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Diodia virginiana Linnaeus. Large Buttonweed. Phen: Jun-Dec. Hab: Ditches, wet fields, wet swales along highways, other moist to wet habitats. Dist: CT, PA, IL, and KS south to FL and TX; West Indies; Mexico (YUC) and Central America.

ID notes: The leaves frequently turn bright yellow, caused by a viral infection.

Origin/Endemic status: Native

Synonymy ⓘ: = GrPl, K4, Sorrie (2016a); = n/a – Pa; > Diodia hirsuta Pursh – S; > Diodia tetragona Walter – S; < Diodia virginiana L. – Ar, C, F, Fl5, G, GW2, Il, K3, Meso4.2, Mex, NcTx, RAB, Tn, Va, W, WH3, WI, WV; > Diodia virginiana L. – S; > Diodia virginiana L. var. attenuata Fernald – F, K1; > Diodia virginiana L. var. latifolia Torr. & A.Gray – K1; > Diodia virginiana L. var. virginiana – F, K1, NE

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Wetland Indicator Status:

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

Heliophily ⓘ: 8

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Prostrate annual/perennial of ditches, wet fields and other moist to wet habitats.

Stems: Stems 4-sided, sprawling, branching from root crown, hairy at least on angles.

Leaves: Leaves opposite, sessile with linear stipules at the base, lance-shaped to narrowly oval, to 2 1/2 in. long, entire.

Inforescence:

Flowers: Flowers solitary in leaf axils, white (occasionally pink), about 1/4 in. long, funnel-shaped, with 4 spreading, pointed corolla lobes that are densely hairy inside.

Fruits: Fruit a green, 8-ribbed, ellipsoid drupe with persistent calyx lobes.

Comments:

Height: 4-18 in.

plant sale text:

bloom table text:

description: Prostrate annual/perennial of ditches, wet fields and other moist to wet habitats.

stems: Stems 4-sided, sprawling, branching from root crown, hairy at least on angles.

leaves: Leaves opposite, sessile with linear stipules at the base, lance-shaped to narrowly oval, to 2 1/2 in. long, entire.

inflorescence:

flowers: Flowers solitary in leaf axils, white (occasionally pink), about 1/4 in. long, funnel-shaped, with 4 spreading, pointed corolla lobes that are densely hairy inside.

fruits: Fruit a green, 8-ribbed, ellipsoid drupe with persistent calyx lobes.

comments:

cultural notes:

germination code:

native range: eastern United States