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Graminales
The Poales are a large order of flowering plants in the monocotyledons, and includes families of plants such as the grasses, bromeliads, and sedges. Sixteen plant families are currently recognized by botanists to be part of Poales. Description The flowers are typically small, enclosed by bracts, and arranged in inflorescences (except in three species of the genus ''Mayaca'', which possess very reduced, one-flowered inflorescences). The flowers of many species are wind pollinated; the seeds usually contain starch. Taxonomy The APG III system (2009) accepts the order within a monocot clade called commelinids, and accepts the following 16 families: The earlier APG system (1998) adopted the same placement of the order, although it used the spelling "commelinoids". It did not include the Bromeliaceae and Mayaceae, but had the additional families Prioniaceae (now included in Thurniaceae), Sparganiaceae (now in Typhaceae), and Hydatellaceae (now transferred out of the monocots; re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Australia and Ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anarthriaceae
The Anarthriaceae are a family of three genera, '' Anarthria'', ''Hopkinsia'' and ''Lyginia'' of flowering plants, now included in Restionaceae following APG IV (2016). The family is accepted in the Angiosperm Phylogeny Group's classification system, APG III system, but is not considered a separate family in many other taxonomic systems.Watson, L., and Dallwitz, M.J. 1992 onwards. The families of flowering plants: descriptions, illustrations, identification, and information retrieval. Version: 19 December 2012. http://delta-intkey.com The three genera are herbaceous but differ greatly in characteristics. The APG II system, of 2003 (unchanged from the APG system, of 1998), does recognize this family, and assigns it to the order Poales in the clade commelinids, in the monocots. The family contains three genera and 10 species, and is found in Southwest Australia Southwest Australia is a biogeographic region in Western Australia. It includes the Mediterranean-climate area of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xyridaceae
The Xyridaceae are a family of flowering plants. This family has been recognized by many taxonomists and is known as the yellow-eyed grass family. The APG II system, of 2003 (unchanged from the APG system of 1998), also recognizes this family, and assigns it to the order Poales in the clade commelinids, in the monocots. This treatment in APG II represents a slight change from the APG system of 1998, which had recognized the family Abolbodaceae for some of the plants included here; that family was unplaced as to order, but was assigned to this same clade (although APG used the spelling "commelinoids"). The family contains almost 400 species in five genera, but most of the species are found in the genus '' Xyris'' (see also '' Abolboda''). The species are mostly tropical and subtropical. The Cronquist system of 1981 also recognized such a family and placed it in the order Commelinales in the subclass Commelinidae in class Liliopsida in division Magnoliophyta. The Wettstein syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Typhaceae
The Typhaceae () are a family of flowering plants, sometimes called the cattail family. The botanical name for the family has been recognized by most taxonomists. Description Members can be recognized as large marsh herbs with alternate two-ranked leaves and a brownish compact spike of unisexual flowers. The plants have creeping rhizomes. The male flowers either lack a perianth or have six scales. They may also have club shaped threads or wedge or spatula shaped scales that are intermingled wit the flowers. They have between two and seven stamens. The female flowers have a perianth of fine hairs or scales. These may be accompanied by slender bracteoles. The ovary is one chambered and contains a single pendulous ovule. The style is simple and the stigma simple and long. The fruit may or may not be stalked and the pericarp may be thick or thin. The seeds are endospermous with a cylindric embryo. Fossils The earliest fossils, including pollen and flowers, have been recovered fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thurniaceae
The Thurniaceae are a family of flowering plants composed of two genera with four species. The botanical name has been recognized by most taxonomists. The APG II system, of 2003, also recognizes such a family, and assigns it to the order Poales in the clade commelinids, in the monocots. The family consists of two genera, totalling only a few species, perennial plants of wet habitats in South America and South Africa. This represents a slight change from the APG system, 1998, which treated the two genera as each constituting their own family (Prioniaceae and Thurniaceae), both placed in the order Poales. The Cronquist system of 1981 also recognized such a family and placed it in the order Juncales in the subclass Commelinidae in class Liliopsida in division Magnoliophyta. The Wettstein system, last updated in 1935, placed the family in order Liliiflorae Lilianae (also known as Liliiflorae) is a botanical name for a superorder (that is, a rank higher than that of order) of f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrolepidaceae
Centrolepidaceae are a family of flowering plants now included in Restionaceae following APG IV (2016). The botanical name has been recognized by most taxonomists. The APG II system, of 2003 (unchanged from the APG system, 1998), also recognised such a family, and assigned it to the order Poales in the clade commelinids in the monocots. The family was regarded as containing three genera, '' Aphelia'', ''Centrolepis'', and ''Gaimardia'', with about 35 species total, found in Australia, New Zealand, southern South America and Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin .... References External linksCentrolepidaceae in western Australia [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Restionaceae
The Restionaceae, also called restiads and restios, are a family (biology), family of flowering plants native to the Southern Hemisphere; they vary from a few centimeters to 3 meters in height. Following the APG IV system, APG IV (2016): the family now includes the former families Anarthriaceae, Centrolepidaceae and Lyginiaceae, and as such includes 51 genera with 572 known species. Based on evidence from fossil pollens, the Restionaceae likely originated more than 65 million years ago during the Cretaceous, Late Cretaceous period, when the southern continents were still part of Gondwana.Bremer, K. (2002). "Gondwanan Evolution of the Grass Alliance of Families (Poales)." ''Evolution'', 56(7): 1374-1387 Description The family consists of tufted or rhizomatous, herbaceous plants belonging to a group of monocotyledons that includes several similar families, such as the Cyperaceae, sedges, Juncaceae, rushes, and Poaceae, grasses. They have green, photosynthetic stems and leaves that h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapateaceae
The Rapateaceae are a family of flowering plants. The botanical name has been recognized by most taxonomists. The APG II system of 2003 also recognizes this family, and assigns it to the order Poales in the clade commelinids, in the monocots. This represents a slight change from the APG system, 1998, which left the family unplaced as to order, but placed it in the same clade (although it used the spelling "commelinoids"). The family is divided into 16 genera with a total of about 94 known species, found in tropical South America and tropical west Africa. The Cronquist system of 1981 also recognized this family and placed it in the order Commelinales in the subclass Commelinidae in class Liliopsida in division Magnoliophyta Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants t .... Gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayacaceae
''Mayaca'' is a genus of flowering plants, often placed in its own family, the Mayacaceae (or Mayaceae in earlier systems). In the APG II system of 2003, it is assigned to the order Poales in the clade commelinids. The Cronquist system, of 1981, also recognised such a family and placed it in the order Commelinales in the subclass Commelinidae. The group is widely distributed in Latin America from Mexico to Argentina, as well as in the West Indies, the southeastern United States, and central Africa. Species Eighteen or so species names have been proposed, but only 5 are accepted as distinct. * ''Mayaca baumii'' Gürke - Congo-Brazzabille, Zaïre, Angola, Zambia * ''Mayaca fluviatilis'' Aubl. - southeastern United States from Texas to North Carolina; West Indies (Cuba, Jamaica, Trinidad); Latin America from central Mexico to Argentina * ''Mayaca kunthii'' Seub. - Venezuela, Brazil, Uruguay * ''Mayaca longipes'' Mart. ex Seub. - Venezuela, Brazil, Colombia, the Guianas * ''M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncaceae
Juncaceae is a family of flowering plants, commonly known as the rush family. It consists of 8 genera and about 464 known species of slow-growing, rhizomatous, herbaceous monocotyledonous plants that may superficially resemble grasses and sedges. They often grow on infertile soils in a wide range of moisture conditions. The best-known and largest genus is ''Juncus''. Most of the ''Juncus'' species grow exclusively in wetland habitats. A few rushes, such as '' Juncus bufonius'' are annuals, but most are perennials. Description The leaves are evergreen and well-developed in a basal aggregation on an erect stem. They are alternate and tristichous (i.e., with three rows of leaves up the stem, each row of leaves arising one-third of the way around the stem from the previous leaf). Only in the genus '' Distichia'' are the leaves distichous. The rushes of the genus ''Juncus'' have flat, hairless leaves or cylindrical leaves. The leaves of the wood-rushes of the genus ''Luzula' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joinvilleaceae
The Joinvilleaceae are a family of flowering plants with a single genus including four species. The APG II system, of 2003 (unchanged from the APG system, 1998) assigns it to the order Poales in the clade commelinids in the monocots. The family consists of one genus with four currently accepted species, distributed from the Malay Peninsula to the Caroline Islands and high islands in the Pacific Ocean. It is evolutionarily significant as a relictual group closely related to grasses. They closely resemble large grass plants, in both general appearance and microanatomy, but possess fleshy fruits. Species * ''Joinvillea ascendens'' Gaudich. ex Brongn. & Gris Hawaiian Islands * ''Joinvillea borneensis'' Becc. Western Malesia to Caroline Islands * ''Joinvillea bryanii'' Christoph. Samoa * ''Joinvillea plicata'' (Hook.f.) Newell & B.C.Stone Solomon Islands to New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).sv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flagellariaceae
''Flagellaria'' is the sole genus in the flowering plant family (biology), family Flagellariaceae with only five species.Wepfer, P. H., & Linder, H. P. (2014). The taxonomy of Flagellaria (Flagellariaceae). Australian Systematic Botany, 27(3), 159-179. https://dx.doi.org/10.1071/SB13048 The family has historically been recognized by few taxonomists. The APG II system, of 2003 (unchanged from the APG system, 1998), does recognize such a family, and assigns it to the order Poales in the clade commelinids, in the monocots. ''Flagellaria'' consists of only five known species, found in the tropical and subtropical regions of Asia, Africa, Australia, and various island of the Pacific Islands, Pacific and Indian Oceans. List of species * ''Flagellaria collaris'' Wepfer & H.P.Linder - Fiji * ''Flagellaria gigantea'' Hook.f. - New Guinea, Solomon Islands, Samoa, Niue, Fiji, New Guinea * ''Flagellaria guineensis'' Schumach. - tropical and southern Africa, Madagascar, Sri Lanka * ''Flagel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
