Intermediate Water-starwort - Callitriche hamulata
The species has long, parallel-sided submerged leaves. It has tiny inconspicuous green flowers and fruits.
Other Callitriche
The County Recorder has asked for a specimen of this plant to be retained for verification as it cannot be reliably identified from photographs. A sample is best taken around July time. If a specimen is not available the record should be submitted as Callitriche.
Aquatic and terrestrial usually in or near ponds, ditches, still or slow moving water.
Flowers April to September.
Perennial.
Widespread and fairly frequent in Britain, particularly in south eastern England.
The species formerly known as Callitriche hamulata is now a subspecies of Callitriche brutia. True status is hard to establish because of taxonomy changes. In the Flora of Leicestershire (Primavesi and Evans 1988) Callitriche intermedia subsp hamulata was found in 13 of the 617 tetrads, and C hamulata was in 9 tetrads in the Flora of Rutland (Messenger 1971).
Both subspecies are recorded, but division into the two subspecies is uncertain.
Callitriche brutia is listed on the current VC55 Rare Plant Register (Hall and Woodward 2022) as Locally Scarce (i.e. present in 4-10 sites) - this includes both subspecies
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