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

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


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


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
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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


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


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


Ranunculus

Flower of r. repens

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Profile for Ranunculus (Buttercup)
Identifying Characteristics
Subclass plants:R. ficaria
Recent Logs
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Global data:
Temperate zone season(s): Early Spring, Mid Spring


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
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Global data:


Duchesnea indica


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


Coreopsis lanceolata

Head

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Profile for Coreopsis lanceolata (Lanceleaf Tickseed)
Identifying Characteristics
Recent Logs
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer


Lonicera maackii

flowers

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Profile for Lonicera maackii (Amur Honeysuckle)
Identifying Characteristics
Recent Logs
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Global data:


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


Berberis x gladwinensis

Flowering branches

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Profile for Berberis x gladwinensis (William Penn Barberry)
Identifying Characteristics
Habit:Slow growing, heavily spined shrub
Flowers:Yellow, in axillary clusters
Foliage:Evergreen (but reddish in winter), spined
Recent Logs
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Global data:
Temperate zone season(s): Late Spring


Packera obovata

Flowers

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Profile for Packera obovata (Golden Ragwort)
Identifying Characteristics
Recent Logs
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer


Elaeagnus angustifolia

Flowers and foliage

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Profile for Elaeagnus angustifolia (Russian Olive)
Identifying Characteristics
Recent Logs
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Global data:
Temperate zone season(s): Late Spring


Rhododendron

Flowers

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Profile for Rhododendron (Rhododendrons and Azaleas)
Identifying Characteristics
Subclass plants:R. calendulaceum,

R. catawbiense,
R. maximum,
R. molle,
R. prinophyllum,
R. subsp. vireya,
R. 'Delaware Valley White',
R. 'Girard's Crimson',
R. 'Hershey's Red',
R. 'PJM',
R. 'Pleasant White',

R. 'Roseum Elegans',
Recent Logs
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Global data:
Temperate zone season(s): Early Spring, Mid Spring, Late Spring, Early Summer, Mid 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


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


Sassafras albidum

Illustration

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Profile for Sassafras albidum (Sassafras)
Identifying Characteristics
Habit:Medium sized tree or large shrub
Foliage:Unlobed, lobed on one side (resembling a mitten), or on two sides (resembling a mitten with 2 thumbs)
Recent Logs
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Global data:
Temperate zone season(s): Mid Spring, Late Spring


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


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


Berberis thunbergii

Branch with flowers and leaves

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Profile for Berberis thunbergii (Japanese Barberry)
Identifying Characteristics
Recent Logs
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(view all logs)

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


Cotinus coggygria

Flowers of a green-leaved variety

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Profile for Cotinus coggygria (Smokebush)
Identifying Characteristics
Habit:Large shrub or small tree
Recent Logs
[edit | edit source]

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



last updated 10:16, 19 October 2007 (UTC) with 22 plants