|Scientific Name:||Polygala helenae Greuter|
|Red List Category & Criteria:||Critically Endangered B1ab(iii)+2ab(iii) ver 3.1|
|Reviewer(s):||Strahm, W. & de Montmollin, B. (Mediterranean Island Plants Red List Authority)|
This species is only presently known from a single subpopulation that occurs in a very small area. There are clear threats to the habitat and hence continuing decline is inferred.
|Previously published Red List assessments:|
|Range Description:||This species is endemic to Kithira, a small Greek island of 284 km² which lies opposite the eastern tip of the Peloponnese, Cape Malea, in the Ionian Sea. The taxon is known from a population near Kalamos, but it may also occur in other sites on the island. It is difficult to find not only because it is rare, but also because it is rather inconspicuous.|
Native:Greece (East Aegean Is.)
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Known with certainty only from a single subpopulation.|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||This perennial herb grows on sandy soil and rarely occurs in open areas. Usually its slender branches can be seen protruding from spiny cushions composed of other plant species growing in the same vegetation type. |
P. helenae has a narrow ecological range. It usually grows in association with Spiny Broom (Genista acanthoclada) and Thorny Burnet (Sarcopoterium spinosum) which typically characterize "phrygana" vegetation. This vegetation type is composed largely of spiny or aromatic dwarf shrubs, growing in lowland areas on dry soils. In Greece there are several types of phrygana, depending upon grazing pressure, the incidence of fires, exposure, soils and geology. A purple tulip, the Greek endemic Tulipa goulimyi, may also be found growing in the same areas as P. helenae. Related species are Polygala venulosa and P. supina, which are Balkan endemics.
|Major Threat(s):||The natural habitat of P. helenae was once cultivated. While the area is no longer used for agriculture, there is an increasing risk that it may be needed for agricultural purposes again. Should this happen then the species would probably disappear. Increased tourism also poses a threat to this plant.|
Actions in Place
Legally: This species is not included in any international conventions or national legislation.
In situ: No measures taken as of yet.
Ex situ: Cultivation from seeds and attempts to transplant this species from the wild into the Botanic Garden of the University of Patras have both failed.
Given that to date ex situ conservation efforts have been unsuccessful, it would seem that the best option to conserve this species is to protect and manage the area where it is known to occur. More fieldwork on Kithira is also needed to see if this species might occur in other areas.
|Errata reason:||Errata assessment produced to correct misspelling of the Assessor name.|
|Citation:||Iatroú, G. 2006. Polygala helenae. (errata version published in 2016) The IUCN Red List of Threatened Species 2006: e.T61668A103010347.Downloaded on 22 October 2017.|
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