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Falcatifolium
''Falcatifolium'' is a genus of conifers of the family Podocarpaceae. The genus includes evergreen dioecious shrubs and large trees of up to . Five species are presently recognized. The genus was first described by de Laubenfels in 1969, and is composed of species formerly classified in genus ''Dacrydium''. Genus ''Facatifolium'' ranges from New Caledonia to the Malay Peninsula, including New Guinea, the Indonesian islands of Sulawesi, Borneo, and the Obi and Riau Islands, and the Philippine island of Mindoro. '' Falcatifolium taxoides'' from New Caledonia is the exclusive host of the '' Parasitaxus usta'', the only known parasitic gymnosperm The gymnosperms ( ; ) are a group of woody, perennial Seed plant, seed-producing plants, typically lacking the protective outer covering which surrounds the seeds in flowering plants, that include Pinophyta, conifers, cycads, Ginkgo, and gnetoph .... Phylogeny References *de Laubenfels, David J. 1969. A revision of the Malesian and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcatifolium Falciforme
''Falcatifolium falciforme'' is a species of conifer in the family Podocarpaceae. It is found in Brunei, Indonesia, and Malaysia on the Malay Peninsula and Borneo. Habitat and ecology ''Falcatifolium falciforme'' is most commonly found on mountain ridges where forest is more sparse. This tree can grow in areas of leached podzolic sands or can grow near larger conifer Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ... trees in more fertile soils. References Podocarpaceae Least concern plants Taxonomy articles created by Polbot Plants described in 1868 Flora of the Borneo montane rain forests Flora of Borneo Flora of Peninsular Malaysia {{conifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcatifolium Angustum
''Falcatifolium angustum'' is a species of conifer in the family Podocarpaceae found only in Malaysia. it can grow up to twenty meters tall.'Falcatifolium angustum' in the Gymnosperm Database retrieved 13 October 2013 It is threatened by , in 1998 it was known to exist only in two locations, both in Sarawak
Sarawak ( , ) is a States and federal territories of Malaysia, state of Malaysia. It is the largest among the 13 states, with an area almost equal to that of Peninsular Malay ...
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Falcatifolium Papuanum
''Falcatifolium papuanum'' is a species of conifer in the family Podocarpaceae. It is found only in Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n .... References Podocarpaceae Least concern plants Taxonomy articles created by Polbot Taxa named by David John de Laubenfels {{conifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcatifolium Taxoides
''Falcatifolium taxoides'' is a species of conifer in the family Podocarpaceae. It is found only in New Caledonia, and is the only known host of its non-photosynthetic, possibly parasitic relative, '' Parasitaxus usta''. Etymology ''Falcatifolium'' means 'with sickle-shaped leaves', while ''taxoides'' means 'yew-like' (resembling ''Taxus ''Taxus'' is a genus of coniferous trees or shrubs known as yews in the family Taxaceae. Yews occur around the globe in temperate zones of the northern hemisphere, northernmost in Norway and southernmost in the South Celebes. Some populations ex ...'').Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 162, 372 References Podocarpaceae Least concern plants Endemic flora of New Caledonia Trees of New Caledonia Taxonomy articles created by Polbot Taxa named by Jean Antoine Arthur Gris Taxa named by Adolphe-Théodore Brongniart Taxa named by David John de Laubenfels {{conif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podocarpaceae Genera
Podocarpaceae is a large family of mainly southern hemisphere conifers, known in English as podocarps, comprising about 156 species of evergreen trees and shrubs.James E. Eckenwalder. 2009. ''Conifers of the World''. Portland, Oregon: Timber Press. . It contains 20 genera if '' Phyllocladus'' is included and '' Manoao'' and '' Sundacarpus'' are recognized. The family achieved its maximum diversity in the Cenozoic, making the Podocarpaceae family one of the most diverse in the southern hemisphere. The family is a classic member of the Antarctic flora, with its main centres of diversity in Australasia, particularly New Caledonia, Tasmania, and New Zealand, and to a slightly lesser extent Malesia and South America (primarily in the Andes Mountains). Several genera extend north of the equator into Indochina and the Philippines. ''Podocarpus'' reaches as far north as southern Japan and southern China in Asia, and Mexico in the Americas, and '' Nageia'' into southern China and south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcatifolium Sleumeri
''Falcatifolium sleumeri'' is a species of conifer in the family Podocarpaceae. It is found only in a small area in the far west of Western New Guinea Western New Guinea, also known as Papua, Indonesian New Guinea, and Indonesian Papua, is the western half of the island of New Guinea, formerly Dutch and granted to Indonesia in 1962. Given the island is alternatively named Papua, the region ... (Papua). References Podocarpaceae Endemic flora of Western New Guinea Near threatened plants Taxonomy articles created by Polbot Taxa named by David John de Laubenfels {{conifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnosperm
The gymnosperms ( ; ) are a group of woody, perennial Seed plant, seed-producing plants, typically lacking the protective outer covering which surrounds the seeds in flowering plants, that include Pinophyta, conifers, cycads, Ginkgo, and gnetophyta, gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in ( and ), and literally means 'naked seeds'. The name is based on the unenclosed condition of their seeds (called ovules in their unfertilized state). The non-encased condition of their seeds contrasts with the seeds and ovules of flowering plants (angiosperms), which are enclosed within an Ovary (botany), ovary. Gymnosperm seeds develop either on the surface of scales or Leaf, leaves, which are often modified to form Conifer cone, cones, or on their own as in Taxus, yew, ''Torreya'', and ''Ginkgo''. The life cycle of a gymnosperm involves alternation of generations, with a dominant diploid sporophyte phase, and a reduced haploid gam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitaxus Usta
''Parasitaxus usta'', also known in French as ''cèdre rabougri'', is a rare species of conifer of the family Podocarpaceae, and the sole species of the genus ''Parasitaxus''. Description It is a woody shrub up to 1.8 m endemic to the remote, densely forested areas of New Caledonia, first discovered and described by Vieillard in 1861. The first definitive report that it was a parasite was in 1959. Taxonomy Molecular phylogenetic analysis also suggest affinities between ''Parasitaxus'' and the genera ''Manoao'' (New Zealand) and ''Lagarostrobos'' (Tasmania). ''Parasitaxus'' has been shown to contain high levels of chlorophyll. However, a genome analysis shows that many genes for photosynthesis are missing from the parasite's plastid genome, strongly suggesting that ''Parasitaxus'' completely depends on its host for survival. Around 60% of the genes normally present in a podocarp plastid genome were entirely absent or present only as fragments. They were predominantly genes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dacrydium
''Dacrydium'' is a genus of conifers belonging to the podocarp family Podocarpaceae. Sixteen species of evergreen Plant sexuality, dioecious trees and shrubs are presently recognized. The genus was first described by Solander in 1786, and formerly included many more species, which were divided into sections A, B, and C by Florin in 1931. The revisions of de Laubenfels and Quinn (see references), reclassified the former section A as the new genus ''Falcatifolium'', divided Section C into new genera ''Lepidothamnus, Lagarostrobos'' and ''Halocarpus'', and retained Section B as genus ''Dacrydium''. Species , Plants of the World Online accepted twenty one species: Distribution The natural range of ''Dacrydium'' extends from New Zealand, New Caledonia, Fiji and the Solomon Islands through Malesia (New Guinea, Indonesia, Malaysia and the Philippines), to Thailand and southern China. References *de Laubenfels, David J. 1969. A revision of the Melanesia and Pacific rainforest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Sexuality
Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction. Among all living organisms, flowers, which are the reproductive structures of angiosperms, are the most varied physically and show a correspondingly great diversity in methods of reproduction. Plants that are not flowering plants ( green algae, mosses, liverworts, hornworts, ferns and gymnosperms such as conifers) also have complex interplays between morphological adaptation and environmental factors in their sexual reproduction. The breeding system, or how the sperm from one plant fertilizes the ovum of another, depends on the reproductive morphology, and is the single most important determinant of the genetic structure of nonclonal plant populations. Christian Konrad Sprengel (1793) studied the reproduction of flowering plants and for the first time it was understood that the pollination pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
