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Acacia Aphylla
''Acacia aphylla'', commonly known as the leafless rock wattle, twisted desert wattle or live wire, is a species of '' Acacia'' which is endemic to an area around Perth in Western Australia Description ''A. aphylla'' is spiny and leafless erect and widely branching shrub that grows to in height and with a width of approximately . The generally bright green branchlets are rigid, terete and obscurely ribbed. They are smooth, glaucous, glabrous and coarsely pungent. Unlike most ''Acacia'' the phyllodes are absent for ''A. aphylla'. The thickened blue-green wiry stems have the ability to photosynthesize like leaves so giving the plant an evolutionary adaptation that greatly reduces the total surface area for water loss through transpiration. ''A. aphylla'' produces yellow spherical flowers between August and October (late winter to mid spring) in its native range. The inflorescences have a simple structure with one per axil. The peduncles are long and glabrous with globular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Maslin
Bruce Roger Maslin (born 3 May 1946) is an Australian botanist, known for his work on ''Acacia'' taxonomy. Born in Bridgetown, Western Australia, he obtained an honours degree in botany from the University of Western Australia in 1967, then took up an appointment as a botanist with the Western Australian Herbarium. The following year he was conscripted to serve in the Vietnam War; he gave three years in National Service, serving in Vietnam in 1969. In 1970 he returned to his position at the Western Australian Herbarium, serving in that institution until 1987. During this time he was Australian Botanical Liaison Officer in 1977 and 1978; editor of ''Nuytsia ''Nuytsia floribunda'' is a hemiparasitic tree found in Western Australia. The species is known locally as moodjar and, more recently, the Christmas tree or Western Australian Christmas tree. The display of intensely bright flowers during the ...'' from 1981 to 1983; and acting curator in 1986 and 1987. In 1987, Maslin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sepal
A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined by Noël Martin Joseph de Necker in 1790, and derived . Collectively the sepals are called the calyx (plural calyces), the outermost whorl of parts that form a flower. The word ''calyx'' was adopted from the Latin ,Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 not to be confused with 'cup, goblet'. ''Calyx'' is derived from Greek 'bud, calyx, husk, wrapping' ( Sanskrit 'bud'), while is derived from Greek 'cup, goblet', and the words have been used interchangeably in botanical Latin. After flowering, most plants have no more use for the calyx which withers or becomes vestigial. Some plants retain a thorny calyx, either dried or live, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanist
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (''botanē'') meaning "pasture", " herbs" "grass", or " fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – edible, med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point. In temperate climates, it most commonly appears on surfaces near the ground as fragile white crystals; in cold climates, it occurs in a greater variety of forms. The propagation of crystal formation occurs by the process of nucleation. The ice crystals of frost form as the result of fractal process development. The depth of frost crystals varies depending on the amount of time they have been accumulating, and the concentration of the water vapor (humidity). Frost crystals may be invisible (black), clear (translucent), or white; if a mass of frost crystals scatters light in all directions, the coating of frost appears white. Types of frost include crystalline frost (hoar fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drought
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, and O. Zolina, 2021Water Cycle Changes In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1055–1210, doi:10.1017/9781009157896.010. This means that a drought is "a moisture deficit relative to the average water availability at a given location and season". A drought can last for days, months or years. Drought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthorrhoea Preissii
''Xanthorrhoea preissii'', known as balga, is a widespread species of perennial monocot in Southwest Australia. Description The form of the plant resembles a tree, with very long and bunched, grass-like, leaves that emerge from a central base. The trunk may grow over 3 metres tall, and the often blackened appearance is evidence of its ability to withstand fire. The remains of the flammable leaves and the annual regrowth produce banding, allowing the age of the plant to be determined, and giving a record of previous fires in its habitat. The inflorescence appears on an upright spike, 1.5 m to 2.5 m long, between June and December. The sessile flowers, creamy or white, appear more profusely when stimulated by bushfire. Taxonomy The name 'balga' is derived from the Nyungar language. This species and other members of the genus ''Xanthorrhoea'' are informally termed blackboys or grasstrees. The appearance of the plant was seen as resembling a native inhabitant holding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hakea Petiolaris
''Hakea petiolaris'', commonly known as the sea-urchin hakea, is a shrub or small tree with cream-coloured and pink or purple flowers and woody fruit. It is endemic to the south west of Australia, occurring at the coastal plain, jarrah forest and wheatbelt regions, often at the ancient granite outcrops of Western Australia. Description ''Hakea petiolaris'' grows as an erect shrub or tree up to in height. The leaves have a distinctive pale-grey colour and are long and wide. The flowers are arranged in groups that appear on small branches or in the forks of branches. The groups are roughly spherical and contain 120 to 200 individual flowers. Each flower is long and white or cream in colour with the perianth, (the non-reproductive part of the flower) ranging in colour from pink to purple. Flowering is followed by woody seed capsules which are long and wide. Each capsule splits into valves and releases 2 dark brown or black winged seeds. Taxonomy ''Hakea petiolaris'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grevillea Endlicheriana
''Grevillea endlicheriana'', commonly known as spindly grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with linear leaves, and groups of white, pink tinged flowers. Description ''Grevillea endlicheriana'' is an erect shrub that typically grows to a height of . Its leaves are usually linear, long and wide. Both surfaces of the leaves are covered with silky hairs. The flowers are arranged on flowering branches on a rachis long and are white with a pink tinge to pale pink, the pistil long. Flowering occurs from July to November and the fruit is an elliptic to more or less spherical follicle long. Taxonomy ''Grevillea endlicheriana'' was first formally described in 1845 by Carl Meissner in ''Plantae Preissianae'', based on plant material collected from the Darling Scarp in 1839. The specific epithet (''endlicheriana'') honours Stephan Endlicher. Distribution and habitat Spindly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Loxophleba
''Eucalyptus loxophleba'', commonly known as York gum, daarwet, goatta, twotta or yandee, is a species of tree or mallee that is endemic to Western Australia. It has rough bark on the trunk, smooth olive to brownish bark above, lance-shaped adult leaves, flowers buds in groups of between seven and eleven, white flowers and conical fruit. Description ''Eucalyptus loxophleba'' is a mallee or a tree that typically grows to a height of and forms a lignotuber. The trunk has a diameter of about of and varying amounts, depending on subspecies, of rough fibrous-flaky or smooth bark on the trunk and smooth grey-brown over copper bark above. Young plants and coppice regrowth have more or less triangular, egg-shaped or almost round glaucous leaves that are long and wide. Adult leaves are lance-shaped to curved, the same glossy, dark green on both sides, long and wide tapering to a petiole long. The flower buds are arranged in leaf axils in groups of seven, nine or eleven on an unbra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Calophylla
''Corymbia calophylla'', commonly known as marri, is a species of flowering plant in the family Myrtaceae and is endemic to the southwest of Western Australia. It is a tree or mallee with rough bark on part or all of the trunk, lance-shaped adult leaves, branched clusters of cup-shaped or pear-shaped flower buds, each branch with three or seven buds, white to pink flowers, and relatively large oval to urn-shaped fruit, colloquially known as ''honky nuts''. Marri wood has had many uses, both for Aboriginal people, and in the construction industry. Description ''Corymbia calophylla'' is a large tree, or a mallee in poor soil, and that typically grows to a height of , but can reach over . The largest known individual ''C. calophylla'' is tall, has a girth and a wood volume of . The trunk of the tree may become up to wide, the branches becoming large, thick and rambling. It has rough, tessellated, grey-brown to red-brown bark that extends over the length of the trunk and branc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
