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Phyllode
Phyllodes are modified petioles or leaf stems, which are leaf-like in appearance and function. In some plants, these become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode comes to serve the purpose of the leaf. Some important examples are '' Euphorbia royleana'' which are cylindrical and '' Opuntia'' which are flattened. They are common in the genus ''Acacia'', especially the Australian species, at one time put in ''Acacia'' subg. ''Phyllodineae''. Sometimes, especially on younger plants, partially formed phyllodes bearing reduced leaves can be seen. The illustration (to the right) of '' Acacia suaveolens'' from '' Novae Hollandiae plantarum specimen'' shows the juvenile true leaves, together with the developing phyllodes, and the phyllodes of the mature plant. The genus, '' Daviesia'', in the family Fabaceae, is characterised in part by the plants having phyllodes. File:Acacia suaveolens 9064505997 9f14f5f117 o.jpg, '' A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (botany)
In botany, the petiole () is the stalk that attaches the leaf blade to the stem, and is able to twist the leaf to face the sun. This gives a characteristic foliage arrangement to the plant. Outgrowths appearing on each side of the petiole in some species are called stipules. Leaves with a petiole are said to be petiolate, while leaves lacking a petiole are called sessile or apetiolate. Description The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves, the leaf stalk may be long, as in the leaves of celery and rhubarb, or short. When completely absent, the blade attaches directly to the stem and is said to be sessile. Subpetiolate leaves have an extremely short petiole, and may appear sessile. The broomrape family Orobanchaceae is an example of a family in which the leaves are always sessile. In some other plant groups, such as the speedwell genus '' Veronica'', petiolate and sessile leaves may occur in different species. In the grasses ( Poaceae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euphorbia Royleana
''Euphorbia royleana'' is a species of flowering plant in the family Euphorbiaceae. It is also known as Sullu spurge, and Royle's spurge. It is a succulent and almost cactus like in appearance although unrelated. It grows right across the Himalaya mountains from Pakistan, India, Bhutan, Myanmar, Nepal to western China, It prefers dry and rocky slopes between 1000 and 1500 meters, but has been found up to 2000 meters. Flowering and fruiting is in spring to early summer (March–July) and seeding is in June–October. It is used as a hedging plant in northern India and has medicinal uses. Description ''Euphorbia royleana'' is a deciduous, cactus-like, shrub or small upright trees up to 2-5(-7) m high, which is armed with short prickles along its stems. It has a stout trunk and is glabrous except for the flowers (cyathia). The cyathia are small greenish-yellow, 3-4 appear in almost stalkless clusters in leaf axils .LLIFLE - Encyclopedia of living forms "Euphorbia royleana" Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opuntia
''Opuntia'', commonly called prickly pear or pear cactus, is a genus of flowering plants in the cactus family Cactaceae. Prickly pears are also known as ''tuna'' (fruit), ''sabra'', '' nopal'' (paddle, plural ''nopales'') from the Nahuatl word for the pads, or nostle, from the Nahuatl word for the fruit; or paddle cactus. The genus is named for the Ancient Greek city of Opus, where, according to Theophrastus, an edible plant grew and could be propagated by rooting its leaves. The most common culinary species is the Indian fig opuntia (''O. ficus-indica''). Description ''O. ficus-indica'' is a large, trunk-forming, segmented cactus that may grow to with a crown of over in diameter and a trunk diameter of . Cladodes (large pads) are green to blue-green, bearing few spines up to or may be spineless. Prickly pears typically grow with flat, rounded cladodes (also called platyclades) containing large, smooth, fixed spines and small, hairlike prickles called glochids th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Suaveolens 155867
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of '' Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Suaveolens
''Acacia suaveolens'' (sweet wattle) is a shrub species endemic to Australia. It grows to between 0.3 and 3.5 metres high and has smooth purplish-brown or light green bark and has straight or slightly curving blue-green phyllodes The pale yellow to near white globular flower heads generally appear between April and September in its native range. These are followed by flattened, bluish oblong pods which are up to 2 to 5 cm long and 8 to 19 mm wide. The species was first formally described by English botanist James Edward Smith in 1791 in ''Transactions of the Linnean Society of London'' He described it with reference to a cultivated plant at Syon House which had been raised by Thomas Hoy from seed that originated from New South Wales. The species was transferred into the genus '' Acacia'' by Carl Ludwig Willdenow in 1806. The species occurs naturally on sandy soils in heathland and dry sclerophyll forest in South Australia and Victoria, Tasmania, New South Wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Novae Hollandiae Plantarum Specimen
''Novae Hollandiae Plantarum Specimen'' is a two-volume work describing the flora of Australia. Facsimiles of the originals can be found in the onlinBiodiversity Heritage Library (Vol.1)anVol 2) The author was the French botanist Jacques Labillardière, who visited the region in 1792 with the d'Entrecasteaux expedition. Published between 1804 and 1806, it is one of the earliest works to describe the plants of the continent; according to Denis and Maisie Carr, " practical terms, this was the first general flora of Australia." The work describes the botanical collections made by himself and his companion on the d'Entrecasteaux expedition, Charles Riche, and the unattributed and later collections of Nicolas Baudin's expedition. Labillardière's collections were seized by the English, but were returned to him in France at the intervention of Joseph Banks. He made his collections at Observatory Island and other locations at the Archipelago of the Recherche. Extensive collection we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daviesia
''Daviesia'', commonly known as bitter-peas, is a genus of about 130 species of flowering plants in the family Fabaceae, and is endemic to Australia. Plants in the genus ''Daviesia'' are shrubs or small trees with leaves modified as phyllodes or reduced to scales. The flowers are arranged singly or in groups, usually in leaf axils, the sepals joined at the base with five teeth, the petals usually yellowish with reddish markings and the fruit a pod. Description Plants in the genus ''Daviesia'' are shrubs or small trees with their leaves modified as phyllodes that are often sharply-pointed, or have leaves reduced to scales with the stems modified as cladodes. The flowers are usually arranged in leaf axils, either singly or in clusters or racemes with bracts sometimes present on the peduncles, pedicels or flowering stems. The sepals are joined at the base to form a bell-shaped tube with five teeth, the two upper teeth usually wider and the petals are usually yellowish with reddish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fabaceae
The Fabaceae or Leguminosae,International Code of Nomenclature for algae, fungi, and plants. Article 18.5 states: "The following names, of long usage, are treated as validly published: ....Leguminosae (nom. alt.: Fabaceae; type: Faba Mill. Vicia L.; ... When the Papilionaceae are regarded as a family distinct from the remainder of the Leguminosae, the name Papilionaceae is conserved against Leguminosae." English pronunciations are as follows: , and . commonly known as the legume, pea, or bean family, are a large and agriculturally important of |
Lathyrus Nissolia
''Lathyrus nissolia'', the grass vetchling or grass pea, is a species of flowering plant in the pea and bean family Fabaceae. It is native to most of Europe, Maghreb, Levant and the Caucasus. Despite its common names, it is not a grass, but belongs to the legume family (botany), family Fabaceae. Description Grass vetchling is an annual plant, with an erect stem branching from the base, and growing to a height of about 2 feet (0.7 m). It is entirely without true Leaf, leaves, Leaflet (botany), leaflets or tendrils. The leaf stalk, however, is flattened out until it closely resembles a blade of grass ending in a fine point, and the stipules at its base greatly help the deception. The crimson flowers come out in June and July, and are rather small, solitary and borne on a very long footstalk. They have the ability to self-pollinate. The flowers are succeeded by long, slender, straight pods, which are at first very flat, but become cylindrical when the contained peas are fully devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daviesia Angulata
''Daviesia angulata'' is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, spreading shrub with prickly, flattened phyllodes, and yellow flowers with red markings. Description ''Daviesia angulata'' is an erect, glabrous, spreading shrub that typically grows to a height of . Its leaves are reduced to flattened, sharply-pointed, tapering phyllodes wide and wide. The flowers are arranged in leaf axils in groups of between two and four on a peduncle long, each flower on a pedicel long with oblong bracts at the base. The sepals are long, the lobes about long, the two upper lobes joined in a broad "lip" and the lower three triangular. The standard petal is broadly egg-shaped with the narrower end towards the base and a notched tip, yellow with red markings near the centre and long, the wings yellow, tinged with red and about long and the keel yellow with a red tinge and about long. Flowering mainly occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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