*Arenaria leptoclados (Reichenbach) Gussone. Small Thyme-leaved Sandwort, Slender Sandwort. Phen: Mar-Jun. Hab: Disturbed areas. Dist: Native of Eurasia. The relative ranges, habitats, and abundance of the A. leptoclados and A. serpyllifolia are poorly known; additional herbarium work is needed.

Origin/Endemic status: Eurasia

Taxonomy Comments: This and A. serpyllifolia s.s. have been treated variously by workers in their native range and where introduced (as here). A. leptoclados is diploid (2n=20), whereas A. serpyllifolia is tetraploid (2n=40).

Synonymy: = K4, Va, Abuhadra (2000); = Arenaria serpyllifolia L. ssp. leptoclados (Rchb.) Nyman – Fl4, NE, Pa, WH3; = Arenaria serpyllifolia L. var. tenuior Mert. & W.D.J.Koch – Ar, C, F, FNA5, G, K3, Tn, Maguire (1951); < Arenaria serpyllifolia L. – GrPl, K1, RAB, S, S13, W

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: UPL (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FAC (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: FAC (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FAC (taxonomic split from wetland indicator species)

Heliophily: 8