Bloom Clock/Keys/Southeastern Pennsylvania/September/Yellow Flowers

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The plants pictured below have been recorded as blooming during the month of September in Southeastern Pennsylvania.


Solidago canadensis

Inflorescence and habit

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Profile for Solidago canadensis (Canada Goldenrod)
Identifying Characteristics
Habit:Erect, colonizing herbaceous plant
Flowers:Yellow heads held on compound panicles
Foliage:Simple
Life Cycle: Perennial
Similar Plants:Solidago gigantea (shoot axis without hairs)
Recent Logs[edit]

Global data:

Regional data and additional images for Solidago canadensis

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Rudbeckia hirta

Flowering plant

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Profile for Rudbeckia hirta (Gloriosa Daisy)
Identifying Characteristics
Habit:Upright herbaceous plant
Flowers:Heads with brown disk florets and yellow or orange rays
Stem:Hairy
Life Cycle: Perennial
Similar Plants:easily confused with Rudbeckia fulgida
Recent Logs[edit]


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Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall, Late Fall

Regional data and additional images for Rudbeckia hirta

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Oxalis stricta

Flowers and foliage

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Profile for Oxalis stricta (Common Yellow Woodsorrel)
Identifying Characteristics
Habit:Upright
Flowers:5 petals, yellow
Foliage:Trifoliate, leaflets heart-shaped
Stem:Slender, green
Fruit:Explosive capsules
Life Cycle: Annual
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Oxalis stricta

Oenothera

Flower of O. macrocarpa

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Profile for Oenothera (Evening Primrose)
Identifying Characteristics
Habit:Erect
Flowers:Yellow, 4 petals
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Oenothera

Impatiens capensis

Flowers and foliage

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Profile for Impatiens capensis (Jewelweed)
Identifying Characteristics
Habit:Erect
Growing Conditions:Moist soils
Fruit:Explosive capsules
Life Cycle: Annual
Recent Logs[edit]

Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Impatiens capensis

Hemerocallis

Flower of H. fulva, one of the most commonly encountered daylilies

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Profile for Hemerocallis (Daylily)
Identifying Characteristics
Habit:clumping herbaceous plant
Flowers:3 petals and 3 sepals nearly equal. Each flower lasts only one day.
Foliage:Basal, straplike
Life Cycle: Perennial
Recent Logs[edit]

Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Hemerocallis

Chelidonium majus

Flowers, foliage, and buds

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Profile for Chelidonium majus (Greater Celandine)
Identifying Characteristics
Habit:Upright herbaceous plant
Flowers:4 showy petals, many anthers, yellow.
Foliage:Pinnately compound with lobed leaflets.
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Chelidonium majus

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Tagetes patula

Heads

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Profile for Tagetes patula (French Marigold)
Identifying Characteristics
Recent Logs[edit]

Global data:

Regional data and additional images for Tagetes patula

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Miscanthus sinensis

Florets

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Profile for Miscanthus sinensis (Miscanthus)
Identifying Characteristics
Recent Logs[edit]


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Global data:

Regional data and additional images for Miscanthus sinensis

Viola x wittrockiana

A Purple-flowered variety

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Profile for Viola x wittrockiana (Pansy)
Identifying Characteristics
Habit:Short-lived, low-growing perennial, with mostly cool season blooms
Higher taxa:Viola


Recent Logs[edit]

Global data:
Temperate zone season(s): Early Spring, Mid Spring, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Viola x wittrockiana

Tanacetum vulgare

Heads

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Profile for Tanacetum vulgare (Tansy)
Identifying Characteristics
Habit:upright herbaceous plant
Flowers:Yellow heads, mostly discoid, on branched inflorescences
Life Cycle: perennial
Recent Logs[edit]


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Global data:

Regional data and additional images for Tanacetum vulgare

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Agrimonia

Flowers of A. eupatoria

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Profile for Agrimonia (Agrimony)
Identifying Characteristics
Recent Logs[edit]

Global data:

Regional data and additional images for Agrimonia

Oxalis corniculata

Plant with flowers, showing the purple foliage

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Profile for Oxalis corniculata (Creeping Woodsorrel)
Identifying Characteristics
Habit:Creeping, rooting at the nodes
Flowers:Yellow, 5-petaled
Foliage:Trifoliate with heart-shaped leaflets, usually purple
Fruit:Explosive capsules
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Oxalis corniculata

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Coreopsis verticillata

Plant in full flower

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Profile for Coreopsis verticillata (Threadleaf Coreopsis)
Identifying Characteristics
Habit:Colonizing herbaceous perennial
Flowers:Heads
Foliage:Narrow
Life Cycle: Perennial
Recent Logs[edit]

Global data:

Regional data and additional images for Coreopsis verticillata

Dahlia

Flower of cv. 'Autumn Fairy'

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Profile for Dahlia (Dahlia)
Identifying Characteristics
Recent Logs[edit]


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Global data:

Regional data and additional images for Dahlia

Corydalis lutea

Flowers and foliage

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Profile for Corydalis lutea (Yellow Corydalis)
Identifying Characteristics
Habit:Mound-forming, colonizing herbaceous plant
Flowers:Tubular, spurred, yellow
Foliage:Pinnately compound, somewhat glaucus
Stem:Weak, sappy
Fruit:Explosive pods
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Corydalis lutea

Solidago

Flowers on S. Gigantea

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Profile for Solidago (Goldenrod)
Identifying Characteristics
Subclass plants:Solidago canadensis, Solidago gigantea


Recent Logs[edit]

Global data:
Temperate zone season(s): Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Solidago

Taraxacum officinale

Head

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Profile for Taraxacum officinale (Common Dandelion)
Identifying Characteristics
Habit:rosette-forming herbaceous plant with a long taproot
Flowers:Head, flowers are all ray-like
Foliage:Basal only, pinnately lobed
Stem:flower stems are hollow with a milky sap
Scent:mild, "sunny"
Growing Conditions:sunny and partly-shaded, well drained soils, drought intolerant
Fruit:achene with a silky pappus
Similar Plants:Hypochoeris radicata, Sonchus
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Winter, Late Winter, Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Taraxacum officinale

Asclepias curassavica

Inflorescence

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Profile for Asclepias curassavica (Milkweed)
Identifying Characteristics
Recent Logs[edit]

Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Asclepias curassavica

Digitalis lutea

Spike

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Profile for Digitalis lutea (Yellow Foxglove)
Identifying Characteristics
Habit:Upright herbaceous plant
Flowers:On spikes, tubular and yellow
Foliage:Simple
Life Cycle: Perennial
Recent Logs[edit]

Global data:

Regional data and additional images for Digitalis lutea

Helianthus x laetiflorus

Head

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Profile for Helianthus x laetiflorus (Sunflower)
Identifying Characteristics
Habit:erect, clump-forming
Recent Logs[edit]

Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Helianthus x laetiflorus

Lonicera japonica

Flowers and foliage

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Profile for Lonicera japonica (Japanese Honeysuckle)
Identifying Characteristics
Habit:Twining vine
Flowers:In terminal clusters, tubular, white or yellow (both colors often appearing on the same plant)
Foliage:Simple, opposite
Scent:Flowers are sweetly scented
Life Cycle: Woody perennial
Recent Logs[edit]

Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Lonicera japonica

Ambrosia trifida

Botanical drawing

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Profile for Ambrosia trifida (Giant Ragweed)
Identifying Characteristics
Flowers:Minute heads on dense spikes. Yellow, but appear green from a distance.
Foliage:Rough-textured
Life Cycle: Perennial
Recent Logs[edit]

Global data:

Regional data and additional images for Ambrosia trifida

Helianthus annuus

Head

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Profile for Helianthus annuus (Sunflower)
Identifying Characteristics
Recent Logs[edit]

Global data:

Regional data and additional images for Helianthus annuus

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Tagetes erecta

Head

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Profile for Tagetes erecta (Marigold)
Identifying Characteristics
Recent Logs[edit]

Global data:
Temperate zone season(s): Early Summer Mid Summer, Early Fall

Regional data and additional images for Tagetes erecta

Pilea pumila

early flowers

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Profile for Pilea pumila (Clearweed)
Identifying Characteristics
Recent Logs[edit]

Global data:

Regional data and additional images for Pilea pumila

Rudbeckia laciniata

Heads

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Profile for Rudbeckia laciniata (Greenheaded Coneflower)
Identifying Characteristics
Habit:Erect herbaceous plant
Flowers:heads
Foliage:deeply lobed on lover leaves, unlobed on upper leaves
Growing Conditions:most common in moist to wet soils
Life Cycle: perennial
Recent Logs[edit]


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Global data:

Regional data and additional images for Rudbeckia laciniata

Acalypha rhomboidea

Flowering plant

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Profile for Acalypha rhomboidea (Common Three-seeded mercury)
Identifying Characteristics
Flowers:Tiny yellow flowers grow in leaf axils. Four sepals, female flowers are apetalous.
Foliage:Thin, lanceolate leaves with crenate margins. Dark green above, purplish below.
Stem:erect.
Life Cycle: Annual
Recent Logs[edit]


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Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall

Regional data and additional images for Acalypha rhomboidea

Rorippa sylvestris

Plant in bloom

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Profile for Rorippa sylvestris (Field Yellowcress)
Identifying Characteristics
Habit:Spreading herb
Flowers:Corymbs of yellow flowers, 4 yellow petals
Foliage:Pinnatifid, dark green
Stem:Purplish, flexible
Scent:mild, mustard-like
Similar Plants:Can be mistaken for Barbarea vulgaris or Barbarea verna
Recent Logs[edit]

Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Rorippa sylvestris

Duchesnea indica

Duchesnea indica7.jpg

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Profile for Duchesnea indica (Mock Strawberry)
Identifying Characteristics
Habit:Creeping herbaceous plant
Flowers:5 yellow petals
Foliage:Trifoliate, roughly haired, dark green
Fruit:Strawberry-like but with red seeds
Life Cycle: Perennial
Recent Logs (flowers)[edit]


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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Duchesnea indica

Bidens frondosa

Flowering plant

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Profile for Bidens frondosa (Devil's Stickseed)
Identifying Characteristics
Flowers:small heads with yellow ray florets
Recent Logs[edit]

Global data:

Regional data and additional images for Bidens frondosa

Rudbeckia fulgida

Plant covered in flowers

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Profile for Rudbeckia fulgida (Blackeyed Susan, Orange Coneflower)
Identifying Characteristics
Habit:colonizing herbaceous plant
Flowers:Heads with cone-shaped black disks and orange rays
Foliage:simple, rough to the touch
Stem:Freely branching
Life Cycle: perennial
Similar Plants:Sometimes confused with Rudbeckia hirta
Recent Logs[edit]

Global data:

Regional data and additional images for Rudbeckia fulgida

Euthamia graminifolia

Flowering plant

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Profile for Euthamia graminifolia (Grass-leaves goldenrod)
Identifying Characteristics
Habit:erect, clump-forming forb
Flowers:flat-topped terminal clusters of small yellow heads
Recent Logs[edit]

Global data:

Regional data and additional images for Euthamia graminifolia

Rudbeckia triloba

Flowers covering plant

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Profile for Rudbeckia triloba (Browneyed Susan)
Identifying Characteristics
Habit:upright forb, freely branching
Recent Logs[edit]


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Global data:

Regional data and additional images for Rudbeckia triloba



last updated 12:41, 13 October 2007 (UTC) with 33 plants