Johnson's Grass Tree | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Asphodelaceae |
Subfamily: | Xanthorrhoeoideae |
Genus: | Xanthorrhoea |
Species: | X. johnsonii |
Binomial name | |
Xanthorrhoea johnsonii | |
Xanthorrhoea johnsonii (also known as Johnson's Grass Tree) is a large plant in the genus Xanthorrhoea found in eastern Australia. [1] The trunk can grow to 5 metres tall. Older foliage is very strong, hence one of the common names being "steel grass", and is commonly used in floral design where it can be bent and looped without breaking. [2]
It was named after the Australian botanist L.A.S. Johnson.
Xanthorrhoea is a genus of about 30 species of flowering plants endemic to Australia. Species are known by the name grass tree.
Kingia is a genus consisting of a single species, Kingia australis, and belongs to the plant family Dasypogonaceae. It has a thick pseudo-trunk consisting of accumulated leaf-bases, with a cluster of long, slender leaves on top. The trunk is usually unbranched, but can branch if the growing tip is damaged. Flowers occur in egg-shaped clusters on the ends of up to 100 long curved stems. Kingia grows extremely slowly, the trunk increasing in height by about 1½ centimetres per year. It can live for centuries, however, so can attain a substantial height; 400-year-old plants with a height of six metres are not unusual.
Grass tree, grass-tree or grasstree may refer to several plant species, including:
Xanthorrhoea australis, the grass tree, southern grasstree or austral grasstree, 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.
Stylidium austrocapense is a dicotyledonous plant that belongs to the genus Stylidium. The specific epithet austrocapense refers to this species' native range on the southern part of Cape York Peninsula in Australia. It is an herbaceous annual plant that grows from 9 to 18 cm tall. Oblanceolate or elliptical leaves, about 4-40 per plant, form a basal rosette with stems absent. The leaves are generally 7.5–31 mm long and 2–10 mm wide. This species produces 1-10 scapes per plant that are glandular-hairy. Inflorescences are 9–18 cm long and produce pink or red flowers that bloom from April to July in their native range. S. austrocapense is endemic to the Cape York Peninsula in Queensland, Australia. Its typical habitat has been reported as coarse white sandy soils on low hills or intermittent watercourses. Dominant vegetation in association with its habitat include Eucalyptus tetrodonta, E. clarksoniana, Melaleuca viridiflora, M. nervosa, and Xanthorrhoea johnsonii. S. austrocapense is most closely related to S. multiscapum, but differs by the shorter leaves and absent paracorolla. Its conservation status has been assessed as secure.
Halophila johnsonii, or Johnson's seagrass, is a small, asexual seagrass in the family Hydrocharitaceae. It occurs only on the southeastern coast of Florida, and was the first marine plant listed on the United States endangered species list, where it is listed as a threatened species. Female flowers have been observed, but even with decade long observational studies, neither male flowers nor seed have ever been observed.
The flora of Australia comprises a vast assemblage of plant species estimated to over 20,000 vascular and 14,000 non-vascular plants, 250,000 species of fungi and over 3,000 lichens. The flora has strong affinities with the flora of Gondwana, and below the family level has a highly endemic angiosperm flora whose diversity was shaped by the effects of continental drift and climate change since the Cretaceous. Prominent features of the Australian flora are adaptations to aridity and fire which include scleromorphy and serotiny. These adaptations are common in species from the large and well-known families Proteaceae (Banksia), Myrtaceae, and Fabaceae.
The Donnelly River is a river in the South West of Western Australia. Its main tributaries are Barlee Brook and Carey Brook. The river runs primarily through state forest reserves, although 25 private landholdings are situated along the length of the river. Clearing of the catchment area is estimated at 20% with the land mostly being used for viticulture, horticulture, dairy, grazing and tourism.
Xanthorrhoea preissii, known as balga, is a widespread species of perennial monocot in Southwest Australia.
Grevillea johnsonii is a shrub species which is endemic to New South Wales in Australia.
Xanthorrhoea macronema is a forest plant in the genus Xanthorrhoea, found in coastal regions of eastern Australia north of Sydney, New South Wales to Fraser Island, Queensland. The trunk of this grass tree is underground.
Xanthorrhoea glauca, known as the grass tree, is a large plant in the genus Xanthorrhoea, widespread in eastern Australia. The trunk can grow in excess of 5 metres tall, and may be many branched. It is occasionally seen in large communities in nutrient rich soils. The leaves are a grey or bluish glaucous green.
Xanthorrhoea malacophylla is a species of grasstree of the genus Xanthorrhoea. It is endemic to New South Wales, Australia. Mature plants form a single or branched trunk that ranges between 2 and 6 metres in height. The grass-like leaves, which are usually around 3 mm wide, are distinguished from other species by their softness and sponginess. The flowers appear between May and September in scapes that are between 1.3 and 1.8 metres long.
Xanthorrhoea semiplana is a species of grass tree found in south-eastern Australia. It has two subspecies:
Micromyrtus grandis, the Severn River heath-myrtle, is a shrub in the myrtle family. It is found exclusively in the Severn River Nature Preserve and a property next to it, located around 60 km north-west of Glen Innes (Australia). It grows up to 1–4 metres tall, making it the largest plant in the genus Micromyrtus. The Severn River heath-myrtle is characterized by its fruit, which is 5-ribbed, and its broader leaves when compared to other nearby flora.
Xanthorrhoea brunonis is a species of grasstree of the genus Xanthorrhoea native to Western Australia.
Xanthorrhoea gracilis, commonly known as the graceful grasstree, grassboy or mimidi, is a species of grasstree of the genus Xanthorrhoea native to Western Australia.
Xanthorrhoea thorntonii, commonly known as Cundeelee grasstree, Cundeelee blackboy, desert grasstree, yacka or grasstree, is a species of grasstree of the genus Xanthorrhoea native to central Australia. It is known to the Pitjantjatjara people as kata-kultu, kata-puru, ulpa or urara, the Warlpiri people as yurlurnkuru and the Arrernte as lunkere. X. thorntonii is the only grass tree found in Central Australia including the Great Sandy Desert, Great Victoria Desert and MacDonnell Ranges.
Xanthorrhoea latifolia is a species of grasstree of the genus Xanthorrhoea native to New South Wales and Queensland.
Elaeocarpus johnsonii, commonly known as Kuranda quandong or Johnson's quandong, is species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a small to medium-sized tree, often with several main stems, elliptic to egg-shaped leaves with the narrower end towards the base, racemes of up to seven flowers, the petals with fringed lobes, and dark blue fruit.