Ontologia

Yucca cernua

E.L.Keith

ENLR Monde (IUCN)
  1. Plante
  2. Tracheophyta
  3. Liliopsida
  4. Asparagales
  5. Asparagaceae
Pays · région · aire protégée · écorégion · biome

Pas d'interactions documentées pour cette espèce.

Liste rouge IUCN

EN · En dangercritères B1ab(iii,v)↘Décroissante
Évaluation complète
Évaluation
2020 · v3.1
Altitude
60 – 90 m
Profondeur
– m
État de la populationExpert
One large subpopulation of about 1,000 individuals of Yucca cernua and six small subpopulations of fewer than 100 individuals are currently known to exist (Keith 2003). New subpopulations of this species have been reported recently to the west of the known range, in observations verified by Eric Keith (iNaturalist 2019).

Menaces identifiées(2 menaces classées CMP-IUCN)

  • 2_2_2
    Agro-industry plantations
    Ongoing
  • 2_3_2
    Small-holder grazing, ranching or farming
    Ongoing
Description complète des menacesExpert

This is an extremely rare species that is only known with certainty from one small area. All known subpopulations occur on private land and public highway rights-of-way and are not currently protected (Keith 2003). Some areas near subpopulations have been cleared and converted to farmland and rangeland. The range of the species is subject to pine plantation farming which is extensive in this area, large extensions of native vegetation are logged to plant pines. Oil and gas development is a potential threat in the area the species is found.

Habitats préférentiels (classification IUCN)

  • 1_4Forest - Temperate
Mesures de conservation recommandéesExpert
Yucca cernua has not been found in any protected areas in Texas. There are currently no conservation plans in place for Yucca cernua. In the state of Texas, Yucca cernua is currently listed as Global Rank: G2G3 and State Rank S1 (Texas Parks and Wildlife Department, 2019). Yucca cernua is maintained in ex-situ collections in nine botanical gardens (BGCI 2019).
Actions de conservation (3)Expert
  • 1_1Site/area protection
  • 4_3Awareness & communications
  • 5_1_2National level
Stress écologiques (5)Expert
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
  • 2_1Species mortality
  • 2_1Species mortality
Priorités de recherche (4)Expert
  • 2_1Species Action/Recovery Plan
  • 2_2Area-based Management Plan
  • 3_1Population trends
  • 3_4Habitat trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Nearctic

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Succulent - shrub
Références bibliographiques (3)Expert
  1. IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-2. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 13 June 2020).
  2. BGCI. 2013. Plant search. London, Botanic Gardens Conservation International Available at: <a href="http://www.bgci.org/plant_search.php/">http://www.bgci.org/plant_search.php/</a>. (Accessed: 21/02/2013).
  3. Keith, E.L. 2003. <i>Yucca cernua</i> (Agavaceae: Series Rupicolae), a New Species from Newton and Jasper Counties in Eastern Texas. <i>SIDA, Contributions to Botany</i> 20(3): 891 - 898.
Évaluateurs & contributeurs (3)Expert
assessor
Clary, K., Puente, R., Keith, E., Salywon, A. & Hodgson, W.
evaluator
Goettsch, B.
facilitators
Robertson, S.

Clary, K., Puente, R., Keith, E., Salywon, A. & Hodgson, W. 2020. Yucca cernua. The IUCN Red List of Threatened Species 2020: e.T117423110A117469982. Accessed on 05 May 2026.

Répartition mondiale

Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.

Consulter sur les bases externes

Observations & statuts

iNaturalist

Bibliographie

BHLOpenAlex