Conium maculatum: Country Or Region Of Origin
Europe, Mediterranean
Plant Profile: Conium maculatum
Taxonomy: Conium maculatumNames
California Fern, Deadly Hemlock, Nebraska Fern, Poison Fool's Parsley, Poison Hemlock, Poison Parsley, Spotted Hemlock, Winter Fern
Phonetic Spelling:KOH-nee-um mak-yoo-LAY-tum
Genus:Conium
Species:maculatum
Family:Apiaceae
This upright biennial plant features a thick taproot and striking white blossoms. The foliage of Conium maculatum bears a resemblance to that of parsley (Petroselinum crispum), but it is important to note that Conium maculatum is highly toxic.
Conium maculatum Feature Summary
Conium maculatum Image Gallery
Tags
#white
#showy flowers
#poisonous
#white flowers
#pink flowers
#fine leaves
#lacy leaves
#countryside
#victorian garden
#villages
#problem for cats
#problem for dogs
#problem for horses
#woodlands
Similar Plants
Conium maculatum is often confused with:
Conium maculatum Feature Summary
Attributes
Fruit
Ovoid to suborbicular compressed laterally and ribbing on the surface.
Flowers
Small, white, in terminal umbrella-like clusters
Pink
White
Leaves
Large, 3-4 pinnately divided, the leaflets broadly ovate to deltate very
Green
Compound (Pinnately , Bipinnately, Palmately)
Ovate
Deltoid
Stem
Smooth, purple, brown, or red spots and fine regular lines, hollow stem; taproot solid and parsnip-like
Brown/Copper
Purple/Lavender
Green
Red/Burgundy
Smooth (glabrous)
Smooth/Hairless
Poisonous to Humans
HIGHLY TOXIC, MAY BE FATAL IF EATEN! Delivery by ingestion. Salivation, vomiting, diarrhea, muscular weakness, paralysis, nervousness, trembling, dilation of pupils, weak pulse, convulsions, coma.
Alkaloids coniine and others
High
Seeds
Leaves
Stems
Sap/Juice
Flowers
Bark
Fruits
Roots
Whole Plant Traits
Herbaceous Perennial
Poisonous
Erect
Landscape
Water Garden
Woodland
Naturalized Area
Slope/Bank
Pond
Poisonous to Humans
Problem for Cats
Problem for Dogs
Problem for Horses
Weedy
Conium maculatum Image Gallery
Conium maculatum Attributes
Conium maculatum: Distribution
Naturalized in US
Conium maculatum: Life Cycle
Annual
Biennial
Bulb
Perennial
Woody
Conium maculatum Fruit
Conium maculatum: Fruit Description
Ovoid to suborbicular compressed laterally and ribbing on the surface.
Conium maculatum Flowers
Conium maculatum: Flower Description
Small, white, in terminal umbrella-like clusters
Conium maculatum: Flower Color
Pink
White
Conium maculatum: Flower Inflorescence
Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel
Conium maculatum: Flower Value To Gardener
Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy
Conium maculatum Leaves
Conium maculatum: Leaf Description
Large, 3-4 pinnately divided, the leaflets broadly ovate to deltate very
Conium maculatum: Leaf Color
Green
Conium maculatum: Leaf Type
Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple
Conium maculatum: Leaf Shape
Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate
Conium maculatum: Hairs Present
No
Yes
Conium maculatum Stem
Conium maculatum: Stem Description
Smooth, purple, brown, or red spots and fine regular lines, hollow stem; taproot solid and parsnip-like
Conium maculatum: Stem Color
Brown/Copper
Green
Purple/Lavender
Red/Burgundy
Conium maculatum: Stem Is Aromatic
No
Yes
Conium maculatum: Stem Surface
Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)
Conium maculatum: Stem Buds
Hairy
Hairy tips
Scaly
Smooth/Hairless
Conium maculatum Poisonous to Humans
Conium maculatum: Poison Symptoms
HIGHLY TOXIC, MAY BE FATAL IF EATEN! Delivery by ingestion. Salivation, vomiting, diarrhea, muscular weakness, paralysis, nervousness, trembling, dilation of pupils, weak pulse, convulsions, coma.
Conium maculatum: Poison Toxic Principle
Alkaloids coniine and others
Conium maculatum: Poison Severity
High
Low
Medium
Conium maculatum: Causes Contact Dermatitis
No
Yes
Conium maculatum: Poison Part
Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems
Conium maculatum Whole Plant Traits
Conium maculatum: Plant Type
Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower
Conium maculatum: Habit/Form
Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping
Conium maculatum Landscape
Conium maculatum: Landscape Theme
Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden
Conium maculatum: Landscape Location
Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland
Conium maculatum: Problems
Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy
