Taxodiaceae


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Taxodiaceae

 

a family of gymnospermous coniferous monoecious plants. Members of Taxodiaceae are predominantly tall trees with needle-like or scalelike leaves. The male spikelets are small and apical or axillary; the microsporophylls (stamens) have a widened section with two to nine microsporangia (pollen sacs) on a short stalk. The female strobiles (cones) are small and apical, with numerous scales. There are nine genera encompassing 15–16 species, which are distributed in East Asia and North America; one genus, Athrotaxis, is found in Tasmania.

In earlier geological periods, the Taxodiaceae were numerous and widely distributed in the northern hemisphere. Modern Taxodiaceae are authentic “living fossils,” especially the genera Metasequoia, Glyptostrobus, and Taiwania. The best-known genera are Sequoia, Sequoiadendron (giant Sequoia), Taxodium, Cryptomeria (Japanese cedar), and Cunninghamia. The wood of the Taxodiaceae has various uses. The Taxodiaceae are often cultivated as ornamentals, for example, in the southern USSR.

References in periodicals archive ?
Baldcypress, Taxodium distichum (Taxodiaceae), is a widespread deciduous conifer of lowland southeastern United States and northeastern Mexico.
The alluvial swamps are characterized by the presence of a deciduous conifer-the bald cypress or swamp cypress (Taxodium distichum, Taxodiaceae)-though swamp hardwoods and broadleaf evergreens are also important in large areas where climatic and ecological conditions allow it.
Immunocytochemical localization of Cry j 1, the major allergen of Cryplomeria japonica (Taxodiaceae) in Cupressus arizonica and Cupressus sempervirens (Cupressaceae) pollen grains.
Ma, "The chronology of the "living fossil" Metasequoia glyptostroboides (taxodiaceae): a review (1943-2003)," Harvard Papers in Botany, vol.
(other) conifers: Cupressaceae, Podocarpaceae, Taxaceae, Taxodiaceae.
3a-e, h, j, k) but is often well concealed in a form of incipient angiospermy within cone scales, as in Pinaceae, Taxodiaceae and Sciadopityaceae, even though the scales must gape at an early stage so as to provide pollen access to the enclosed ovules (Fig.
Aunque queda mucho por documentar, se sabe que crecieron abundantes Arecaceae con hojas pinnadas y quilladas, representantes de Zingiberales, probables, Fagaceae, Burseraceae y/o Anacardiaceae, desde luego miembros de Laurales, y de Euphorbiaceae, ademas de miembros de Pinaceae, Cheirolepidaceae y probablemente Taxodiaceae eran compartidas entre la costa y la parte central de America del Norte (e.g., Rodriguez de la Rosa y Cevallos-Ferriz, 1994; Rodriguez de la Rosa y Cevallos-Ferriz et al., 1998; Hernandez-Castillo y Cevallos-Ferriz, 1999; Calvillo-Canadell y Cevallos-Ferriz, 2007; Estrada-Ruiz et al., 2010) (Fig.
TAXODIUM {tax-OH-dee-um} Richard 1810 * Bald-Cypress * [Taxus, generic name of yew, and Greek -oides, like.] Following Watson and Eckenwalder (1993), this genus (along with the family Taxodiaceae) is included within Cupressaceae.
The hot deserts and subdeserts of the New World have a Neotropical flora, characterized by several families and genera that are exclusive or almost exclusive to the New World such as the Agavaceae, Bromeliaceae, Cactaceae, Fouquieriaceae, Garryaceae, Hydrophyl-laceae, Krameriaceae, Loasaceae, Passifloraceae, Taxodiaceae, and Turneraceae.
Fossil Taxodiaceae and new angiosperm macrofossils from Quilchema British Columbia.
These short shoots were the forerunners of the seed-scale complex of the modern Taxodiaceae and Pinaceae.