|
Eriastrum Eremicum
''Eriastrum eremicum'', the desert woollystar, is an annual plant An annual plant is a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies. The length of growing seasons and period in which they take place vary according to geographical ... in the phlox family ( Polemoniaceae) found in the Sonoran Desert.Sonoran Desert Wildflowers, Richard Spellenberg, 2nd ed., 2012, It often grows in great abundance covering the desert floor in a blanket of sky blue color. References eremicum Flora of the Sonoran Deserts {{Polemoniaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annual Plant
An annual plant is a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies. The length of growing seasons and period in which they take place vary according to geographical location, and may not correspond to the four traditional seasonal divisions of the year. With respect to the traditional seasons, annual plants are generally categorized into summer annuals and winter annuals. Summer annuals germinate during spring or early summer and mature by autumn of the same year. Winter annuals germinate during the autumn and mature during the spring or summer of the following calendar year. One seed-to-seed life cycle for an annual plant can occur in as little as a month in some species, though most last several months. Oilseed rapa can go from seed-to-seed in about five weeks under a bank of fluorescent lamps. This style of growing is often used in classrooms for education. Many desert annuals are therophytes, be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemoniaceae
The Polemoniaceae (Jacob's-ladder or phlox family) are a family of flowering plants consisting of about 25 genera with 270–400 species of annuals and perennials native to the Northern Hemisphere and South America, with the center of diversity in western North America. Only one genus (''Polemonium'') is found in Europe, and two (''Phlox'' and ''Polemonium'') in Asia, where they are confined to cool temperate to arctic regions; both genera also occur more widely in North America, suggesting relatively recent colonization of the Old World from North America. The family can be distinguished from most other eudicot families by the ovary made up of three fused carpels (usually with three chambers, but with one chamber in some species). The members of the family have five sepals, five petals fused, and five stamens that alternate with the lobes of the corolla. For decades, most sources used a classification of the family published by Grant in 1959, but new evidence, including mol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonoran Desert
The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona and California). It is the hottest desert in both Mexico and the United States. It has an area of . In phytogeography, the Sonoran Desert is within the Sonoran Floristic province of the Madrean Region of southwestern North America, part of the Holarctic realm of the northern Western Hemisphere. The desert contains a variety of unique endemic plants and animals, notably, the saguaro (''Carnegiea gigantea'') and organ pipe cactus (''Stenocereus thurberi''). The Sonoran Desert is clearly distinct from nearby deserts (e.g., the Great Basin, Mojave, and Chihuahuan deserts) because it provides subtropical warmth in winter and two seasons of rainfall (in contrast, for example, to the Mojave's dry summers and cold winters). This creates an ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriastrum
''Eriastrum'' is a genus of flowering plants in the phlox family which are known commonly as woollystars. These wildflowers are somewhat diverse in appearance but are usually erect, thin-stemmed herbs which bear purple to white blooms. Most species have inflorescences which are webbed with a woolly mesh of white fibers. Woollystars are native to western North America. Species: *'' Eriastrum abramsii'' - Abrams' woollystar *'' Eriastrum brandegeeae'' - Brandegee's woollystar *'' Eriastrum densifolium'' - giant woollystar *'' Eriastrum diffusum'' - miniature woollystar *'' Eriastrum eremicum'' - desert woollystar *'' Eriastrum filifolium'' - lavender woollystar *'' Eriastrum hooveri'' - Hoover's woollystar *'' Eriastrum luteum'' - yellow woollystar *'' Eriastrum pluriflorum'' - Tehachapi woollystar *'' Eriastrum sapphirinum'' - sapphire woollystar *'' Eriastrum sparsiflorum'' - Great Basin woollystar *'' Eriastrum virgatum'' - wand woollystar *'' Eriastrum wilcoxii'' - Wilcox's wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
