Macrozamia spiralis var. cylindrica

• Interesting Facts
• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Interesting Facts

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]

Taxonomy

Notes

Publishing author : Maiden & Betche Publication : A Census of New South Wales Plants 1916

Basionym author: (C.Moore)

Basionym: Zamiaceae Macrozamia cylindrica C.Moore

Similar Species

Members of the genus Macrozamia

ZipcodeZoo has pages for 21 species, subspecies, varieties, forms, and cultivars in this genus:

M. communis (Burrawang) · M. concinna (Nundle Cycad) · M. diplomera (Cycad) · M. fawcettii (Cycad) · M. fearnsidei (Cycad) · M. flexuosa (Cycad) · M. glaucophylla (Cycad) · M. johnsonii (Cycad) · M. lomandroides (Cycad) · M. lucida (Cycad) · M. macdonnellii (Macdonnell Ranges Cycad) · M. miquelii (Cycad) · M. moorei (Cycad) · M. mountperriensis (Cycad) · M. occidua (Cycad) · M. pauli-guilielmi (Cycad) · M. polymorpha (Cycad) · M. riedlei (Cycad) · M. secunda (Cycad) · M. spiralis (Cycad) · M. stenomera (Cycad)

More Info

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Further Reading

• 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

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed February 4, 2012.

Identifiers

• Global Biodiversity Information Facility Taxonkey: 16023037
• Globally Unique Identifier: urn:lsid:ipni.org:names:60466-3
• International Plant Names Index (IPNI) ID: 60466-3
• Zipcode Zoo Species Identifier: 1181741

Footnotes

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

©2004-2012 David Stang. All rights reserved.