*Scleranthus annuus Linnaeus ssp. annuus . Knawel, Annual Knawel, Knotgrass. Phen: Mar-Oct. Hab: Fields, ditches, roadsides, other disturbed areas. Dist: Native of Mediterranean Europe, n. Africa, and w. Asia.
Origin/Endemic status: Europe
Taxonomy Comments: There are seven other subspecies (Thieret & Rabeler in FNA 2005).
Synonymy: = Ar, FNA5, NY; < Scleranthus annuus L. – C, F, Fl4, G, GrPl, Il, K1, K3, K4, Mi, NE, Pa, RAB, Tn, Va, W, WH3, WV
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© Erik Danielson 
© Keith Bradley | Original Image ⭷
© Erik Danielson 
© Erik Danielson