Aizoon secundum, the onesided galenia, is a species of flowering plant native to southern Africa, including Botswana, Namibia, and South Africa (Cape Provinces, Free State, and Northern Provinces). It is naturalized in Australia (Western Australia, Victoria, Tasmania and New South Wales), Spain, and the United States (Florida and New Jersey).Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2). Galenia secundaPrescott, A. & J. Venning. 1984. Aizoaceae. Flora of Australia 19–62Flora of North America, vol 4 p 79, Galenia secundaAdamson, R. S. 1956. The South African species of Aizoaceae III. Galenia L. J. S. Afr. Bot. 22: 87-127.Prescott, A. 1984. Galenia. In: R. Robertson et al., eds. Flora of Australia. 23+ vols. Canberra. Vol. 4, pp. 50-52. In Spain and Australia, is considered an invasive weed threatening native vegetation.Weeds in Australia, Australian Government
Aizoon secundum is shrub or perennial herb with grayish-white stems that trail along the ground for as much as 60 cm, forming mats. Leaves are grayish-white, folded inward, up to 2.5 cm long. Flowers are small, white to yellowish, up to 2 mm in diameter, often hidden by the leaves. Sonder, Otto Wilhelm in Harvey, William Henry. 1862. Flora capensis :being a systematic description of the plants of the Cape colony, Caffraria, & Port Natal (and neighbouring territories) 2: 474..Clewell, A. F. 1985. Guide to the Vascular Plants of the Florida Panhandle
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