Veronica catenata

Tracheophyta MagnoliopsidaScrophulariaceaeVeronicaVeronica catenata

Ecology

This usually annual species is found in shallow water and on the muddy edges of rivers, streams, ponds and lakes, in dune-slacks, and in clay-, gravel- and chalk-pits. Although often found with V. anagallis-aquatica, its habitats are more restricted, being more frequent on the muddy edges of standing waters. Lowland.

Status

Native

World Distribution

Circumpolar Temperate element, with a disjunct distribution.

© P. Shannon

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 10

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 8

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.8

July Mean Temperature (Celsius): 15.6

Annual Precipitation (mm): 816

Height (cm): 50

Perennation - primary

Annual

Perennation - secondary

Perennial

Life Form - primary

Annual hydrophyte (aquatic therophyte)

Life Form - secondary

Perennial hydrophyte (perennial water plant)

Comment on Life Form

"Habitat often mud in summer, where tiny plants may possibly be annual (P & C 1994)"

Woodiness

Herbaceous

Clonality - primary

Shortly creeping and rooting at nodes

Count of 10km squares in Great Britain: 956

Count of 10km squares in Ireland: 249

Count of 10km squares in the Channel Isles: 4

Atlas Change Index: 0.37

Weighted Changed Factor: -12

Weighted Change Factor Confidence (90%)

28

JNCC Designations

NBNSYS0000004099

Atlas text references

Atlas (228c)
Burnett J
1997.  Notes on Veronica anagallis-aquatica agg. BSBI News. 75:15-17.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Meusel H, Jäger E, Rauschert S, Weinert E
1978.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 2. 2 vols.
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.