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The typical shrubby growth of Bulbine frutescens (yellow-flowered form). This variable species grows as a small shrub, with short, low stems that produce roots down towards the ground, and slender, erect, succulent, grey-green leaves. The flowers appear throughout the summer, on a 30 cm erect inflorescence. The flowers can be orange, yellow or ...
Bulbine is a genus of plants in the family Asphodelaceae and subfamily Asphodeloideae, [3] named for the bulb-shaped tuber of many species. [4] It was formerly placed in the Liliaceae . [ 5 ] It is found chiefly in Southern Africa , with a few species extending into tropical Africa and a few others in Australia and Yemen .
The complete picture of long-term ecological effects from invasive pests is difficult to measure; and it is too early to determine the effects of the many new invasive pest introductions. Much of the research has focused of the biology of the pests—i.e. life cycle and host preferences—towards understanding how to contain their spread. [10]
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.
Bacterial diseases; Bacterial spot Xanthomonas campestris pv. vesicatoria: Bacterial wilt Ralstonia solnacearum: Bacterial canker Clavibacter michiganensis subsp. michiganensis: Syringae seedling blight and leaf spot Pseudomonas syringae. P. syringae pv. syringae. Crown Gall Agrobacterium tumefaciens
Bulbine bulbosa is a perennial herb that grows in tufts 27–75 cm (11–30 in) high with thick, fleshy roots and usually a bulb-like tuber.There are between three and seven leaves, channelled to more or less cylindrical, tapering and hollow, up to 30 cm (12 in) long and 1–5 mm (0.039–0.197 in) wide.
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For the sugarcane crop to be infected by the disease, large spore concentrations are needed. The fungus includes a structure known as a 'smut-whip', a curved black structure which emerges from the leaf whorl, which helps to spread the disease to the other plants, usually over a period of about three months.