: any of a genus (Casuarina of the family Casuarinaceae) of dicotyledonous chiefly Australian trees which have whorls of scalelike leaves and jointed stems resembling horsetails and some of which yield a heavy hard wood.
Are Casuarina gymnosperms?
3.1. Casuarina is the most important actinorhizal genus of the tropics and subtropics (Karthikeyan et al., 2013). They are woody, angiosperm evergreen trees with dropping equisetoid twigs..
Is Casuarina a pine?
Despite its name, it is not a pine, but belongs to the Beefwood family. Although its native range runs from Southeast Asia to Australia, it has naturalized in tropical coastal areas throughout the world. It grows to a height of up to 12m, with a spread of 7m, and has a moderate growth rate of about 25cm per year..
What type of plant is a Casuarina?
Although it resembles a pine tree or conifer in appearance, it is actually an angiosperm (flowering plant) and not related to the non-flowering pine family at all. The crown is distinctly conical in young trees, but becomes more irregular with maturity. It has a delicate, wispy appearance..
What type of root is a Casuarina?
Rooting Habit- Casuarina has a spreading, fibrous root system that can penetrate quite deeply into the soil if subsurface moisture is available. A very dense mat of adventitious roots may be formed in response to wet conditions. The root hairs become infected by Frankia spp. and form nitrogen-fixing nodules (18)..
Why is Casuarina angiosperm?
Casuarinas are actually typical angiosperms with simplified and reduced unisexual flowers. They are dioecious or monoecious, the proportion of male, female and monoecious trees varying widely from one site to another..
Description. Plants in the genus Casuarina are dioecious trees (apart from C. equisetifolia that is monoecious), with fissured or scaly greyish-brown to black bark. They have soft, pendulous, green, photosynthetic branchlets, the leaves reduced to scale-like leaves arranged in whorls of 5 to 20 around the branchlets.
Also used as soil-improvers, as roots form nitrogen-fixing associations with soil microbes. Although it resembles a pine tree or conifer in appearance, it is actually an angiosperm (flowering plant) and not related to the non-flowering pine family at all.
An evergreen tree that superficially resembles a conifer due to the production of cone-like fruits and pine-needle-like branchlets; it is not a pine.
Like other Casuarinaceae, C. equisetifolia as a conifer-like appearance which is increased by hanging green branchlets and cone-like fruits. Casuarinas are actually typical angiosperms with simplified and reduced unisexual flowers.
Description
Plants in the genus Casuarina are dioecious trees (apart from C. equisetifolia that is monoecious)
Ecology
Casuarina are attacked by a range of herbivorous insects
Taxonomy
The genus Casuarina was first formally described in 1759 by Carl Linnaeus in Amoenitates Academicae and the first species he described (the type
External links
• "Casuarina L.: Queensland Oak". Atlas of Living Australia
Casuarina trees are salt-tolerant, therefore they can be seen in exposed sand bars, sandy flats, foreshore dunes
Is casuarina a conifer
Species of tree
Casuarina equisetifolia, commonly known as coastal she-oak, horsetail she-oak, ironwood,beach sheoak, beach casuarina or whistling tree is a species of flowering plant in the family Casuarinaceae and is native to Australia, New Guinea, Southeast Asia and India. It is a small to medium-sized, monoecious tree with scaly or furrowed bark on older specimens, drooping branchlets, the leaves reduced to scales in whorls of 7 or 8, the fruit 10–24 mm (0.39–0.94 in) long containing winged seeds (samaras) 6–8 mm (0.24–0.31 in) long. It has been called ironwood, horsetair tree, beach sheoak, and Australian pine, though it is not pine despite some of its conifer like features.
Casuarina junghuhniana
Species of flowering plant
Casuarina junghuhniana, the mountain ru or red-tipped ru, is a tree in the family Casuarinaceae that originated in Java and Lesser Sunda Islands. The species has been introduced to Pakistan and Bangladesh.
