Corydalis aurea / scrambled eggs

    • prostrate herb, up to 15" tall
    • moist but well-drained soils, including on roadsides
    • yellow tubular flowers, with spurs
    • highly dissected leaves, blue-grey except when young
    • fruits are pod-like, resembling peas or beans

  • Cynoglossum officinale / houndstongue

    • reddish-purple flowers in upper leaf axils
    • forms basal rosette with hairy leaves in first year
    • stem leaves lance shaped, hairy, rough
    • fruit - small nutlets with barbs or hooks

  • Delphinium bicolor / low larkspur

    • short plant with a spike of purple flowers
    • individual flowers have a pronounced spur out the back
    • leaves are few, round, deeply lobed, about the size of a quarter
    • widespread throughout the valley and on the hills
    • appears and blooms soon after snowmelt

Showing 13–24 of 75 results