Bloom Clock/Keys/Southeastern Pennsylvania/May/Yellow Flowers/Herbaceous

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This page is part of a dichotomous key for plants recorded as blooming in Southeastern Pennsylvania during the month of May.
These plants have the following traits:

  • Yellow flowers
  • are herbaceous

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 | edit source]

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


Euphorbia lathyris

Flowering plant

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Profile for Euphorbia lathyris (Caper Spurge)
Identifying Characteristics
Recent Logs[edit | edit source]

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


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 | edit source]

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


Allium

Temple flowers wide.jpg

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Profile for Allium (Onion, Garlic, Leek, etc.)
Identifying Characteristics
Subclass plants:BCP/Allium aflatunense, BCP/Allium canadense, BCP/Allium cernuum, BCP/Allium flavum, BCP/Allium sativum, BCP/Allium schoenoprasum, BCP/Allium ursinum, BCP/Allium vineale
Recent Logs[edit | edit source]


(view all logs)

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


Fragaria vesca

flowering plant

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Profile for Fragaria vesca (Woodland Strawberry)
Identifying Characteristics
Recent Logs[edit | edit source]

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


Narcissus

A Jonquil flower

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Profile for Narcissus (Daffodil, Jonquil, Narcissus)
Identifying Characteristics
Habit:Upright herbaceous plants
Foliage:Basal, straplike, slightly bluish
Subclass plants:Narcissus pseudonarcissus
Recent Logs[edit | edit source]
  • Anna reg 12:05, 12 April 2010 (UTC)
  • Sb f 14:46, 6 March 2011 (UTC) (plants blooming in the microclimate by the springhouse, elsewhere not flowering)
  • Anna reg 18:35, 24 March 2011 (UTC)
    (view all logs)

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


Waldsteinia fragarioides

flowering plant (purple flowers are Vinca minor)

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Profile for Waldsteinia fragarioides (Barren Strawberry)
Identifying Characteristics
Habit:Creeping herbaceous plant
Recent Logs[edit | edit source]


(view all logs)

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


Tulipa

flowering plants

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Profile for Tulipa (Tulip)
Identifying Characteristics


Recent Logs[edit | edit source]

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


Stylophorum diphyllum

Flowers

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Profile for Stylophorum diphyllum (Celandine poppy)
Identifying Characteristics
Flowers:4 showy petals, numerous anthers, all yellow
Foliage:hairy beneath and on the petioles
Fruit:pods
Life Cycle: perennial
Recent Logs[edit | edit source]


(view all logs)

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


Alchemilla mollis

Inflorescences and foliage

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Profile for Alchemilla mollis (Lady's Mantle)
Identifying Characteristics
Recent Logs[edit | edit source]

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


Iris

Flower of Iris versicolor

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Profile for Iris (Iris)
Identifying Characteristics
Recent Logs[edit | edit source]

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


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 | edit source]

Global data:


Coreopsis lanceolata

Head

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Profile for Coreopsis lanceolata (Lanceleaf Tickseed)
Identifying Characteristics
Recent Logs[edit | edit source]

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


Barbarea vulgaris

Closeup of flowers

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Profile for Barbarea vulgaris (Yellow Rocketcress)
Identifying Characteristics
Habit:Upright
Flowers:Corymbs of yellow flowers, 4 petals.
Foliage:Glossy dark green, pinnately lobed or divided with a large terminal leaflet or lobe
Stem:green, stiff
Life Cycle: Biennial
Similar Plants:Barbarea verna, Rorippa sylvestris
Recent Logs[edit | edit source]

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


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 | edit source]

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


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 | edit source]


(view all logs)

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


Senecio vulgaris

Stems and flowers

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Profile for Senecio vulgaris (Common Groundsel)
Identifying Characteristics
Habit:Low growing but upright herbaceous plant
Flowers:Enclosed heads
Recent Logs[edit | edit source]

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


Linaria vulgaris

Inflorescences

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Profile for Linaria vulgaris (Butter and Eggs)
Identifying Characteristics
Habit:spreading herbaceous plant
Flowers:Snapdragon-like, yellow
Foliage:Simple, covered in a white, waxy bloom
Stem:Weak
Scent:None
Fruit:Dry capsules
Life Cycle: Perennial
Recent Logs[edit | edit source]

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


Matricaria discoidea

Heads

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Profile for Matricaria discoidea (Pineappleweed)
Identifying Characteristics
Habit:Herbaceous forb
Flowers:Discoid heads
Foliage:The leaves are pinnately dissected and sweet-scented when crushed.
Stem:The plant grows 3 to 12 inches (7.5 - 30 cm) high.
Scent:The flowers exude a chamomile/pineapple aroma when crushed.
Growing Conditions:Disturbed areas, especially those with poor, compacted soil. It can be seen blooming on footpaths, roadsides, and similar places in spring and early summer.
Life Cycle: Annual
Recent Logs[edit | edit source]

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


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 | edit source]

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


Packera obovata

Flowers

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Profile for Packera obovata (Golden Ragwort)
Identifying Characteristics
Recent Logs[edit | edit source]

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


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 | edit source]

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


Ranunculus

Flower of r. repens

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Profile for Ranunculus (Buttercup)
Identifying Characteristics
Subclass plants:R. ficaria
Recent Logs[edit | edit source]

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



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Last updated 12:53, 1 January 2008 (UTC) from the DPL page with 23 plants.