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Showing 277–288 of 327 results

  • Senecio triangularis / arrowleaf ragwort

    • leafy stems with arrow-shaped, coarse-toothed leaves
    • often in large patches on moist soil
    • clusters of yellow flower heads, each with 8-ish untidy ray florets
    • numerous green involucral bracts, sometimes with black tips
    • largest leaves occur mid-stem

  • 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

  • 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

  • Sisyrinchium idahoense / Idaho blue-eyed grass

    • six blue, notched "petals" with yellow center
    • single flower; naked stem
    • narrow, grass-like, basal leaves
    • fens and wet meadows

  • 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

  • Solidago canadensis / goldenrod

    • large sprays of yellow flowers in late summer and fall
    • often tall and in large colonies
    • lance-shaped, toothed leaves
    • mostly (but not always) in disturbed areas

  • Solidago missouriensis / Missouri goldenrod

    • perennial herb, up to 40" tall
    • inflorescence is a branching panicle with many (≥200) yellow flower heads
    • involucres are ¼ long with 3 or 4 layers of narrow, pointed, hairless, yellow-green bracts
    • leaves are thin and lanceolate, upright and rigid with prominent midribs
    • upper leaves have pronounced but small teeth

  • Solidago multiradiata / alpine goldenrod

    • the only (?) goldenrod at alpine altitudes
    • clusters of 5-100 small, yellow composite flowers with a dozen-ish rays and 3 doz disc florets
    • medium green lance/spoon shaped leaves, bigger at base of the plants; toothed/hairy edges

  • 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

  • Sorbus scopulina / western mountain ash

    • moderate sized shrub with pinnately compound leaves
    • 9-13 leaflets per leaf (usually)
    • teeny white flowers in large rounded clusters
    • yellow berries in August become bright red in September
    • rocky hillsides, creek sides, open woods

  • Spiraea betulifolia / white spiraea

    • short (1-3 feet), dominant shrub in forest understory
    • rounded leaves with toothed outer margins
    • teeny flowers in flat-topped clusters up to 5" across
    • flowers are white with 5 petals and many stamens

Showing 277–288 of 327 results