Floating Pennywort - Hydrocotyle ranunculoides
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Species Description
Widespread and locally frequent North to Middlesbrough; very scattered elsewhere. It is rapidly spreading. Habitat includes: rivers, streams, canals, ponds, lakes, rhynes etc.
Stace 4:
Hydrocotyle ranunculoides L. f. - Floating Pennywort.
Similar to H. vulgaris in habit but larger, glabrous; stems often floating; leaves not peltate, ≤70mm across; fruit suborbicular, 2-3mm; (2n=24). Neophyte-naturalised; in rivers, canals and ponds, first recorded 1990 and rapidly spreading; Britain North to County Durham, especially South East England, Moray; North America.
Key:
- Plant usually in water or bogs or on mud, glabrous at least on leaf uppersides and on stems; fruits orbicular or slightly wider than long
- Leaves not peltate, with deep basal sinus, lobed more or less 1/2 way to base