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Callitriche heterophylla Pursh var. heterophylla . Common Water-starwort. Phen: Mar-Nov. Hab: Pools, slow-moving streams, ditches. Dist: Greenland west to AK, south to c. peninsular FL, TX, CA, and Mexico.

Origin/Endemic status: Native

Taxonomy Comments: The other variety, var. bolanderi (Hegelmann) Fassett, with larger fruits, co-occurs with var. heterophylla in nw. North America and is of uncertain taxonomic status, having been treated as species, subspecies, variety, and lumped.

Synonymy ⓘ: = NE, Va, Lansdown (2009); = Callitriche heterophylla Pursh – Tat; = Callitriche heterophylla Pursh ssp. heterophylla – K1, K3, K4, NY; > Callitriche anceps Fernald – F, Fassett (1951); > Callitriche deflexa A.Braun var. austini (Engelm.) Hegelm. – F; < Callitriche heterophylla Pursh – Ar, C, Fl6, FNA17, G, GrPl, GW2, Il, Mi, NcTx, Pa, RAB, S, S13, Tn, Tx, W, WH3, Crow & Hellquist (2000a); > Callitriche heterophylla Pursh – F; > Callitriche heterophylla Pursh var. heterophylla – Fassett (1951)

Links to other floras: < Callitriche heterophylla - FNA17

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL (name change)
  • Eastern Mountains and Piedmont: OBL (name change)
  • Great Plains: OBL (name change)
  • Midwest: OBL (name change)
  • Northcentral & Northeast: OBL (name change)

Heliophily ⓘ: 7

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image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© jtuttle, all rights reserved, uploaded by jtuttle source | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© jtuttle, all rights reserved, uploaded by jtuttle source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© John Gwaltney | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Aquatic perennial (sometimes not submerged) of pools, impoundments, upland depression ponds, slow-moving streams and ditches.

Stems: Stems slender and compressed, elongating in deep water.

Leaves: Leaves vary: submerged ones linear, to about 1 in. long, with 1 major vein; floating and upper leaves crowded into tufts, spoon-shaped, with 3-5 major veins.

Inforescence:

Flowers: Flowers 1-3 in leaf axils, subtnded by 2 small bracts, lacking petals or sepals, and with either a single stamen or single, 4-celled ovary.

Fruits:

Comments:

Height:

plant sale text:

bloom table text:

description: Aquatic perennial (sometimes not submerged) of pools, impoundments, upland depression ponds, slow-moving streams and ditches.

stems: Stems slender and compressed, elongating in deep water.

leaves: Leaves vary: submerged ones linear, to about 1 in. long, with 1 major vein; floating and upper leaves crowded into tufts, spoon-shaped, with 3-5 major veins.

inflorescence:

flowers: Flowers 1-3 in leaf axils, subtnded by 2 small bracts, lacking petals or sepals, and with either a single stamen or single, 4-celled ovary.

fruits:

comments:

cultural notes:

germination code:

native range: