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Taxon:  Conyza canadensis (L.) Cronquist



Summary
Genus:
Conyza
Family:
Asteraceae (alt. Compositae)
Nomen number:
104171
Place of publication:
Bull. Torrey Bot. Club 70:632. 1943
Verified:
03/04/2012 ARS Systematic Botanists.
Accessions:
0 (0  active, 0  available) in National Plant Germplasm System. 
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
No images
Reference(s)
  1. Adams, C. Flowering plants of Jamaica. 1972 Note: accepts
  2. Aldén, B., S. Ryman & M. Hjertson. Våra kulturväxters namn - ursprung och användning. Formas, Stockholm (Handbook on Swedish cultivated and utility plants, their names and origin). 2009 Note: accepts
  3. Allan, H. H. B. et al. Flora of New Zealand. 1961- Note: accepts
  4. Balick, M. J. et al. Checklist of the vascular plants of Belize, with common names and uses. Mem. New York Bot. Gard. 85. 2000
  5. Beetle, A. A. Recommended plant names. Univ. Wyoming Agr. Exp. Sta. Res. J. 31. 1970 Note: accepts
  6. Bosser, J. M. et al., eds. Flores des Mascareignes. 1976- Note: accepts
  7. Brako, L. & J. L. Zarucchi. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45. 1993 Note: accepts
  8. CIBA-GEIGY, Basel, Switzerland. The CIBA-GEIGY Weed Tables. 1974 Note: accepts
  9. CONABIO. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad en Mexico. Sistema Integrado de Información Taxonómica (SIIT) (on-line resource). Note: accepts
  10. Correll, D. S. & H. B. Correll. Flora of the Bahama archipelago. 1982 Note: accepts
  11. Cronquist, A. et al. Intermountain flora. 1972- Note: accepts
  12. Davis, P. H., ed. Flora of Turkey and the east Aegean islands. 1965-1988 Note: accepts
  13. Duke, J. A. et al. CRC Handbook of medicinal herbs. 2002 Note: accepts
  14. Erhardt, W. et al. Der große Zander: Enzyklopädie der Pflanzennamen. 2008 Note: accepts
  15. Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). http://www.emplantbase.org/home.html
  16. FNA Editorial Committee. Flora of North America. 1993- Note: accepts
  17. Fosberg, F. R. & M.-H. Sachet. Flora of Micronesia, Smithsonian Contr. Bot. 1975- Note: accepts
  18. Funk, V. et al. Checklist of the plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro; Guyana, Surinam, French Guiana). Contr. U.S. Natl. Herb. 55:1-584. 2007 Note: accepts
  19. Germishuizen, G. & N. L. Meyer, eds. Plants of southern Africa: an annotated checklist. Strelitzia 14. 2003 Note: accepts
  20. Gleason, H. A. & A. Cronquist. Manual of vascular plants of northeastern United States and adjacent Canada. 1963 Note: accepts
  21. Grierson, A. J. C. & D. J. Long. Flora of Bhutan including a record of plants from Sikkim. 1984- Note: accepts
  22. Hansen, A. & P. Sunding. Flora of Macaronesia: checklist of vascular plants, ed. 4. Sommerfeltia vol. 17. 1993 Note: accepts
  23. Hara, H. et al. An enumeration of the flowering plants of Nepal. 1978-1982 Note: accepts
  24. Hitchcock, C. L. et al. Vascular plants of the Pacific Northwest. 1955-1969 Note: accepts
  25. Hokche, O. et al. Nuevo catálogo de la flora vascular de Venezola. 2008 Note: accepts
  26. Howard, R. Flora of the lesser Antilles. 1974-1989 Note: accepts
  27. Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource). Note: accepts
  28. Iwatsuki, K. et al. Flora of Japan. 1993- Note: accepts
  29. Jørgensen, P. M. & S. León-Yánez, eds. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75. 1999 Note: accepts
  30. Lasser, T., ed. Flora de Venezuela. 1964- Note: accepts
  31. Lazarides, M. & B. Hince. CSIRO Handbook of Economic Plants of Australia. 1993 Note: accepts
  32. León (J. S. Sauget) & Alain (E. E. Liogier). Flora de Cuba. 1946-1962; suppl. 1969 Note: accepts
  33. Liogier, H. A. & L. F. Martorell. Flora of Puerto Rico and adjacent islands: a systematic synopsis, ed. 2. 2000 Note: accepts
  34. Magee, D. W. & H. E. Ahles. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. 1999 Note: accepts
  35. Martin, W. C. & C. R. Hutchins. A flora of New Mexico. 1980 Note: accepts
  36. McGregor, R. L. et al. (The Great Plains Flora Association). Atlas of the Flora of the Great Plains. 1977 Note: accepts
  37. McGregor, R. L. et al. (The Great Plains Flora Association). Flora of the Great Plains. 1986 Note: accepts
  38. McGuffin, M., J. T. Kartesz, A. Y. Leung, & A. O. Tucker. Herbs of commerce, ed. 2. 2000 Note: accepts
  39. McVaugh, R. Flora Novo-Galiciana. 1983- Note: accepts
  40. Proctor, G. R. Flora of the Cayman Islands. Kew Bulletin Additional Series XI. 1984 Note: accepts
  41. Radford, A. E. et al., eds. Vascular flora of the southeastern United States. 1980- Note: accepts
  42. Rechinger, K. H., ed. Flora iranica. 1963- Note: accepts
  43. Rehm, S. Multilingual dictionary of agronomic plants. 1994 Note: accepts
  44. Sell, P. & G. Murrell. Flora of Great Britain and Ireland. 1996- Note: accepts
  45. Sharma, B. D. et al., eds. Flora of India. 1993- Note: accepts
  46. Smith, A. C. Flora vitiensis nova. 1979-1991 Note: accepts
  47. Standley, P. C. & J. A. Steyermark. Flora of Guatemala. 1946-1976 Note: accepts
  48. Stevens, W. D. et al., eds. Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85(1-3). 2001 Note: accepts
  49. Turrill, W. B. et al., eds. Flora of tropical East Africa. 1952- Note: accepts
  50. Tutin, T. G. et al., eds. Flora europaea. 1964-1980 Note: accepts
  51. Vibrans, H., ed. Malezas de México (on-line resource). Note: http://www.conabio.gob.mx/malezasdemexico/asteraceae/conyza-canadensis/fichas/pagina1.htm
  52. Weaver, S. E. 2001. The biology of Canadian weeds. 115. Conyza canadensis. Canad. J. Pl. Sci. 81:867-875. Note: accepts
  53. Woodson, R. E. & R. W. Schery, eds. Flora of Panama. 1943-1980 Note: accepts
  54. Wu Zheng-yi & P. H. Raven et al., eds. Flora of China (English edition). 1994- http://www.efloras.org/browse.aspx?flora_id=2
  55. Webster's third new international dictionary. 1961 Note: = Erigeron canadensis
Common names
Distribution
Economic Uses


NGBT Plant Germplasm System Distribution Policy

Plant germplasm is distributed to scientists, educators, producers and other bona fide research and education entities from National genebank of Tunisia active collection sites. The NGBT Curator and/or Research Leader will, in accordance with current NPGS policies and procedures, determine the legitimacy of a request when necessary.

Distributions to fulfill requests for repatriation of subsamples of germplasm collections to a country or community of origin, especially following natural or man-made catastrophes, are considered a high priority.

Although distributions for research, education, and repatriation are of the highest priority, the NPGS also encourages various seed-saver organizations and public gardens to conduct germplasm conservation activities that engage many individuals and groups throughout the country. Elements of the NPGS cooperate with seed-saver organizations and public gardens and may store germplasm for and distribute germplasm to such organizations.

Distribution of germplasm from NPGS collections to fulfill requests from individuals seeking free germplasm strictly for home use is generally considered an inappropriate use of limited resources and conflicts with U.S. Government policy of not competing with commercial enterprises. Requestors can be asked, in an appropriate manner, to justify the use of specific NPGS germplasm instead of suitable commercially available germplasm.

Accessions listed in the Germplasm Resources Information Network (GRIN) database as “not available” due to insufficient or low viability seed and/or scheduled for regeneration will generally not be available for distribution.

Other accessions are listed in GRIN as “not available” because they are not a part of the NPGS collection per se, but are conserved in NPGS genebanks to meet specific needs as described later in the section entitled “Categories of Germplasm Distributed and Availability.” In this category are certain accessions of improved germplasm that are only available from the owner/developer. Other accessions require that specific conditions be met by the requestor before distribution is possible.

NPGS sites will not distribute germplasm internationally when they cannot comply with the importation or quarantine requirements of the recipient country unless the requestor can provide a valid waiver of such requirements.