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Eriastrum Wilcoxii
''Eriastrum wilcoxii'' is a species of flowering plant in the phlox family known by the common name Wilcox's woollystar. It is native to the western United States, where it grows in various types of desert and plateau habitat. It is an annual herb producing a thin, branching, usually woolly stem up to about 30 centimeters tall. The leaves are narrow and thready, up to 3 centimeters long, and sometimes divided into two or more lobes. The inflorescence is a woolly cluster of narrow, leaflike bract In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...s laced with webby fibers. The small flowers have yellow throats and blue corollas with lobes up to half a centimeter long. References External linksJepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aven Nelson
Aven Nelson (March 24, 1859 – March 31, 1952) was an American botanist who specialized in plants of the Rocky Mountains. He was one of the founding professors of the University of Wyoming, where he taught for 55 years as professor and served as president (1918-1922). He served as president of the American Society of Plant Taxonomists and Botanical Society of America. Biography Nelson was born at Sugar Creek, in Lee County, Iowa to parents Christen Nelson and Anne (Evenson) Nelson, who had immigrated from Norway. Aven was the youngest of four children in a Quaker family. He attended Kirksville State Normal School in Kirksville, Missouri from which he was graduated in 1883 with his Bachelor of Arts degree, while in 1887 he received the M. S. D. degree. He further continued his education in Drury College at Springfield, Missouri, which conferred upon him a Master of Science degree in 1890. He next entered Harvard University was awarded the Master of Arts degree in 1892. In 1893, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Louis Mason
Herbert Louis (''né'' Lewis) Mason (1896–1994) was an American botany professor, plant collector, and herbarium director. After graduating from high school, Herbert Mason and his identical twin brother matriculated at Stanford University. Their education was interrupted when they both volunteered for military service in WW I and served in a U.S. Army hospital in Beaune, France. After the end of the war, Herbert Mason returned to Stanford University and received his bachelor's degree there in 1921. He became a graduate student at the University of California, Berkeley (U.C. Berkeley) and received an M.A. there in 1923. From 1923 to 1925 he taught at Mills College. From 1925 to 1931 Mason was employed as an associate in Willis L. Jepson's Phenogamic Laboratory. In 1932 he received his Ph.D. from U.C. Berkeley. His thesis committee consisted of W. L. Jepson (as committee chair), Ralph Works Chaney, and Charles Lewis Camp. In 1932 Mason participated in an expedition to the Bering Se ... [...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] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture. Typically, they also look different from the parts of the flower, such as the petals or sepals. A plant having bracts is referred to as bracteate or bracteolate, while one that lacks them is referred to as ebracteate and ebracteolate, without bracts. Variants Some bracts are brightly-coloured and serve the function of attracting pollinators, either together with the perianth or instead of it. Examples of this type of bract include those of ''Euphorbia pulcherrima'' (poinsettia) and ''Bougainvillea'': both of these have large colourful bracts surrounding much smaller, less colourful flowers. In grasses, each floret (flower) is enclosed in a pair of papery bracts, called the lemma (lower bract) and p ... [...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] |
Flora Of The Western United States
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
