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Tomentose leaves and flowers. Cotyledon tomentosa is a perennial evergreen shrub, which is a member of the Crassulaceae family of succulent flowering plants. [7] C. tomentosa has red, orange, or yellow bell-shaped flowers between July and September, [12] [7] and there are two recognized subspecies, subsp. tomentosa and subsp. ladismithiensis.
Together with Tylecodon, Kalanchoe and Adromischus, it forms a sister clade to the family's basal Crassula clade. [1] Until the 1960s, some 150 species were included in the genus Cotyledon, [4] but subsequently it was split into at least Adromischus, Dudleya, Rosularia, and Tylecodon, leaving probably less than two dozen species in Cotyledon. [5]
Notable early examples of live plant harbored pests—such as beech scale, chestnut blight, and white pine blister rust—led to the Plant Quarantine Act of 1912 and regulations from the US Department of Agriculture in 1919. Despite these and subsequent regulations, insects and pathogens have continued to be introduced through live plants. [1]
The Crassulaceae (/ ˈ k r æ s j uː l eɪ s iː ˌ iː,-s i ˌ aɪ /, from Latin crassus, thick), also known as the crassulas, the stonecrops or the orpine family, are a diverse family of dicotyledon angiosperms primarily characterized by succulent leaves and a form of photosynthesis known as crassulacean acid metabolism (CAM), in which plants photosynthesize in the daytime and exchange ...
In a pest risk analysis initiated by a specific pathway, often an imported commodity or goods associated with an imported commodity, e.g. packing materials, the probability of pest entry is evaluated for that specific pathway. For a pest risk analysis initiated for a specific pest, all probable pathways are evaluated for that individual pest.
Fungal diseases; Armillaria root rot. Shoestring root rot Armillaria mellea Rhizomorpha subcorticalis [anamorph] Botryosphaeria dieback Botryosphaeria dothidea Fusicoccum aesculi [anamorph] Botrytis leaf and petal blight Botrytis cinerea Botryotinia fuckeliana [teleomorph] Bud and twig blight Pycnostysanus azaleae = Briosia azaleae. Cercospora ...
Carya tomentosa, commonly known as mockernut hickory, mockernut, white hickory, whiteheart hickory, hognut, bullnut, is a species of tree in the walnut family Juglandaceae. The most abundant of the hickories , and common in the eastern half of the United States, it is long lived, sometimes reaching the age of 500 years.
Common Names of Diseases, The American Phytopathological Society Brunt A.A. (2005), Virus and Virus-like Diseases of Bulb and Flower Crops , John Wiley & Sons, New York 10158-0012, USA. Pp. 105–110.