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The seedlings of some flowering plants have no cotyledons at all. These are said to be acotyledons. The plumule is the part of a seed embryo that develops into the shoot bearing the first true leaves of a plant. In most seeds, for example the sunflower, the plumule is a small conical structure without any leaf structure. Growth of the plumule ...
One example of primary succession takes place after a volcano has erupted. The lava flows into the ocean and hardens into new land. The resulting barren land is first colonized by pioneer organisms, like algae, which pave the way for later, less hardy plants, such as hardwood trees, by facilitating pedogenesis, especially through the biotic acceleration of weathering and the addition of ...
Zoysia matrella (L.) Merr., commonly known as Manila grass, is a species of mat-forming, perennial grass native to temperate coastal southeastern Asia and northern Australasia, from southern Japan (Ryukyu Islands), Taiwan, and southern China (Guangdong, Hainan) south through Thailand, Indonesia, Malaysia and the Philippines to northern Australia (northeast Queensland), and west to the Cocos ...
Some lichens grow on rocks without soil, so may be among the first of life forms, and break down the rocks into soil for plants. [11] Since some uninhabited land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing nitrogen-fixing bacteria, and leaves that employ transpiration.
Tunstall Hills is an area of open space in Sunderland, Tyne and Wear, England.It is a Local Nature Reserve [1] [2] and Tunstall Hills And Ryhope Cutting has been designated a Site of Special Scientific Interest both for its geological and biological importance.
The Japanese rock garden, or dry garden, often referred to as a "Zen garden", is a special kind of rock garden with a few large rocks, and gravel over most of the surface, often raked in patterns, and no or very few plants. Other Chinese and Japanese gardens use rocks, singly or in groups, with more plants, and often set in grass, or next to ...
Dendrobium speciosum Sm. var. speciosum [17] – commonly known as the Sydney rock orchid or rock lily which is a lithophyte with between 30 and 100 crowded cream-coloured or dull yellow flowers between August and October and occurs between Bulahdelah and near the Victorian border and as far inland as Mudgee.
Xanthorrhoea (/ z æ n θ oʊ ˈ r iː ə / [2]) is a genus of about 30 species of succulent flowering plants in the family Asphodelaceae.They are endemic to Australia. Common names for the plants include grasstree, grass gum-tree (for resin-yielding species), kangaroo tail, balga (Western Australia), yakka (South Australia), yamina (), and black boy (or "blackboy").