Dioon purpusii

• Overview
• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Vulnerable

Common Names

Click on the language to view common names.

Description

Family Zamiaceae

Plants superficially palmlike or fernlike, perennial , evergreen , dioecious. Stems subterranean with exposed apex or aboveground, fleshy , stout, cylindric , simple or irregularly branched. Roots with small secondary roots; coral-like roots developing at base of stem at or below soil surface. Leaves pinnately compound , spirally clustered at stem apex, leathery, petiole and rachis unarmed [with stout spines]; leaflets entire or dentate [spinose ], venation dichotomous [netted ]; resin canals absent. Cones axillary , appearing terminal , short-peduncled [sessile], disintegrating at maturity; sporophylls densely crowded, spirally arranged , often covered with indument . Pollen cones soon shed, generally smaller and more numerous than seed cones; sporophylls bearing many crowded, small microsporangia (pollen sacs ) adaxially; pollen spheric, not winged . Seed cones persistent for a year or more, 1(--2) per plant, nearly globose to ovoid , tapering sharply or blunt at apex; sporophylls peltate, thickened and laterally expanded distally, bearing 2(--3) ovules. Seeds angular, inner coat hardened, outer coat fleshy, often brightly colored ; cotyledons 2.

Genera 9, species ca. 100 (1 genus, 1 species in the flora ) : primarily tropical to warm temperate regions , North Americ, Central America, South America, Africa, Australia.[1]

Physical Description

Biology

Growth

Culture: Space 4-6' apart.

Soil: Minimum pH: 6.1 • Maximum pH: 7.8

Sunlight: Sun Exposure: Sun to Partial Shade.

Moisture: Drought Tolerance: High

Temperature: Cold Hardiness: 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

Unambiguous Synonyms

1. Dioon Edule Purpusii

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: Wilson K .L.

Similar Species

Members of the genus Dioon

ZipcodeZoo has pages for 33 species, subspecies, varieties, forms, and cultivars in this genus:

D. aculeatum · D. angustifolium · D. argenteum · D. califanoi (Cycad) · D. caputoi (Plama Real) · D. dohenyii · D. edule (Edible-Seeded Mexican Dioon) · D. edule angustifolium · D. edule 'Duner' (Chestnut Dioon) · D. edule f. lanuginosum · D. edule 'Jacala Hidalgo' (Cycad) · D. edule 'Palma Sola' (Chestnut Dioon) · D. edule 'Rio Verde' (Chestnut Dioon) · D. edule var. angustifolium (Cycad) · D. edule var. edule · D. edule var. lanuginosum · D. edule var. queretaro (Cycad) · D. holmgrenii (Dioon) · D. imbricatum · D. mejiae (Honduras Dioon) · D. merolae (Cycad) · D. merolae 'Las Minas' (Cycad) · D. merolae 'Santiago La Chiguiri' (Golden Dioon) · D. 'Mixtequensis' (Cycad) · D. purpusii (Cycad) · D. pygmaea · D. rzedowskii (Cycad) · D. sonorense · D. spinulosa · D. spinulosum (Mexican Dioon) · D. strobilaceum · D. strobilosum · D. tomasellii (Cycad)

More Info

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• Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• Donaldson, J.S. (ed.) 2003. Cycads. Status Survey and Conservation Action Plan. IUCN/SSC Cycad Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.
• Gymnosperms; structure and evolution, by Charles Joseph Chamberlain with 397 figures. Chicago, Ill., The University of Chicago Press[1935] ENG url p. 62.
• Candolle, A. L. P. de. 1868. Cycadaceae. In: A. P. de Candolle and A. L. P. de Candolle, eds. 1823--1873. Prodromus Systematis Naturalis Regni Vegetabilis.... Paris etc. Vol. 16, part 2, pp. 522--547.
• Johnson, L. A. S. 1959. The families of cycads and the Zamiaceae of Australia. Proc. Linn. Soc. New South Wales 84: 64--117.
  
• Schuster, J. 1932. Cycadaceae. In: H. G. A. Engler, ed. 1900--1953. Das Pflanzenreich.... Berlin. Vol. 99[IV,1], pp. l--168.

Notes

Contributors

• African Regional Workshop (Conservation and Sustainable Management of Trees, Zimbabwe) 1998. Pericopsis elata. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Barneby RC & Forero E, 1994/1995 (from ILDIS).
• Barneby RC & Grimes JW (Monograph 1996/97), 2001-05 (from ILDIS).
• Barneby RC and Forero E, 1994/1995 (from ILDIS).
• Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 & ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
• Brands, S.J. (comp.) 1989-2005. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. [http://sn2000.taxonomy.nl/Taxonomicon/]. Access date: Nov 23, 2005
• Brands, S.J. (comp.) 1989-2006. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed April 21, 2007.
• Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed September 17, 2007.
• Carr, Gerald
• Chappill J, 2001-06 (from ILDIS).
• Cristofolini G, 2001-06 (from ILDIS).
• Donaldson, J.S. 2003. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 19, 2008.
• Fautin, Daphne G. (from Hexacorallians of the World).
• Global Biodiversity Information Facility. Accessed January 27, 2008. http://www.gbif.org Mediated distribution data from provider.
• Nghia, N.H. 1998. Dalbergia entadoides. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• Pippen, Jeffrey S. Jeff's Nature Page. Accessed December 8, 2007.

Data Sources

Accessed through GBIF Data Portal January 30, 2008:

• Comisión nacional para el conocimiento y uso de la biodiversidad, Herbario del Instituto de Ecología, A.C., México

Identifiers

• Biodiversity Heritage Library NamebankID: 3330069
• Catalogue of Life Accepted Name Code: IOP-200000-204
• Globally Unique Identifier: urn:lsid:ipni.org:names:297060-1
• International Plant Names Index (IPNI) ID: 297060-1
• IUCN ID: 42147
• Zipcode Zoo Species Identifier: 432466

Footnotes

1. Garrie P. Landry "Zamiaceae". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]

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