Cryptocoryne alba
de Wit
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
CR · En danger critiquecritères B1ab(iii,v)+2ab(iii,v)↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- 20 – 30 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The subpopulations are described as tiny. The population trend is inferred to be declining and there is inferred to be a continuing decline in the number of mature individuals as a result of habitat loss and degradation.
Menaces identifiées(4 menaces classées CMP-IUCN)
2_3_2Small-holder grazing, ranching or farmingRapid DeclinesMajority (50-90%)Ongoing5_2_1Intentional use (species is the target)UnknownUnknownOngoing7_2_4Abstraction of surface water (unknown use)UnknownUnknownOngoing7_2_8Abstraction of ground water (unknown use)UnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The habitat in areas from which this species has been found has been converted to cultivation or plantations. Remaining potentially suitable habitat in the area has some degree of protection as a Forest Reserve but the springs are described as drying out, possibly due to over-exploitation or climate change. It is also threatened by collection from the wild for the plant trade.
Habitats préférentiels (classification IUCN)
5_2Wetlands (inland) - Seasonal/Intermittent/Irregular Rivers/Streams/Creeks★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is classed as Critically Endangered CR B1ab(i, ii, iii)+2ab(i, ii, iii) in the Red Data Book of Sri Lanka (Yakandawala 2012). There has never been a thorough survey of the area for this species and there is an urgent need for survey of potentially suitable habitat along the Kalu Ganga, particularly in remnant lowland forest areas such as the Bodhingala Forest Reserve.
Stress écologiques (7)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational16Establishing ex-situ production *international
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Indomalayan
Systèmes (terrestre/eau douce/marin)
Freshwater (=Inland waters)
Formes de croissance
Forb or HerbHydrophyte
Références bibliographiques (5)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
- Bastmeijer, J.D. 2021. Crypts pages: <i>Cryptocoryne alba</i>. Available at: <a href="https://crypts.home.xs4all.nl/Cryptocoryne/Gallery/alb/alb.html">https://crypts.home.xs4all.nl/Cryptocoryne/Gallery/alb/alb.html</a>.
- Bastmeijer, J.D., Babics, P. and Kettner, C. 2012. Eine neue <i>Cryptocoryne</i>-Art (Araceae) aus Sri Lanka (Ceylon). <i>Aqua Plants</i> 37(2): 50-59.
- Yakandawala, D. 2012. Present Status of Fresh Water Aquatic Flora in Sri Lanka. In: D.K. Weerakoon and S. Wijesundara (eds), <i>The National Red List 2012 of Sri Lanka; Conservation Status of the Fauna and Flora</i>, pp. 186-196. Ministry of Environment, Colombo.
- Graaf, A. de and Arends, J.C. 1986. The occurrence of <i>Cryptocoryne</i> and <i>Lagenandra</i> (Araceae) on Sri Lanka. <i>Nordic Journal of Botany</i> 6: 757-764.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Lansdown, R.V.
contributor
Kasselmann, C.
evaluator
Jacobsen, N. & Yakandawala, D.M.D.
Lansdown, R.V. 2023. Cryptocoryne alba. The IUCN Red List of Threatened Species 2023: e.T175651116A175651127. Accessed on 05 May 2026.