ruderal

Showing 13–24 of 38 results

  • Helianthus annuus / sunflower

    • tall with big, drooping leaves (up to 15x15 inches)
    • large sunflower like flowers - yellow petals, darker disk
    • disturbed edges and waste areas, roadsides, near crops

  • Hesperis matronalis / dame’s rocket

    • biennial, 3+ feet tall in second year
    • 4-petaled flowers, especially purple or lavender
    • large inflorescences with many flowers
    • garden escapee
    • roadsides, waste places

  • Heterotheca villosa / hairy goldenaster

    • yellow composite with 10-20 ray florets, orange-brown disk
    • hairy leaves and stems
    • blooms throughout season, often densely
    • disturbed and challenging habitats

  • Hyocyamus niger / black henbane

    • highly toxic! including contact dermatitis
    • 5-lobed, funnel-shaped flowers, brownish yellow with purple veins and center; 1.5" across
    • flowers in summer, e.g. warm June, July
    • elliptical leaves, pointy tips, toothed or lobed margins, prominent veins
    • highly disturbed areas: wastelands, field edges etc.

  • Linaria vulgaris / yellow toadflax

    • fine, threadlike leaves, plants up to 3 feet tall
    • flowers similar to snapdragon, pale yellow with orange lower lip, long spur
    • flowers in tight terminal clusters
    • plants typically in patches
    • "noxious" weed in Idaho

  • Linum lewisii / wild blue flax

    • intense blue, 5-petaled flowers
    • red-ish or darker blue veins in petals
    • buds, flowers and developing fruit present at same time
    • narrow, sessile, 1 inch (ish) leaves
    • especially on roadsides and in meadows in the Valley

  • Lotus corniculatus / birds-foot trefoil

    • roadsides and other disturbed areas
    • numerous bright yellow, pea-like flowers
    • three, oval and pointed leaflets
    • seed pods are arranged like toes on a bird's foot

  • Malva neglecta / cheeseweed

    • leaves look like grocery store geraniums (Pelargonium)
    • flowers are small, pink-ish and often buried in the foliage
    • fruits are small (ca. 1/2 in) and round

  • Medicago sativa / alfalfa

    • escaped forage plant
    • bright purple flowers in dense clusters
    • pea-like flowers with broad upper petal, 2 small laterals, keel
    • compound leaves with 3 leaflets, the central one extended on a short stalk
    • disturbed sites - roadsides, full sun

  • Melilotus spp / sweetclover

    • yellow or white, floppy, tubular flowers in long-ish clusters (racemes)
    • 3 small, pointy leaflets with petioles
    • rangy, unkempt branching
    • roadsides, waste places and sometimes in fields, grasslands

  • Oxybasis glauca / oak-leaved goosefoot

    • typically prostrate and small, apart from other plants
    • mudflats and other drying wet areas
    • small, blue-green, small-lobed leaves; often w/ reddish stems
    • teeny clusters of teeny yellow flowers
    • leaves feel cool and damp due to glandular hairs on lower surface

  • Plantago major / broadleaf plantain

Showing 13–24 of 38 results