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Phyllachne colensoi is a perennial cushion mound-forming plant with short erect stems that are densely packed. Leaves are sessile and small at only 2–3 mm long. Solitary flowers are white and held close to the cushion mound, with flowers and fruits being produced from December to March. [3]
The compact growth form of cushion plants reduces air flow over the surface of the epidermis, reducing the rate of water loss. Additionally, many cushion plants have small and fleshy leaves which reduce the surface area of the plant, which reduces transpiration and conserves water. In alpine environments well above the tree line, cold is a ...
Phlox family (Polemoniaceae) perennials include dwarf phlox, or cushion phlox (Phlox condensata), which forms dense cushions plant with tiny branchlets only 1 inch (0.025 m) long, tiny leaves only 0.2 inches (0.0051 m) long and well adapted to resist the high winds, and flowers forming a nearly solid floral blanket of the underlying plant.
Tasmanian cushion plants are low growing, highly compact, woody, spreading mats that can grow up to 3 m in diameter, located mainly on the island of Tasmania. These mats are made up of tightly packed stems that grow at the same rate so that no apical rosettes protrude above the rest.
Plants of O. muscosa have been called "casepitose hemicryptophytes", [10] and may be found growing on or with cushion plants [11] such as Distichia or Pycnophyllum [3] or Plantago rigida. [10] This species is often found in habitats with deep peat soils [12] and is one of several diagnostic or indicator species of upper humid superpáramo ...
Cold-treated or wild and winter-collected seed will germinate indoors. The seed and leaves are high in lipids. It is a small cushion-forming evergreen perennial shrub, up to 15 centimetres (6 in) in height, and can trap heat in the dome. [5] It has oval blunt leathery toothless leaves, up to 1 cm (0.4 in) long, which are arranged in dense rosettes.
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The Ewartia genus is described as cushion plants/herbs due to the characteristic growth habits of low growing, highly compact mats which are made up of highly packed stems. [ 3 ] [ 4 ] These mats are slow-growing and are often located in soils that contain low nutrients.