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All
Accepted Names
Exclude infraspecific names

NameSynonym ofaisortsortacc
Yucca angustissima Engelm. ex Trel.  a Yucca angustissimaEngelm. ex Trel.  
Yucca elata Engelm.  a Yucca elataEngelm.  
Yucca filamentosa L.  a Yucca filamentosaL.  
Yucca flaccida Haw.  a Yucca flaccidaHaw.  
Yucca glauca Nutt.  a Yucca glaucaNutt.  
Yucca harrimaniae Trel.  a Yucca harrimaniaeTrel.  
Yucca rupicola Scheele  a Yucca rupicolaScheele  
Yucca radiosa (Engelm.) Trel. Yucca elata Engelm.   Yucca radiosa(Engelm.) Trel. Yucca elataEngelm.
Yucca angustifolia Pursh var. radiosa Engelm. Yucca elata Engelm. var. elata  iYucca angustifoliaPursh var.radiosa Engelm. Yucca elataEngelm. var.elata
Yucca angustifolia Pursh Yucca glauca Nutt.   Yucca angustifoliaPursh Yucca glaucaNutt.
Yucca baileyi Wooton & Standl.  a Yucca baileyiWooton & Standl.  
Yucca acrotricha Schiede Dasylirion acrotrichum (Schiede) Zucc.   Yucca acrotrichaSchiede Dasylirion acrotrichum(Schiede) Zucc.
Yucca constricta Buckley  a Yucca constrictaBuckley  
Yucca elata Engelm. var. elata  aiYucca elataEngelm. var.elata  
Yucca elata Engelm. var. verdiensis (McKelvey) Reveal  aiYucca elataEngelm. var.verdiensis (McKelvey) Reveal  
Yucca verdiensis McKelvey Yucca elata Engelm. var. verdiensis (McKelvey) Reveal   Yucca verdiensisMcKelvey Yucca elataEngelm. var.verdiensis (McKelvey) Reveal
Yucca angustissima Engelm. ex Trel. var. angustissima  aiYucca angustissimaEngelm. ex Trel. var.angustissima  
Yucca angustissima Engelm. ex Trel. var. avia Reveal  aiYucca angustissimaEngelm. ex Trel. var.avia Reveal  
Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal  aiYucca angustissimaEngelm. ex Trel. var.toftiae (S. L. Welsh) Reveal  
Yucca toftiae S. L. Welsh Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal   Yucca toftiaeS. L. Welsh Yucca angustissimaEngelm. ex Trel. var.toftiae (S. L. Welsh) Reveal
Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal  aiYucca angustissimaEngelm. ex Trel. var.kanabensis (McKelvey) Reveal  
Yucca kanabensis McKelvey Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal   Yucca kanabensisMcKelvey Yucca angustissimaEngelm. ex Trel. var.kanabensis (McKelvey) Reveal
Yucca elata Engelm. subsp. verdiensis (McKelvey) Hochstätter Yucca elata Engelm. var. verdiensis (McKelvey) Reveal  iYucca elataEngelm. subsp. verdiensis (McKelvey) Hochstätter Yucca elataEngelm. var.verdiensis (McKelvey) Reveal
Yucca elata Engelm. subsp. utahensis (McKelvey) Hochstätter Yucca utahensis McKelvey  iYucca elataEngelm. subsp. utahensis (McKelvey) Hochstätter Yucca utahensisMcKelvey
Yucca utahensis McKelvey  a Yucca utahensisMcKelvey  
Yucca angustissima Engelm. ex Trel. subsp. toftiae (S. L. Welsh) Hochstätter Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal  iYucca angustissimaEngelm. ex Trel. subsp. toftiae (S. L. Welsh) Hochstätter Yucca angustissimaEngelm. ex Trel. var.toftiae (S. L. Welsh) Reveal
Yucca angustissima Engelm. ex Trel. subsp. kanabensis (McKelvey) Hochstätter Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal  iYucca angustissimaEngelm. ex Trel. subsp. kanabensis (McKelvey) Hochstätter Yucca angustissimaEngelm. ex Trel. var.kanabensis (McKelvey) Reveal
Yucca angustissima Engelm. ex Trel. subsp. avia (Reveal) Hochstätter Yucca angustissima Engelm. ex Trel. var. avia Reveal  iYucca angustissimaEngelm. ex Trel. subsp. avia (Reveal) Hochstätter Yucca angustissimaEngelm. ex Trel. var.avia Reveal
Yucca neomexicana Wooton & Standl.  a Yucca neomexicanaWooton & Standl.  
Yucca harrimaniae Trel. var. neomexicana (Wooton & Standl.) Reveal Yucca neomexicana Wooton & Standl.  iYucca harrimaniaeTrel. var.neomexicana (Wooton & Standl.) Reveal Yucca neomexicanaWooton & Standl.
Yucca harrimaniae Trel. subsp. neomexicana (Wooton & Standl.) Hochstätter Yucca neomexicana Wooton & Standl.  iYucca harrimaniaeTrel. subsp. neomexicana (Wooton & Standl.) Hochstätter Yucca neomexicanaWooton & Standl.
Yucca reverchonii Trel.  a Yucca reverchoniiTrel.  
Yucca arkansana Trel.  a Yucca arkansanaTrel.  
Yucca arkansana Trel. subsp. arkansana  aiYucca arkansanaTrel. subsp. arkansana  
Yucca arkansana Trel. subsp. louisianensis (Trel.) Hochstätter  aiYucca arkansanaTrel. subsp. louisianensis (Trel.) Hochstätter  
Yucca louisianensis Trel. Yucca arkansana Trel. subsp. louisianensis (Trel.) Hochstätter   Yucca louisianensisTrel. Yucca arkansanaTrel. subsp. louisianensis (Trel.) Hochstätter
Yucca baileyi Wooton & Standl. var. navajoa (J. M. Webber) J. M. Webber Yucca baileyi Wooton & Standl.  iYucca baileyiWooton & Standl. var.navajoa (J. M. Webber) J. M. Webber Yucca baileyiWooton & Standl.
Yucca thompsoniana Trel.  a Yucca thompsonianaTrel.  
Yucca faxoniana Sarg.  a Yucca faxonianaSarg.  
Yucca cernua E. L. Keith  a Yucca cernuaE. L. Keith  
Yucca campestris McKelvey  a Yucca campestrisMcKelvey  
Yucca pallida McKelvey  a Yucca pallidaMcKelvey  
Yucca rostrata Engelm. ex Trel.  a Yucca rostrataEngelm. ex Trel.  
Yucca angustissima Engelm. ex Trel. subsp. angustissima Yucca angustissima Engelm. ex Trel. var. angustissima  iYucca angustissimaEngelm. ex Trel. subsp. angustissima Yucca angustissimaEngelm. ex Trel. var.angustissima
Yucca angustifolia Pursh var. angustifolia Yucca glauca Nutt.  iYucca angustifoliaPursh var.angustifolia Yucca glaucaNutt.
Yucca baileyi Wooton & Standl. var. baileyi Yucca baileyi Wooton & Standl.  iYucca baileyiWooton & Standl. var.baileyi Yucca baileyiWooton & Standl.
Yucca elata Engelm. subsp. elata Yucca elata Engelm. var. elata  iYucca elataEngelm. subsp. elata Yucca elataEngelm. var.elata
Yucca harrimaniae Trel. var. harrimaniae Yucca harrimaniae Trel.  iYucca harrimaniaeTrel. var.harrimaniae Yucca harrimaniaeTrel.
Yucca harrimaniae Trel. subsp. harrimaniae Yucca harrimaniae Trel.  iYucca harrimaniaeTrel. subsp. harrimaniae Yucca harrimaniaeTrel.
  1. Yucca acrotricha Schiede (=Dasylirion acrotrichum (Schiede) Zucc.)
  2. Yucca angustifolia Pursh (=Yucca glauca Nutt.)
  3. Yucca angustifolia Pursh var. angustifolia (=Yucca glauca Nutt.)
  4. Yucca angustifolia Pursh var. radiosa Engelm. (=Yucca elata Engelm. var. elata)
  5. Yucca angustissima Engelm. ex Trel.
  6. Yucca angustissima Engelm. ex Trel. var. angustissima
  7. Yucca angustissima Engelm. ex Trel. var. avia Reveal
  8. Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal
  9. Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal
  10. Yucca angustissima Engelm. ex Trel. subsp. angustissima (=Yucca angustissima Engelm. ex Trel. var. angustissima)
  11. Yucca angustissima Engelm. ex Trel. subsp. avia (Reveal) Hochstätter (=Yucca angustissima Engelm. ex Trel. var. avia Reveal)
  12. Yucca angustissima Engelm. ex Trel. subsp. kanabensis (McKelvey) Hochstätter (=Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal)
  13. Yucca angustissima Engelm. ex Trel. subsp. toftiae (S. L. Welsh) Hochstätter (=Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal)
  14. Yucca arkansana Trel.
  15. Yucca arkansana Trel. subsp. arkansana
  16. Yucca arkansana Trel. subsp. louisianensis (Trel.) Hochstätter
  17. Yucca baileyi Wooton & Standl.
  18. Yucca baileyi Wooton & Standl. var. baileyi (=Yucca baileyi Wooton & Standl.)
  19. Yucca baileyi Wooton & Standl. var. navajoa (J. M. Webber) J. M. Webber (=Yucca baileyi Wooton & Standl.)
  20. Yucca campestris McKelvey
  21. Yucca cernua E. L. Keith
  22. Yucca constricta Buckley
  23. Yucca elata Engelm.
  24. Yucca elata Engelm. var. elata
  25. Yucca elata Engelm. var. verdiensis (McKelvey) Reveal
  26. Yucca elata Engelm. subsp. elata (=Yucca elata Engelm. var. elata)
  27. Yucca elata Engelm. subsp. utahensis (McKelvey) Hochstätter (=Yucca utahensis McKelvey)
  28. Yucca elata Engelm. subsp. verdiensis (McKelvey) Hochstätter (=Yucca elata Engelm. var. verdiensis (McKelvey) Reveal)
  29. Yucca faxoniana Sarg.
  30. Yucca filamentosa L.
  31. Yucca flaccida Haw.
  32. Yucca glauca Nutt.
  33. Yucca harrimaniae Trel.
  34. Yucca harrimaniae Trel. var. harrimaniae (=Yucca harrimaniae Trel.)
  35. Yucca harrimaniae Trel. var. neomexicana (Wooton & Standl.) Reveal (=Yucca neomexicana Wooton & Standl.)
  36. Yucca harrimaniae Trel. subsp. harrimaniae (=Yucca harrimaniae Trel.)
  37. Yucca harrimaniae Trel. subsp. neomexicana (Wooton & Standl.) Hochstätter (=Yucca neomexicana Wooton & Standl.)
  38. Yucca kanabensis McKelvey (=Yucca angustissima Engelm. ex Trel. var. kanabensis (McKelvey) Reveal)
  39. Yucca louisianensis Trel. (=Yucca arkansana Trel. subsp. louisianensis (Trel.) Hochstätter)
  40. Yucca neomexicana Wooton & Standl.
  41. Yucca pallida McKelvey
  42. Yucca radiosa (Engelm.) Trel. (=Yucca elata Engelm.)
  43. Yucca reverchonii Trel.
  44. Yucca rostrata Engelm. ex Trel.
  45. Yucca rupicola Scheele
  46. Yucca thompsoniana Trel.
  47. Yucca toftiae S. L. Welsh (=Yucca angustissima Engelm. ex Trel. var. toftiae (S. L. Welsh) Reveal)
  48. Yucca utahensis McKelvey
  49. Yucca verdiensis McKelvey (=Yucca elata Engelm. var. verdiensis (McKelvey) Reveal)


ILRI Germplasm Policy (excerpts)

The International Livestock research Institute (ILRI) maintains a collection of forage germplasm as a global public good. The material was acquired prior to the entry into force of the Convention on Biological Diversity; or if it was acquired after the entering into force of the Convention on Biological Diversity, it was obtained with the understanding that it was held in trust and could be made available for any agricultural research, breeding and training purposes under the terms and conditions set out in the agreement between the ILRI and FAO dated 26 October 1994. On 16 October 2006, ILRI signed an agreement with the Governing Body of the International Treaty on Plant Genetic Resources for Food and Agriculture (the Treaty) placing these in trust collections of Plant Genetic Resources for Food and Agriculture (PGRFA) within the purview of the Treaty.

In accordance with this Agreement, all shipments of PGRFA of crops listed in Annex 1 to the Treaty (shipments of PGRFA under the Multilateral System) will be subject to the terms and conditions of the Standard Material Transfer Agreement (SMTA). In the event that the SMTA (attached) is used for the transfer of Plant Genetic Resources for Food and Agriculture other than those listed in Annex 1 of the Treaty: i) The references in the SMTA to the "Multilateral System" shall not be interpreted as limiting the application of the SMTA to Annex 1 Plant Genetic Resources for Food and Agriculture, and in the case of Article 6.2 of the SMTA shall mean "under this Agreement". ii) The reference in Article 6.11 and Annex 3 of the SMTA to "Plant Genetic Resources for Food and Agriculture belonging to the same crop, as set out in Annex 1 to the Treaty" shall be taken to mean "Plant Genetic Resources for Food and Agriculture belonging to the same crop".

The material is held in trust and the recipient has no rights to obtain Intellectual Property Rights (IPRs) on the material or related information. The recipient may utilize and conserve the material for research, breeding and training and may distribute it to other parties provided such parties accept the terms and conditions of the SMTA .

ILRI will provide forage seeds in small experimental quantities of between 1 and 20 grams without charge from the germplasm collection under the SMTA as appropriate for the crop as part of its policy of maximizing the utilization of material for research, breeding and training. Larger quantities sufficient to sow up to one quarter of a hectare of a limited number of promising accessions will require that requesters cover the costs of production and shipping.

ILRI makes no warranties as to the safety or title of the material, nor as to the accuracy or correctness of any passport or other data provided with the material. Neither does it make any warranties as to the quality, viability, or purity (genetic or mechanical) of the material being furnished. The phytosanitary condition of the material is warranted only as described in the attached phytosanitary certificate. The recipient assumes full responsibility for complying with the recipient nation’s quarantine and biosafety regulations and rules as to import or release of genetic material.