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Showing 145–156 of 327 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

  • Heliomeris multiflora / showy goldeneye

    • a "Doggone" Yellow Composite (DYC) with 5-14 ray florets; golden dome of disc florets
    • multi-stemmed perennial forms clumps
    • often seen in profusion (but not always)
    • long, thin, lanceolate to linear leaves; maybe with a few small teeth along the edges
    • leaves have a strong midrib vein and distinct side veins

  • Heracleum maximum / cow parsnip

    • very tall - stands above most other herbs and forbs
    • huge leaves with clasping sheaths at the stem junction
    • leaves lobed and like a very large maple
    • huge flat umbels with white flowers
    • grooved, woolly, stout stem

  • 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

  • Hesperostipa comata / needle and thread

    • widely spaced bunchgrass
    • glossy leaves, smooth stem
    • narrow inflorescence with long awns (hairs)
    • sharp, needle-like seed retaining the awn
    • drought tolerant

  • 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

  • Heuchera parvifolia / littleleaf alumroot

    • subalpine, alpine... on rocks
    • clusters of round or kidney-shaped leaves
    • leaves lobed, all basal (no stem leaves)
    • inflorescences tower over leaves
    • clumps of teeny, yellow flowers along a spike-like flowering stalk

  • Hippuris vulgaris / common mare’s tail

    • two possible forms - emergent and submerged
    • submerged looks like a tail... thick with whorls of long-ish leaves
    • emergent looks like Equisetum gone wild... whorls of many leaves
    • both forms may be present
    • mostly in river backwaters or small streams running through the fen

  • Hordeum jubatum / foxtail barley

    • attractive roadside grass
    • long, silky, glistening awns; red, green, purple-ish
    • awns and bracts are sharp and barbed... potentially dangerous to dogs

  • Huechera cylindrica / coral bells

    • oval-shaped leaves growing in clumps/tufts - all basal
    • leaf edges with small lobes or teeth
    • teeny pale yellow, creamy, green or pink flowers on a leafless stem
    • flowers more dense at top of spike than lower down
    • in woods, on cliff-side ledges, rocky slopes and subalpine meadows

  • Hydrophyllum capitatum / ballhead waterleaf

    • leaves to 10" tall, deeply lobed (7-11 lobes)
    • globe of purple-blue-white flowers below the leaves or at ground level
    • flowers are fuzzy while still in bud
    • rocky, shady, seasonally moist sites

  • 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.

Showing 145–156 of 327 results