dcsimg
Description
provided by Flora of Zimbabwe
Dioecious trees or shrubs, often with proproots near the base. Branches with leaf scars. Leaves crowded at the ends of the branches, in 3 ranks, appearing as a spiral (hence the name, screw pines), glabrous, entire but armed on the margins, sometimes with prickles on the adaxial side of the midrib. Inflorescences terminal, many-flowered. Flowers unisexual, rudimentary. Male flowers: stamens many; anthers 2-thecous. Female flowers of several 1-locular carpels. Fruiting inflorescence of many drupes crowded into a large subspherical to ellipsoid structure.
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Mark Hyde, Bart Wursten and Petra Ballings
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Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Pandanaceae Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/cult/family.php?family_id=265
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Mark Hyde
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Bart Wursten
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Petra Ballings
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Flora of Zimbabwe
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265/Description
Pandanaceae
provided by wikipedia EN

Pandanaceae is a family of flowering plants native to the tropics and subtropics of the Old World, from West Africa through the Pacific. It contains 982 known species[2] in five genera,[3] of which the type genus, Pandanus, is the most important. It is an ancient family dating from the early to mid-Cretaceous.[4]

Characteristics

Pandanaceae includes trees, shrubs, lianas, vines, epiphytes, and perennial herbs.[5] Stems may be simple or bifurcately branched, and may have aerial prop roots. The stems bear prominent leaf scars. The leaves are very long and narrow, sheathing, simple, undivided, with parallel veins; the leaf margins and abaxial midribs are often prickly.[6]

The plants are dioecious. The inflorescences are terminally borne racemes, spikes or umbels, with subtended spathes, which may be brightly colored. The flowers are minute and lack perianths. Male flowers contain numerous stamens with free or fused filaments. Female flowers have a superior ovary, usually of many carpels in a ring, but may be reduced to a row of carpels or a single carpel. Fruits are berries or drupes,[5] usually multiple.[7]

Genera

Pandanaceae includes five genera: Benstonea, Freycinetia, Martellidendron, Pandanus, and Sararanga.[3] Benstonea (as subgenus "Acrostigma")[8] and Martellidendron[4] were formerly considered subgenera of Pandanus, but were recognized as distinct genera based on DNA sequencing.[4][8]

 src= Wikimedia Commons has media related to Pandanaceae.

References

  1. ^ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-06-26..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
  2. ^ Christenhusz, M. J. M. & Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. Magnolia Press. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.
  3. ^ a b NCBI Taxonomy Browser
  4. ^ a b c ingentaconnect: Recognition of Martellidendron, a new genus of Pandanaceae, and its biogeographic implications
  5. ^ a b eFloras.org: Pandanaceae in Monocot families (USDA)
  6. ^ eFloras.org: Pandanaceae in Flora of China
  7. ^ L. Watson and M. J. Dallwitz. The families of flowering plants: Pandanaceae
  8. ^ a b "Update on the systematics of Benstonea (Pandanaceae): When a visionary taxonomist foresees phylogenetic relationships" (PDF). (50 KB)
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Pandanaceae: Brief Summary
provided by wikipedia EN

Pandanaceae is a family of flowering plants native to the tropics and subtropics of the Old World, from West Africa through the Pacific. It contains 982 known species in five genera, of which the type genus, Pandanus, is the most important. It is an ancient family dating from the early to mid-Cretaceous.

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4395b87ca09d95100b85c3b43ca6bd55