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European Red List of Vascular Plants - European Commission

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Near Threatened. One species is Extinct at the <strong>European</strong><br />

level, the Serbian endemic Trapa annosa; however the<br />

taxonomy <strong>of</strong> the genus Trapa is far from clear and it is not<br />

certain that T. annosa is a good species. The Greek endemic<br />

Isoetes heldreichii, is listed as Critically Endangered/<br />

Possibly Extinct as it has not been seen since 1885, in spite<br />

<strong>of</strong> searches in the type locality, however there is also a need<br />

to resolve the taxonomic status <strong>of</strong> this species, particularly<br />

in relation to populations recently found on the island <strong>of</strong><br />

Lesvos (I. Bazos pers. comm. 2010).<br />

A temporary pool on karstic limestone which supports half <strong>of</strong> the <strong>European</strong> population<br />

<strong>of</strong> Callitriche pulchra, Gavdos Island, Greece Photograph © Richard V. Lansdown.<br />

Finally, it should be noted that the percentages <strong>of</strong> threatened<br />

aquatic plants mentioned above represent minimum<br />

estimates. A more realistic value may be calculated based<br />

only on the surviving species which have been assessed for<br />

their extinction risk (i.e. omitting DD and EX from the<br />

total). In this case, 7.9% <strong>of</strong> aquatic plants are threatened at<br />

<strong>European</strong> level and 8.1% at EU 27 level. The Extinct and<br />

threatened species (Critically Endangered, Endangered,<br />

and Vulnerable) at <strong>European</strong> and EU 27 level are listed<br />

in Table 10.<br />

Table 10. Threatened and Extinct aquatic plants at the <strong>European</strong> and EU 27 level<br />

Family Species <strong>Red</strong> <strong>List</strong> Status<br />

Europe<br />

<strong>Red</strong> <strong>List</strong> Status<br />

EU 27<br />

Endemic to Europe<br />

TRAPACEAE Trapa annosa EX NE Yes<br />

CALLITRICHACEAE Callitriche pulchra CR CR<br />

CRUCIFERAE Rorippa valdes-bermejoi CR CR Yes<br />

ISOETACEAE Isoetes heldreichii CR CR Yes<br />

ISOETACEAE Isoetes malinverniana CR CR Yes<br />

UMBELLIFERAE Apium bermejoi CR CR Yes<br />

CALLITRICHACEAE Callitriche regis-jubae EN EN<br />

CALLITRICHACEAE Callitriche transvolgensis EN NE Yes<br />

ISOETACEAE Isoetes boryana EN EN Yes<br />

ISOETACEAE Isoetes fluitans EN EN Yes<br />

LYTHRACEAE Lythrum thesioides EN EN<br />

MARSILEACEAE Marsilea batardae EN EN Yes<br />

MARSILEACEAE Pilularia minuta EN EN<br />

UMBELLIFERAE Eryngium viviparum EN EN Yes<br />

ALISMATACEAE Alisma wahlenbergii VU EN Yes<br />

ALISMATACEAE Damasonium polyspermum VU VU<br />

ALLIACEAE Allium schmitzii VU VU Yes<br />

CONVOLVULACEAE Ipomoea sagittata VU VU<br />

CYPERACEAE Cyperus cyprius VU VU Yes<br />

ELATINACEAE Elatine brochonii VU VU<br />

HYDROCHARITACEAE Najas flexilis VU VU<br />

ISOETACEAE Isoetes azorica VU VU Yes<br />

LENTIBULARIACEAE Pinguicula mundi VU VU Yes<br />

MARSILEACEAE Marsilea azorica VU VU Yes<br />

MARSILEACEAE Marsilea strigosa VU VU<br />

PRIMULACEAE Anagallis crassifolia VU VU<br />

UMBELLIFERAE Thorella verticillato-inundata VU VU Yes<br />

HIPPURIDACEAE Hippuris tetraphylla LC VU<br />

HYDROCHARITACEAE Najas tenuissima DD EN<br />

36

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