NameThatPlant.net: Sonchus arvensis var. glabrescens

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3847

Forb
Perennial

Non-native: Europe

Documented growing wild in - NC -

Look for it in disturbed areas, per Weakley's Flora

map
To see a detailed map, click here

Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

Tennessee Exotic Pest Plant Council, 2009

DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)

LEAVES:
Simple
Alternate

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Absent
Ray flowers bisexual
Inferior ovary

FRUIT:
Summer/Fall
Dark brown
Achene

TO LEARN MORE about this plant, look it up in a good book!

Wildflowers of the Eastern United States p134?

Dig deeper at SERNEC, a consortium of southeastern herbaria.

Check out EDDMapS.org to see where this has been reported.

Generally speaking, sowthistles resemble yellow-flowered wild lettuces (genus Lactuca), but the heads are much broader. Read more at Vascular Plants of North Carolina.

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA (11/30/12):
Sonchus arvensis var. glabrescens FAMILY Asteraceae_

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Sonchus arvensis ssp. uliginosus FAMILY Asteraceae_

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-08-001:
Sonchus arvensis FAMILY Asteraceae_

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Sonchus uliginosus

COMMON NAME:
Field Sowthistle, Perennial Sowthistle

Click or hover over the thumbnails to see larger pictures.

image of Sonchus arvensis var. glabrescens, Field Sowthistle, Perennial Sowthistle

Bruce A. Sorrie bas_sonchus_arvensis2

August Rensselaer County NY

Heads 30-50mm across in flower. Phyllaries and peduncles glabrous, per Weakley's Flora (2015).

Bruce A. Sorrie bas_sonchus_arvensis3

August Rensselaer County NY