non-native

Showing 37–48 of 55 results

  • Phleum pratense / timothy

    • tight, cylindrical flower head
    • probably the most recognizable grass in the Valley
    • pink stamens with prodigious pollen production in summer
    • bulb at base of stem; brown leaf sheath bases

  • Plantago major / broadleaf plantain

  • 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

  • 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

  • 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

  • Silene latifolia / white campion

    • white, 5-petaled flowers with distinctive inflated calyx (bladder)
    • flowers in clusters atop stems
    • whole plant densely hairy
    • widespread on alkaline soils (e.g. the Valley)

  • Sisymbrium altissimum / tumble mustard

    • inflorescence a raceme with yellow, teeny flowers
    • long, thin seed pods (siliques)
    • blooms throughout the spring and summer
    • shoots look like a bunch of sticks glued together
    • dries and breaks off, then tumbles

  • Solanum physalifolium / ground cherry nightshade

    • flowers look like potato or tomato flowers
    • small white, 5 recurved petals
    • clump of yellow stamens protrude from flower
    • triangular leaves with wedge-shaped bases
    • usually sprawling on ground

  • Sonchus arvensis / field sowthistle

    • yellow dandelion-like
    • multiple flowers per stalk
    • often in patches in wet fields
    • leaves spiney but without lobes, clasping the stems
    • often several stems from a single point at the soil level

  • Tanacetum vulgare / tansy

    • yellow, somewhat flattened, button-like flowers
    • pretty clearly in the aster family
    • camphor-ish smell
    • finely divided, fern-like compound leaves

Showing 37–48 of 55 results