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Topic: Welwitschia mirabilis

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	NamibWeb.com - The online guide to Namibia: Welwitschia Mirabilis
		The Welwitschia is endemic to the Namib desert, i.e.
		The Welwitschia is restricted to a narrow path of this desert.
		The Pforte Welwitschia is 1.2 m tall and the circumference at the base of its leafs is 8.7 m.
	www.namibweb.com /welwitschia.htm (2021 words)

	Welwitschia mirabilis
		Welwitschia is clearly not wind pollinated, as it produces smaller amounts of pollen, with the nectar to attract insects, and the flowers open in succession over an extended period, which also encourages cross-pollination.
		Welwitschia mirabilis was discovered by the Austrian botanist, explorer and medical doctor, Friedrich Welwitsch, in 1859 in the Namib Desert of southern Angola.
		Welwitschia is thought to be a relic from the Jurassic period when gymnosperms dominated the world's flora, its ancestor trapped in an environment that slowly but progressively became more arid, and all its close relatives long since disappeared.
	www.plantzafrica.com /plantwxyz/welwitschia.htm (2567 words)

	Welwitschia Mirabilis
		This Welwitschia is a plant of remarkably bizarre habits and survives in very harsh localities where the annual rainfall is often less than 25 mm and where the coastal fog is equivalent to about further 50 mm.
		The Welwitschia is restricted to a narrow path of this desert.
		The Pforte Welwitschia is 1.2 m tall and the circumference at the base of its leafs is 8.7 m.
	www.african-safari-planner.com /html/African-Wildlife/Plants-Trees/Plants/Welwitschia_Mirabilis.htm (903 words)

	California Wild Winter 2000 - Counterpoints in Science (Site not responding. Last check: 2007-10-14)
		Mirabilis is the Latin for wonderful or astonishing, and Charles Darwin's friend Joseph Hooker, who gave the plant its name, thought it the most interesting but ugliest plant he had ever seen.
		Welwitschia leaves grow at the rate of about five inches per year throughout the life of the plant, arcing out from the thick woody stem onto the desert floor, where the tips are roasted.
		Welwitschia is found only in a fairly narrow strip of land extending from central Namibia to southern Angola.
	www.calacademy.org /calwild/2000winter/stories/counterpoints.html (1470 words)

	Welwitschia mirabilis Cultivation
		Welwitschia mirabilis is an unusual plant endemic to the Namib Desert of South West Africa.
		It is virtually impossible to conclusively state that this is the cause of the decline, given that the seedling appear fine and the plant began to decline not ling after being transplanted which could indicate shock or root disturbance.
		Welwitschia mirabilis is a species that has confounded scientists and cultivators for years.
	florawww.eeb.uconn.edu /reference/welwitschia_mirabilis01.htm (1960 words)

	Welwitschia
		Welwitschia mirabilis in the Namib Desert of southwestern Africa.
		Welwitschia plants are dioecious, with pollen-bearing and seed-bearing cones (strobili) produced on separate male and female plants.
		Welwitschia mirabilis in the Namib Desert of southwestern Africa showing male cones and the main stem axis or crown from which the leaves arise.
	waynesword.palomar.edu /welwit.htm (1101 words)

	Welwitschia mirabilis "Tree tumbo, tumboa, Welwitschiaceae"
		The woody stem of Welwitschia mirabilis widens with age to become a concave disc up to a meter across, from which grow small ramified branch systems that bear pollen and seed cones.
		Welwitschia mirabilis' short, woody, unbranched stem is surmounted by two strap-shaped leaves that grow from a basal meristem throughout the life of the plant, becoming twisted and frayed with the passing centuries.
		Welwitschia mirabilis is difficult to cultivate, requiring desert conditons and room to accommodate its long taproot.
	www.b-and-t-world-seeds.com /40487.html (744 words)

	BGBM: Greenhouses-House A
		Besides the old and young Welwitschia plants in the display glasshouse, thirteen plants of old stock are growing in the Welwitschia house in the nursery (not open to the public for reasons of limited space).
		However, the lack of exact documentation of origin of the plants of the old and presumably heterogeneous stock was a major impediment for a systematic approach to such a study.
		mirabilis, the tardily flowering plants with glaucous-green male cones of "group 2" are of Namibian origin and belong to the new subspecies Welwitschia mirabilis subsp.
	www.bgbm.org /BGBM/garden/bereiche/areas/welwitsh2.htm (379 words)

	Scenic Hills Nursery -- Oak Wilt Specialists in the Texas Hill Country
		While welwitschias are classified with cycads and pines as cone-bearing plants, they are at the same time thought to represent a link to flowering plants.
		A large colony occupies the Welwitschia Plain at the confluence of the Swakop and Khan rivercourses in the northern part of the Namib-Naukluft Park.
		One of the trees known as the Giant Welwitschia is estimated to be 1500 years old.
	www.800oakwilt.com /specialtrees/welwitschia.html (1876 words)

	GNETALES - Online Information article about GNETALES
		HOOKER, SIR JOSEPH DALTON (1817— English botanist and traveller, second son of the famous botanist Sir W.J.Hooker, was born on the 3oth of June 1817, at Halesworth, Suffolk.
		A complete and functional female flower consists of a single ovule with two integuments, the inner of which is prolonged into a narrow tubular micropyle, like that in the flower of Gnetum.
		The megaspore of Welwitschia is filled with a prothallus-tissue before fertilization, and some of the prothallus-cells function as egg-cells; these grow upwards as long tubes into the apical region of the nucellus, where they come into contact with the pollen-tubes.
	encyclopedia.jrank.org /GEO_GNU/GNETALES.html (3087 words)

	Welwitschia mirabilis \| Welwitschia Plant Namibia-1on1 the information site
		The Welwitschia leaves have up to 22,000 stomata (small pores) per sq cm combined on both upper and lower leaf surface which are used for the exchange of gases in the photosynthesis.
		The Welwitschia is a 'gymnosperm' meaning naked seed and being the name for any vascular plant not having flowers.
		Welwitschia pollen it is unlikely that the desert winds play any roll in the pollination process and that a variety of wasps and other flying insects are responsible for carrying 'the load' from one plant to the other.
	www.welwitschia-mirabilis.com (1291 words)

	Meaning of Mirabilis - ICQ Press Center - ICQ.com
		Annus Mirabilis is the name of a race horse with an impressive record.
		Another type of fish is the Gillichthys mirabilis, otherwise known as the Longjaw Mudsucker.
		Piscina Mirabilis is a great cistern in the aquaduct, the water system of Serino.
	www.icq.com /press/mirabilis.html (1161 words)

	Welwitschia mirabilis - Living Stones Nursery & Plants for the Southwest
		Welwitschia mirabilis is the only member in the family Welwitschiaceae and is one of the more bizarre plants on the planet.
		Welwitschia is the most incredible plant that he encountered.
		In cultivation, Welwitschia mirabilis used to be considered difficult, so they were mostly underwatered to prevent rot and usually died from underwatering.
	www.lithops.net /welwitschia_mirabilis_detail.htm (324 words)

	Torn to Ribbons in the Desert: Science News Online, Oct. 27, 2001 (Site not responding. Last check: 2007-10-14)
		The genus name Welwitschia comes from the explorer of Angola, Friedrich Welwitsch, and taxonomists have institutionalized the astonishment of the Welwitschia discoverers by settling on the species epithet mirabilis.
		Darwin was fascinated when he learned of Welwitschia and its extraordinary mixture of advanced and primitive characteristics and called it "the vegetable Ornithorhynchus," the platypus of the plant world.
		New York, N.Y. In your article on Welwitschia mirabilis, you state that "botanists have classified it with conifers." On the contrary, botanists classify it in the phylum Gnetophyta, along with Gnetum and Ephedra, rather than in the phylum Coniferophyta.
	www.sciencenews.org /articles/20011027/bob12.asp (2845 words)

	Welwitschia Mirabilis Plants in the Namib Desert
		The Welwitschia plant has only two leaves, which, over the course of the years, are frayed by the wind.
		Welwitschias grow exclusively in the central part of the Namib desert, approximately 40 to 120 kilometres from the coast.
		The 'Welwitschia Mirabilis' is probably the most famous plant in Namibia.
	www.southafrica-travel.net /namibia/ewelwit.htm (155 words)

	Welwitschia FAQ
		Hortus 3 claims one species in the genus (W. mirabilis), while Encyclopaedia Brittanica (bastion of knowledge that it is, I would hesitate to call it a tome of taxonomical wisdom) lists two- mirabilis and W. bainesii.
		Welwitschia Flats, where what appear to be hundreds of plants crouch, stretching out to the horizon).
		Date: Wed, 12 Apr 1995 19:07:32 -0700 From: CAdastra@aol.com Subject: Re: Welwitschia A very knowledgeable friend of mine, an excellent grower of many genera in addition to succulents, potted his Welwitschia in a drainage pipe that was in turn potted in a clay pot - a makeshift very deep pot.
	www.alamut.com /subj/property/longevity/welwitschiaFAQ.html (2217 words)

	guul.de - Welwitschia_mirabilis
		Die Welwitschie (Welwitschia mirabilis) ist die einzige Art der Gattung Welwitschia in der Familie der Welwitschiagewächse (Welwitschiaceae).
		Welwitschia mirabilis wird demnach in zwei Unterarten aufgegliedert, die sich in ihrem Areal und in der Morphologie unterscheiden.
		In der Savanne erreicht Welwitschia jedoch Werte von –23,3 ‰ und entspricht eher einer C3-Pflanze.
	www.guul.de /wiki_Welwitschia_mirabilis (2193 words)

	Welwitschiaceae and Welwitschia mirabilis descriptions
		Welwitschia in habitat (Institute of Plant Ecology 1997) [Dieter von Willert].
		Its short, woody, unbranched stem is surmounted by 2 (rarely 3: see photo) strap-shaped leaves that grow from a basal meristem throughout the life of the plant, becoming twisted and frayed with the passing centuries.
		Morphogenesis of the reproductive shoots of Welwitschia mirabilis and Ephedra distachya (Gnetales), and its evolutionary implications.
	www.conifers.org /we/index.htm (1232 words)

	Welwitschia Summary
		Encyclopaedia Brittanica (bastion of knowledge that it is, I would hesitate to call it a tome of taxonomical wisdom) lists two- mirabilis and W. bainesii.
		Gymnosperms can be divided into three groups: the conifers; the cycads and a strange group consisting of four very odd plants which have some features belonging to the Angiosperms and some belonging to the Gymnosperms: Ginkgo, Welwitschia (and 2 others).
		Welwitschia is a gymnosperm with certain traits shared with the angiosperms.
	www.alamut.com /subj/property/longevity/welwitschia.html (249 words)

	BGBM: Greenhouses-House A
		Besides the old and young Welwitschia plants in the display glasshouse, thirteen plants of old stock are growing in the Welwitschia house in the nursery (not open to the public for reasons of limited space).
		The observations suggested that the old Welwitschia stock at Berlin-Dahlem was composed of two groups of plants, provisionally denominated as "group 1" and "group 2".
		mirabilis, the tardily flowering plants with glaucous-green male cones of "group 2" are of Namibian origin and belong to the new subspecies Welwitschia mirabilis subsp.
	www.bgbm.fu-berlin.de /bgbm/garden/bereiche/areas/welwitsh2.htm (389 words)

	Welwitschiaceae and Welwitschia mirabilis descriptions
		Its short, woody, unbranched stem is surmounted by two strap-shaped leaves that grow from a basal meristem throughout the life of the plant, becoming twisted and frayed with the passing centuries.
		The leaves contain numerous subparallel veins that may anastomose or terminate blindly in the mesophyll (this character, again, is unique in Welwitschia among the gymnosperms).
		Field investigations of photosynthetic activity, gas exchange and water potential at different leaf ages in Welwitschia mirabilis during a severe drought.
	www.biologie.uni-hamburg.de /b-online/earle/we/welwitschiaceae.htm (626 words)

	Amazon.com: Welwitschia (Site not responding. Last check: 2007-10-14)
		Welwitschia: Paradox of a parched paradise by Chris H Bornman (Unknown Binding - Jan 1, 1978)
		On Welwitschia, a new genus of Gnetaceae by Joseph Dalton Hooker (Unknown Binding - 1864)
		On the floral mechanism of Welwitschia mirabilis (Hooker) (Roy.
	www.amazon.com /s?ie=UTF8&keywords=Welwitschia&index=blended&page=1 (707 words)

	tourbrief.com - The welwitschia
		The Welwitschia plant, Welwitschia mirabilis, was first observed by Austrian botanist Friedrich Welwitsch in 1860 in the northern Namib Desert in the southern part of Angola.
		The Welwitschia is a national symbol of Namibia, appearing on the national coat of arms.
		Another interesting fact about the Welwitschia is the fact that although it has characteristics of an angiosperm (flowering plant), it also has characteristics of a gymnosperm (pine-bearing plant).
	www.tourbrief.com /index.php?option=com_content&task=view&id=531 (1753 words)

	Plant Glossary: W - EnchantedLearning.com
		Welwitschia mirabilis is an unusual, long-lived, succulent gymnosperm.
		Welwitschia produces either male or female cones (but not both).
		Welwitschia was first discovered by (and is named for) the Austrian botanist Dr. Friedrich Welwitsch in 1859.
	www.enchantedlearning.com /subjects/plants/glossary/indexw.shtml (550 words)

	Directory - Science: Biology: Flora and Fauna: Plantae: Gnetophyta: Welwitschia
		West of Brandberg · cached · A picture profile of the Northern Namib, its flora and fauna including Welwitschia mirablilis and lichens.
		Conservation of Welwitschia mirabilis · cached · Brief description of the plant and challenges of cultivation, with an old botanical plate illustrating the plant's morphology.
		Welwitschia mirabilis · cached · Description of this dioecious perennial plant of southwest Africa, often described as "unlike any known plant on earth."
	www.incywincy.com /default?p=27331 (100 words)

	Welwitschiaceae from the Lower Cretaceous of northeastern Brazil -- Dilcher et al. 92 (8): 1294 -- American Journal of ...
		Hooker J. 1863 On Welwitschia a new genus of Gnetaceae.
		Sykes M. 1910 On the anatomy of Welwitschia mirabilis in its seedling and adult stages.
		Sykes M. 1911 The anatomy and morphology of the leaves and inflorescences of Welwitschia mirabilis.
	www.amjbot.org /cgi/content/full/92/8/1294 (7039 words)

	Science - Biology - Flora and Fauna - Plantae - Gnetophyta - Welwitschia - Newsletter - News - Reviews - Education - ...
		Welwitschia mirabilis {Welwitschiaceae 199700061 L:1301 Q:5 A single species of dioecious perennial with short stem and taproot native to S. Angola and SW African deserts, extending into mopane woodland.
		It is a long-lived plant, deriving moisture from sea-fog dew.
		Botanic Garden at Smith College, Academics Research, Welwitschia It is out of the question the most wonderful plant ever brought to this country, and one of the ugliest.
	www.banner-net.com /Science/Biology/Flora_and_Fauna/Plantae/Gnetophyta/Welwitschia (297 words)

	Welwitschia mirabilis - definition erklärung bedeutung glossar zu Welwitschia mirabilis (Site not responding. Last check: 2007-10-14)
		Da sie in ihrem Inneren Wasser speichern kann, zählt sie zu den Sukkulenten.
		Welwitschia wachsen langsam und erreichen häufig ein Alter von 1000, unter günstigen Umständen bis 2000 Jahren.
		Welwitschia mirabilis wird demnach in zwei Subspecies aufgegliedert, ssp.
	www.adlexikon.de /Welwitschia_mirabilis.shtml (404 words)

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