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Mystery Plant Identification

Plant Identification Challenge Solved

Mystery Weed - Ixeris stolonifera

Ixeris stolonifera

Thank you to the many readers who responded to the June Plant Identification Challenge. Glenn White, New Jersey, was the only entry to correctly identify Ixeris stolonifera, or creeping lettuce. Ixeris stolonifera is listed in the Natural Resources Conservation Services’ (NRCS) PLANTS Database as introduced throughout Delaware and New Jersey and in parts of New York and Pennsylvania. The challenge plant was recently spotted in a New Hampshire garden and has been reported to NRCS. Congratulations to Glenn who received an ELA hat for his quick response.

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Mystery Weed - Matting Groundcover Yellow Flowers - Looks InvasiveGeneral Plant Characteristics
Weed location:  Suburban: Lawn/Turf
Growth Form:   Creeping/Vining
Height:                2-3 inches
Life Cycle:           Perennial
Tendrils:              No
Produces milky
sap:                       No

Mystery Vine - Leaf Characteristics Leaf characteristics
Leaf arranged:   Opposite
Leaf type:            Simple, not lobed
Leaf margin:       Entire (not toothed)
Petioles:               Present
Leaf hairs:          Absent
prickles:             Absent
Leaf veins:         Pinnate

Mystery Vine - Size and SeedsStem characteristics
Stem type:  Round
Leaves on flowering stems:   No
Spines/thorns/prickles:  No

Floral characteristics
Flower color:      Yellow
Flower symmetry:    Radial
Spines/thorns/prickles:   Absent

Mystery Weed - Matting Groundcover - Looks Invasive