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Zelkova
''Zelkova'' (from the Georgian language, Georgian ''dzelkva'', 'stone pillar') is a genus of six species of deciduous trees in the elm family Ulmaceae, native to southern Europe, and southwest and eastern Asia. They vary in size from shrubs (''Zelkova sicula, Z. sicula'') to large trees up to tall (''Zelkova carpinifolia, Z. carpinifolia''). The bark is smooth, dark brown. Unlike the elms, the branchlets are never corky or winged. The leaf, leaves are alternate, with serration, serrated margins, and (unlike the related elms) a symmetrical base to the leaf blade. The leaves are in two distinct rows; they have pinnation, pinnate Venation (botany) , venation and each vein extends to the leaf margin, where it terminates in a tooth. There are two stipules at each node, though these are caducous (shed early), leaving a pair of scars at the leaf base. ''Zelkova'' is Plant reproductive morphology, polygamous. Stamen, Staminate flowers are clustered in the lower leaf axils of young branch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zelkova Serrata
''Zelkova serrata'' (Japanese zelkova, Japanese elm, keyaki, or keaki; or ; zh, s=æ¦‰æ ‘, t=櫸樹, p=jÇ”shù; ) is a species of the genus ''Zelkova'' native plant, native to Japan, Korea, eastern China and Taiwan.Flora of China''Zelkova serrata''/ref>Andrews, S. (1994). Tree of the year: Zelkova. ''Int. Dendrol. Soc. Yearbook'' 1993: 11-30. It is often grown as an ornamental tree, and used in bonsai. There are two variety (biology), varieties, ''Zelkova serrata'' var. ''serrata'' in Japan and mainland eastern Asia, and ''Zelkova serrata'' var. ''tarokoensis'' (Hayata) Li on Taiwan which differs from the type in its smaller leaves with less deeply cut serration on the margins. Description ''Zelkova serrata'' is a medium-sized deciduous tree usually growing to tall. It is characterized by a short trunk dividing into many upright and erect spreading stems forming a broad, round-topped head. The tree grows rapidly when young though the growth rate slows to medium upon middle age ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zelkova Carpinifolia
''Zelkova carpinifolia'', known as Caucasian zelkova, Caucasian elm or just zelkova, is a species of ''Zelkova'', native to the Caucasus, Kaçkar, and Alborz mountains of eastern Europe and southwest Asia. It is a medium-sized to large deciduous tree growing to tall, with a trunk of up to in diameter. The crown is a highly distinctive vase-shape, with a short broad trunk dividing low down into numerous nearly erect branches. The leaves are alternate, long and broad, the margin bluntly serrated with 7–12 teeth on each side. The flowers are inconspicuous and greenish, with no petals, and are wind-pollinated. The fruit is a small nutlet in diameter. It is grown as an ornamental tree in Europe (huge exemplars of it can be found quite often in the western Georgian province of Imereti Imereti ( Georgian: იმერეთი, ) is a region of Georgia situated in the central-western part of the republic along the middle and upper reaches of the Rioni River. Imereti is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zelkova Sicula
''Zelkova sicula'' is a species of ''Zelkova'' in the family Ulmaceae, endemic to Sicily. Description It is a deciduous shrub growing to tall; its natural mature size is unknown, as all existing specimens have been heavily browsed by goats, limiting their growth. The leaves are oval, long and wide, with a petiole long; the margins are lobed, with 6–8 lobes on each side. Conservation The only known population, found in 1991, consists of 200–250 plants growing on the Monti Iblei area, in Buccheri, in southeast Sicily near Syracuse. This population are all thought to derive from possibly just one clone, or at the most only a very few distinct individuals. Its natural habitat is temperate forests and Mediterranean-type shrubby vegetation. It is threatened by habitat loss. The IUCN list this species as ''Critically Endangered An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zelkova Abelicea
''Zelkova abelicea'' is a species of tree in the family Ulmaceae. It is referred to by the common names Cretan zelkova, and on Crete proper as abelitsia (αμπελιτσιά). It is endemic to Crete. It is found in small numbers and is classified as Vulnerable on the IUCN red list of endangered species. Growth habit It is a medium-sized tree that grows from to tall. The tree is strongly branched resulting in a dense, crown shaped habit that extends close to the ground. The leaves are small and green with serrated edges. ''Z.abelicea'' produces perfect hermaphroditic flowers which are small and scented, and pollination is therefore thought to be achieved by insects. This species is capable of suckering, a form of reproduction where new shoots arise from an existing root system rather than from a seed. Natural regeneration by seed is rarely seen. Root cutting seem to show a 50% success rate, though best results may be seen in the cuttings taken from late August. Branch cutting o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulmaceae
The Ulmaceae () are a family (biology), family of flowering plants that includes the elms (genus ''Ulmus''), and the zelkovas (genus ''Zelkova''). Members of the family are widely distributed throughout the Temperate, north temperate zone, and have a scattered distribution elsewhere except for Australasia. The family was formerly sometimes treated to include the Celtis, hackberries, (''Celtis'' and allies), but an analysis by the Angiosperm Phylogeny Group suggests that these genera are better placed in the related family Cannabaceae. It generally is considered to include ca 7 genera and about 45 species. Some classifications also include the genus ''Ampelocera''. Description The family is a group of evergreen or deciduous trees and shrubs with mucilage, mucilaginous substances in leaf and bark tissue. Leaf, Leaves are usually alternate on the stems. The leaf blades are simple (not compound), with entire (smooth) or variously toothed margins, and often have an asymmetrical base. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only plants that are usable as lumber, or only plants above a specified height. But wider definitions include taller palms, tree ferns, bananas, and bamboos. Trees are not a monophyletic taxonomic group but consist of a wide variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some trees reaching several thousand years old. Trees evolved around 400 million years ago, and it is estimated that there are around three trillion mature trees in the world currently. A tree typically has many secondary branches supported cle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nut (fruit)
A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is usually edible. In general usage and in a culinary sense, many dry seeds are called nuts, but in a botanical context, "nut" implies that the shell does not open to release the seed (Dehiscence (botany), indehiscent). Most seeds come from fruits that naturally free themselves from the shell, but this is not the case in nuts such as hazelnuts, chestnuts, and acorns, which have hard shell walls and originate from a compound ovary. Definition A seed is the mature fertilised ovule of a plant; it consists of three parts, the embryo which will develop into a new plant, stored food for the embryo, and a protective seed coat. Botany, Botanically, a nut is a fruit with a woody pericarp developing from a syncarpous gynoecium. Nuts may be contained in an Bract#Involucral bracts, involucre, a cup-shaped structure formed from the flower bracts. The involucre may be scaly, spiny, leafy or tubular, depending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pistillate
Gynoecium (; ; : gynoecia) is most commonly used as a collective term for the parts of a flower that produce ovules and ultimately develop into the fruit and seeds. The gynoecium is the innermost whorl of a flower; it consists of (one or more) ''pistils'' and is typically surrounded by the pollen-producing reproductive organs, the stamens, collectively called the androecium. The gynoecium is often referred to as the "female" portion of the flower, although rather than directly producing female gametes (i.e. egg cells), the gynoecium produces megaspores, each of which develops into a female gametophyte which then produces egg cells. The term gynoecium is also used by botanists to refer to a cluster of archegonia and any associated modified leaves or stems present on a gametophyte shoot in mosses, liverworts, and hornworts. The corresponding terms for the male parts of those plants are clusters of antheridia within the androecium. Flowers that bear a gynoecium but no stamens a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermaphrodite
A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many taxonomic groups of animals, primarily invertebrates, are hermaphrodites, capable of producing viable gametes of both sexes. In the great majority of tunicates, mollusks, and earthworms, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the female or male. Hermaphroditism is also found in some fish species, but is rare in other vertebrate groups. Most hermaphroditic species exhibit some degree of self-fertilization. The distribution of self-fertilization rates among animals is similar to that of plants, suggesting that similar pressures are operating to direct the evolution of selfing in animals and plants. A rough estimate of the number of hermaphroditic animal species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fruit
In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propagated using the movements of humans and other animals in a symbiotic relationship that is the means for seed dispersal for the one group and nutrition for the other; humans, and many other animals, have become dependent on fruits as a source of food. Consequently, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings. In common language and culinary usage, ''fruit'' normally means the seed-associated fleshy structures (or produce) of plants that typically are sweet (or sour) and edible in the raw state, such as apples, bananas, grapes, lemons, oranges, and strawberries. In botanical usage, the term ''fruit'' als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard Spach
Édouard Spach (23 November 1801 – 18 May 1879) was a French botanist. The son of a merchant in Strasbourg, in 1824 he went to Paris, where he studied botany with René Desfontaines (1750–1831) and Antoine-Laurent de Jussieu (1748–1836). He then became the secretary of Charles-François Brisseau de Mirbel (1776–1854). When de Mirbel became a professor at the Muséum national d'histoire naturelle (National Museum of Natural History), he followed him and remained at the museum for the remainder of his career. He published many monographs, including ''Histoire naturelle des végétaux. Phanérogames'' ("Natural history of plants: Spermatophytes"; fourteen volumes and an atlas, Roret, Paris, 1834–1848), and with Hippolyte François Jaubert (1798–1874), ''Illustrationes plantarum orientalium'' ("Illustrations of plants of the East"; five volumes, Roret, Paris, 1842–1857). The genus ''Spachea'' was named after him by Adrien-Henri de Jussieu [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drupe
In botany, a drupe (or stone fruit) is a type of fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pip'' (UK), ''pit'' (US), ''stone'', or ''pyrena'') of hardened endocarp with a seed (''kernel'') inside. Drupes do not split open to release the seed, i.e., they are dehiscence (botany), indehiscent. These fruits usually develop from a single carpel, and mostly from flowers with Superior ovary, superior ovaries (polypyrenous drupes are exceptions). The definitive characteristic of a drupe is that the hard, woody (lignified) stone is derived from the Ovary (botany), ovary wall of the flower. In an aggregate fruit, which is composed of small, individual drupes (such as a raspberry), each individual is termed a drupelet, and may together form an aggregate fruit. Such fruits are often termed ''berries'', although botanists use a Berry (botany), different definition of ''berry''. Other fleshy fruits may have a stony enclosur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
