Bletia warnockii
(Ames & Correll) Sosa & M.W.Chase
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Bletia warnockii.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères D↘Décroissante- Évaluation
- 2015 · v3.1
- Altitude
- – m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
There are only 20 known sites of occurrence for this species in Texas. The species is also known to occur at four sites in Arizona, although at one site of historic the species has not been seen since 1992 (United States Forest Service unpubl. data). The number of individual mature individuals in the population is not known. However, for sites where the number of mature individuals has been anecdotally recorded during site-visits, most have had only one to 10 individuals during any given visit. Therefore, the total population size annually is likely less than 250 mature individuals. We calculated an area of occupancy (AOO) of 104 km2 and an extent of occurrence (EOO) of 742,042.95 km2 for this taxon. The species is referred to as “sporadic and rare” by the United States Forest Service (unpubl. data). Coleman described the species as rare throughout its range (2001). As the species is no longer seen at one site where it was previously recorded, it is reasonable to assume that the population has declined.
Menaces identifiées(6 menaces classées CMP-IUCN)
1_1Housing & urban areasOngoing1_2Commercial & industrial areasOngoing2_1_3Agro-industry farmingOngoing5_2_1Intentional use (species is the target)Ongoing6_1Recreational activitiesOngoing6_3Work & other activitiesOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Habitat destruction and harm to individual plants are credible threats to this species. Although there is no documented evidence of collection of this species, as with many orchid species, this orchid may be subject to collection from the wild by orchid enthusiasts.
Habitats préférentiels (classification IUCN)
1_4Forest - Temperate
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Under the Arizona Native Plant Law the Texas Crested Coralroot Orchid is “Highly Safeguarded” (Arizona Department of Agriculture webpage:https://agriculture.az.gov/protected-native-plants-categories). However, under Arizona law, if a protected plant species occurs on private land, the landowner may destroy, remove, sell or give away any protected plant with proper notice to the Arizona Department of Agriculture, assuming required permits have been procured. Only one site of known occurrence in Arizona can be confirmed to exist on public land, although at this particular site the species has not been seen since 1992 (United States Forest Service unpubl. data). While nominated for listing under the United States Endangered Species Act in the early 1980s, the species was not listed and has no federal protection. This species is not protected in Texas. The protective status of the species is not known for Mexico. The conservation actions that would most benefit the Texas Crested Coralroot Orchid are habitat protection and prohibitions against the injury, destruction or collection of individual plants. This species is listed on CITES Appendix II (CITES 2015).
Actions de conservation (13)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_1Site/area management2_2Invasive/problematic species control2_3Habitat & natural process restoration3_1_2Trade management3_3_1Reintroduction3_3_2Benign introduction3_4_1Captive breeding/artificial propagation4_1Formal education4_3Awareness & communications5_1_2National level5_1_3Sub-national level
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational
Priorités de recherche (9)Research Needed Classification — IUCNExpert
1_1Taxonomy1_2Population size, distribution & trends1_3Life history & ecology1_5Threats2_1Species Action/Recovery Plan2_2Area-based Management Plan3_1Population trends3_2Harvest level trends3_3Trade trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Nearctic
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Forb or Herb
Références bibliographiques (9)Sources scientifiques de l'évaluation IUCNExpert
- CITES. 2015. The CITES Appendices. Available at: <a href="https://cites.org/eng/app/appendices.php">https://cites.org/eng/app/appendices.php</a>. (Accessed: July 2015).
- IUCN. 2015. The IUCN Red List of Threatened Species. Version 2015-4. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 19 November 2015).
- Kennedy, A.H., Taylor, D.L. and Watson, L.E. 2011. Mycorrhizal Specificity in the Fully Mycoheterotrophic <i>Hexalectris</i> Raf. (Orchidaceae: Epidendroideae). <i>Molecular Ecology</i> 20(6): 1303-1316.
- Kennedy, A. and Watson, L. 2010. Species Delimitations and Phylogenetic Relationships Within the Fully Myco-heterotrophic <i>Hexalectris</i> (Orchidaceae). <i>Systematic Botany </i> 31(1): 64-67.
- United States Forest Service, Southwest Region. 2007. Regional Forester’s List of Sensitive Plants. Unpublished.
- Catling, P.M. 2004. A Synopsis of the Genus <i>Hexalectris</i> in the United States and a New Variety of <i>Hexalectris revoluta</i>. <i>Native Orchid Conference Journal </i> 1: 5-25.
- Coleman, R.A. 2001. Tracking rare orchids (Orchidaceae). In: J. Maschinski and L. Holter (eds), Southwestern Rare and Endangered plants: Proceedings of the Third Conference, pp. 95-98. Flagstaff, Arizona.
- Liggio, J. and Liggio, A.O. 1999. <i>Wild Orchids of Texas</i>. University of Texas Press, Austin.
- Arizona Department of Agriculture. Protected Native Plants by Categories-Highly Safeguarded Protected Native Plants. (Accessed: June 15 2014).
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Goedeke, T., Sharma, J., Treher, A., Frances, A. & Poff, K.
evaluator
Rankou, H.
Goedeke, T., Sharma, J., Treher, A., Frances, A. & Poff, K. 2015. Hexalectris warnockii. The IUCN Red List of Threatened Species 2015: e.T64176203A64176207. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s
Consulter sur les bases externes
Observations & statuts
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (2)— redirigent vers cette page
- Hexalectris warnockiiAmes & Correll
- Hexalectris warnockii f. flavidaCatling
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).