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Chamaegigas
''Chamaegigas'' is a genus which contains only one species, ''Chamaegigas intrepidus'', an aquatic plant that is native to central-west Namibia, growing in semi-arid and savanna regions. It grows in shallow temporary pools on granite inselbergs, surviving regular environmental extremes that include drastic daily changes in temperature and pH, along with extreme fluctuations in wetting and drying. ''Chamaegigas intrepidus'' means "intrepid dwarf giant", referring to the tiny plant's ability to thrive even in the desert.
==Description==
''Chamaegigas intrepidus'' grows in intertwined mats, with two different leaves. One is an underwater awl-shaped leaf that is long. Two pairs of unequal length leaves float on the water, and oval-shaped. The plant grows from a small rhizome growing in a combination of sand, organic debris, leaf remains, and animal dung that is deep. The flowers have two lips, and are white or pale pink with purple speckles.〔
''Chamaegigas intrepidus'' is one of approximately 330 desiccant-tolerant vascular plants, 90% of which are found growing on inselbergs. It is one of the rare desiccant-tolerant vascular plants that is not a fern or monocotyledon. The basal leaves can survive complete drying for 4.5 months, with more than 50% of them reviving after receiving moisture—so the plants simply resume growing once the pools fill again after a dry spell. New floating leaves, which do not survive drying as well as the basal leaves, can reach the water surface as soon as 2-4 days after the pool refills, with flowers appearing as early as 4 days after breaking dormancy.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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