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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").
Xanthorrhoea australis, the grass tree or austral grasstree, [1] is an Australian plant. It is the most commonly seen species of the genus Xanthorrhoea. Its trunk can grow up to several metres tall and is often branched. In certain Aboriginal languages, it is called bukkup, baggup or kawee. [1]
Stilt roots – From upright (erect) trunks, some hard, thick, almost straight roots come-out obliquely and penetrate the ground. Thus they act like a camera-tripod. They increase balance and support as well as, when these roots penetrates the ground, they increase soil grip. Root-Buttress or Plank Buttress or Buttress-Root – Climbing roots –
This layer contains mostly non-woody vegetation, or ground cover, growing in the forest with heights of up to about one and a half metres. The herb layer consists of various herbaceous plants ( therophytes , geophytes , cryptophytes , hemicryptophytes ), dwarf shrubs ( chamaephytes ) as well as young shrubs or tree seedlings .
Vegetation is an assemblage of plant species and the ground cover they provide. [2] It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characteristics. It is broader than the term flora which refers to species composition.
It has relatively deep roots and propagates relatively rapidly horizontally from its root system but grows to only 2–5 inches (5–13 cm) in above-ground height, basically eliminating the need for mowing lawns that use it. It cannot be reproduced by seed and thus depends on sod plugs or sprigging for its production. [13]
The roots of a tree serve to anchor it to the ground and gather water and nutrients to transfer to all parts of the tree. They are also used for reproduction, defence, survival, energy storage and many other purposes. The radicle or embryonic root is the first part of a seedling to emerge from the seed during the process of germination.
A root ball [1] is the mass of roots and growing media at the base of a plant such as trees, shrubs, and other perennials and annual plants. [2] The appearance and structure of the root ball will be largely dependent on the method of growing used in the production of the plant.