Annual Sow-thistle
Sonchus oleraceus Aster Family
(c) Bogdan
(c) Bogdan

Growth Form: Herb

Flower Color: Yellow

Leaf Arrangement: Alternate

Leaf/Leaflet Shape: Deeply lobed, Sharp and pointed

Habitat Type: Waste places; Common

Ecological Management Units Where Present (by number): George Robert White Environmental Conservation Center (1), Central Woodland (4), Successional Field (5), South Side (6), Composting Site (9)

Total Number of EMUs: 5

Status in Massachusetts: Introduced

Notes: Leaves embrace smooth stem

Credits: Morola Adjibodou, the Boston Nature Center and the EFG Project at UMass Boston