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Taxon:  Pycreus polystachyos (Rottb.) P. Beauv.



Summary
Genus:
Pycreus
Family:
Cyperaceae
Subfamily:
Cyperoideae
Tribe:
Cypereae
Nomen number:
402865
Place of publication:
Fl. Oware 2:48, t. 86. 1816
Verified:
05/04/2012 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. Arechavaleta, M. et al., eds. Lista preliminar de especies silvestres de Cabo Verde: hongos, plantas y animales terrestres. 2005 Note: accepts
  2. Brako, L. & J. L. Zarucchi. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45. 1993 Note: accepts
  3. Chinese Academy of Sciences. Flora reipublicae popularis sinicae. 1959- Note: accepts
  4. CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
  5. Dassanayake, M. D. & F. R. Fosberg, eds. A revised handbook to the flora of Ceylon. 1980- Note: accepts
  6. Davidse, G. et al., eds. Flora mesoamericana. 1994 Note: accepts
  7. FNA Editorial Committee. Flora of North America. 1993- http://floranorthamerica.org/
  8. Foreman, D. B. & N. G. Walsh. Flora of Victoria. 1993-
  9. Germishuizen, G. & N. L. Meyer, eds. Plants of southern Africa: an annotated checklist. Strelitzia 14. 2003 Note: accepts
  10. Govaerts, R. & D. A. Simpson. World checklist of Cyperaceae, sedges. 2007 Note: accepts
  11. Grierson, A. J. C. & D. J. Long. Flora of Bhutan including a record of plants from Sikkim. 1984- Note: accepts
  12. Haines, R. W. & K. A. Lye. Sedges and rushes of East Africa. 1983
  13. Harden, G. J., ed. Flora of New South Wales. 1990-1993
  14. Hedberg, I. & S. Edwards. Flora of Ethiopia. 1989- (and Eritrea. 2000)
  15. Hnatiuk, R. J. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11. 1990
  16. Howard, R. Flora of the lesser Antilles. 1974-1989 Note: accepts
  17. Jørgensen, P. M. & S. León-Yánez, eds. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75. 1999 Note: accepts
  18. Keay, R. W. J. & F. N. Hepper. Flora of west tropical Africa, ed. 2. 1953-1972 Note: accepts
  19. Liogier, H. A. & L. F. Martorell. Flora of Puerto Rico and adjacent islands: a systematic synopsis. 1982 Note: accepts
  20. Ohwi, J. Flora of Japan (Engl. ed.). 1965
  21. Rechinger, K. H., ed. Flora iranica. 1963- Note: accepts
  22. Rogers, G. & B. McClain. 1998. The sedges (Cyperaceae) of Barbados. Rhodora 100:408. Note: accepts
  23. Smith, A. C. Flora vitiensis nova. 1979-1991 Note: accepts
  24. Steenis, C. G. G. J. van, ed. Flora malesiana. 1948- Note: accepts
  25. Townsend, C. C. & E. Guest. Flora of Iraq. 1966- Note: accepts
  26. Tucker, G. C. 1994. Revision of the Mexican species of Cyperus (Cyperaceae). Syst. Bot. Monogr. 43:72. http://herbarium.lsa.umich.edu/SBMweb/index.html
  27. Yatskievych, G. Steyermark's Flora of Missouri, revised edition. 1999- Note: accepts
  28. Zuloaga, F. O. & O. Morrone, eds. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. 1996, 1999 Note: accepts
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.