Details of...
Scientific Name: Lactuca muralis
Pronunciation: sy-SER-bit-uh mure-AY-liss
Common Name: wall lettuce
Family Name: Asteraceae
Plant Type: Weed (horticultural), Annual
Key ID Features: Leaves toothed, lobed almost to midrib with largest lobes towards the apex, up to 25 cm long; flower heads < 1 cm wide comprised of 5 golden-yellow ray florets; achenes with silver-gray hairs.
Course(s): not used (on campus)

Habit: Upright
Form: Oval - vertical
Texture: Coarse
Mature Size:
Height:0.7 - 1.3m
Spread:0.3 - 0.6m
Growth Rate:Fast
Origin: Europe
Hardiness Rating: Zone 8b: (-9.4 to -7 C)
Exposure: Filtered shade, Full sun, Full sun only if soil kept moist, Part sun/part shade
Soil/ Growing Medium: Rocky or gravelly or dry
Landscape Uses:
Additional Info: Google
wall lettuce
Leaf Morphology: Glossary
Form: Simple
Arrangement: Alternate
Texture/ Venation: Pinnate venation, Soft flexible
Surfaces: Glabrous
Colour in Fall: Yellow
Leaf(let) Terms:
Shapes: Obovate
Apices: Acute
Bases: Truncate
Margins: Dentate, Incised, Pinnately lobed

Inflorescence Type: Panicle-like, Head (capitulum)
Flower Morphology:Flowers perfect
Corolla Shape:Ligulate
Ovary Position:Inferior
Colour (petals): Yellow
Flower Time at Peak: May, Jun, Jul, Aug, Sep, Oct

Fruit Type: Cypsela (achene + calyx)
Fruit Colour: Brown, White
Fruiting Time: Jul, Sep, Oct

Bark Morphology: Smooth
Bark or Stem Colour: Green

Plant Care:
Other:Be sure to remove plants before flowers fade.
Pest Susceptibility: Pest resistant, Disease resistant
(WDY) WeeDY location
Location Map

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