By Mark F. Large, John E. Braggins
Tree ferns within the panorama command the eye of either dedicated gardeners and informal passersby. Their stately shape resembles that of the palm tree and conjures up a sense of the quintessentially unique. This quantity is the resource for info at the dwelling tree ferns. It surveys households, genera, and species, together with these compatible for the house backyard. It bargains updated taxonomy and specific descriptions in addition to in-depth insurance of every little thing from tree fern use to conservation. In acceptance of the horticultural value of tree ferns, the authors offer broad cultivation info, together with propagation, and illnesses and pests.
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Extra info for Tree Ferns
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The passionvine hopper (Scolypopa australis) is one such pest, suspected of carrying a serious pathogen (a phytoplasma), causing dieback in a number of plants. It has been suggested that the plants affected include Cyathea medullaris in New Zealand (Plate 73). Unusual tree fern dieback has been recorded in both New Zealand and Australia, but proof that a phytoplasma is responsible is very difficult to obtain. Whatever the causal organism, these associated diseases are very difficult to control and perhaps impossible to cure, so insect control remains a priority and perhaps the easiest healthcare step.
The largest of these is Dicksonia with some 20–25 species. Dicksonia is an ancient group with a current distribution ranging from St. Helena in the Atlantic to the Americas, the Juan Fernández Islands, other Pacific Islands, Australia, New Zealand, and Malesia. Again, because of the diversity within this genus (particularly in New Guinea), the exact number of species is unknown. Calochlaena has 5 recognized species, ranging from Malesia, eastern Australia, to Tasmania and the Pacific. Cibotium has perhaps 10–12 in America, Asia, Malesia, and principally Hawaii.
J. Hooker) J. Smith, found in Asia, the only member of the genus, and several species with trunks 1 m high or more commonly placed in the genus Blechnum but perhaps more appropriately split into several genera. These include B. buchtienii Rosenstock, B. cycadifolia (Colla) Sturm (Plate 3), and B. magellanica (Desvaux) Mettenius (Plates 7, 8), all Lomariocycas. Blechnum discolor (G. Forster) Keyserl (Plates 4, 5) and B. nudum (Labillardière) Mettenius ex Luerssen (= Lomaria nuda (Labillardière) Willdenow) are smaller plants with relatively short trunks.