Scientific Name:
Erythronium americanum
Pronunciation:
air-ih-THROE-nee-um uh-mair-ih-KAY-num
Common Name:
yellow trout lily, adder's tongue
Family Name:
Liliaceae
Plant Type:
Herbaceous perennial
Key ID Features:
Leaves tulip-like, basal leaves, usually <15cm long, often mottled with gray or brown to purple, margins entire; flowers lily-like with 6 tepals, recurved upward, and close at night; capsules 12-15mm long.
Habit:
Upright
Form:
Oval - vertical
Texture:
Medium - fine
Mature Height:
0.1 - 0.2m
Mature Spread:
0.1 - 0.3m
Growth Rate:
Moderate
Origin:
U.S. - northeast
Hardiness Rating:
Zone 3: (-40 to -34 °C)
Exposure:
Part sun/part shade, Filtered shade
Soil/Growing Medium:
Acidic, Humus rich, Well-drained
Water Use:
Moderate, Summer dry
Landscape Uses:
Mixed shrub border, Perennial border, Woodland margin
Additional Info:
Google. Plants go dormant by late spring and the leaves die back.
Leaf Morphology:
Form:
Simple
Arrangement:
Basal
Texture/Venation:
Soft flexible
Surfaces:
Glabrous
Colour in Summer:
Green, Brown, Brownish-mottled
Shapes:
Oblong, Spatulate
Apices:
Acute
Margins:
Entire
Inflorescence Type:
Flowers solitary
Flower Morphology:
Flowers perfect
Number Of Petals:
6
Corolla Shape:
Funnelform
Ovary Position:
Superior
Colour (petals):
Showy, Yellow
Flower Time at Peak:
Apr
Additional Info:
May take several years to flower
Fruit Type:
Capsule
Fruit Colour:
Green, Brown
Fruiting Time:
May, Jun
Additional Info:
Fruit insignificant
Bark or Stem Colour:
Organ Modifications:
Corms, Runners (or stolons)
Propagation:
Seed, Division - below ground parts
Pest Susceptibility:
(Pest resistant, Disease resistant)
