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Loran M. Whitelock (April 21, 1930 - May 27, 2014) was an American botanist who specialized in Cycads, a prehistoric plant that once dominated the planet and is now somewhat rare and endangered. [1] He was known as a plant collector, plant curator, nursery owner, author, and conservationist.
Unambiguous fossils of cycads are known from the Early-Middle Permian onwards. [26] Cycads were generally uncommon during the Permian. [27] The two living cycad families are thought to have split from each other sometime between the Jurassic [17] and Carboniferous. [28] Cycads are thought to have reached their apex of diversity during the ...
While there are more than 200 species of cycads, only one is native to Florida, and only a couple are popular landscaping plants in our area.
Cycads all over the world are in decline, with four species on the brink of extinction and seven species have fewer than 100 plants left in the wild. [2] 23,420 species of vascular plant have been recorded in South Africa, making it the sixth most species-rich country in the world and the most species-rich country on the African continent.
Encephalartos laevifolius is a species of cycad that is found in the KwaZulu-Natal, Mpumalanga and Limpopo provinces of South Africa, [2] and at Piggs Peak in Eswatini. The species is facing extinction in the wild, but is widely cultivated. As of 2012, the Encephalartos laevifolius has been listed as critically endangered by the IUCN. [3]
Encephalartos woodii, Wood's cycad, is a rare cycad in the genus Encephalartos, and is endemic to the oNgoye Forest of KwaZulu-Natal, South Africa. It is one of the rarest plants in the world, being extinct in the wild with all specimens being clones of the type . [ 2 ]
Landscape mode (for landscape photos with the background in focus) Exif version: 2.21: Date and time of digitizing: 15:27, 6 October 2012: Meaning of each component: Y; Cb; Cr; does not exist; Image compression mode: 4: Exposure bias: 0: Maximum land aperture: 3.44 APEX (f/3.29) Metering mode: Pattern: Light source: Unknown: Flash: Flash did ...