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Quassia (genus) amara (species) is an attractive small evergreen shrub or tree from the tropics and belongs to the family Simaroubaceae. [4] [5] [6] Q. amara was named after Graman Quassi, a healer and botanist who showed Europeans the plant's fever treating uses.
Calluna vulgaris, common heather, ling, or simply heather, [1] is the sole species in the genus Calluna in the flowering plant family Ericaceae.It is a low-growing evergreen shrub growing to 20 to 50 centimetres (8 to 20 in) tall, or rarely to 1 metre (40 in) and taller, [2] and is found widely in Europe and Asia Minor on acidic soils in open sunny situations and in moderate shade.
Cultivar "Silver Ghost" is a taller, silver plant, which flowers much later (August–September) than typical absinthium (June–July) in Britain, so holds its silver appearance for longer. This and a more feathery-leaved cultivar "Persian Lace" were selected by National Collection Holder John Twibell in the 1990s.
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Many trees do not reach this mature height because of hostile, less than ideal growing conditions, and resemble shrub-sized plants. Others in such species have the potential to grow taller in ideal conditions. For longevity, most shrubs are classified between perennials and trees. Some only last about five years in good conditions.
Osmanthus range in size from shrubs to medium-sized trees, 2–12 m (7–39 ft) tall. The leaves are opposite, evergreen , and simple, with an entire, serrated or coarsely toothed margin. The flowers are produced in spring, summer or autumn, each flower being about 1 cm long, white, with a four-lobed tubular-based corolla ('petals').
Sorrel (Rumex acetosa), also called common sorrel or garden sorrel, is a perennial herbaceous plant in the family Polygonaceae.Other names for sorrel include spinach dock and narrow-leaved dock ("dock" being a common name for the genus Rumex).