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Heterotheca
''Heterotheca'', (common names goldenasters, camphorweed, or telegraph weed) are North American plants in the family Asteraceae. Etymology ''Heterotheca'' comes from Ancient Greek "other, different" and "case, chest", and refers to the fact that, in some species in the genus, the cypselae (achenes containing seed) of the disk and ray florets have different shapes. Description, biology These are annual and perennial herbs bearing daisy-like flower heads with yellow disc florets and usually yellow ray florets, associated with mesic to xeric habitats across North America. Several species now included in ''Heterotheca'' were previously classified in the genus '' Chrysopsis'' ''Heterotheca'' species are often used as food plants by the larvae of some Lepidoptera species including '' Schinia lynx'', ''Schinia nubila'' and '' Schinia saturata'' (all of which have been recorded on ''Heterotheca subaxillaris''). Chemistry The leaf volatiles from which the name "camphorweed" is deriv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Lamarckii
''Heterotheca subaxillaris'', known by the common name camphorweed, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of the United States (from California to Massachusetts) as well as Mexico and Belize. ''Heterotheca subaxillaris'' is a perennial, aromatic herb up to 203 centimeters (80 inches or 6 2/3 feet) in height, often with several erect stems. The stems are hairy to bristly. The inflorescence contains 3-180 flower heads in a flat-topped array. Each head contains 15–35; yellow ray florets surrounding 25–60 disc florets at the center. Chemistry The leaf volatiles from which the name "camphorweed" is derived include camphor, but as a minor constituent (less than 2%); of 41 documented volatiles, for example, caryophyllene, pinene, borneol, myrcene, and limonene Limonene is a colorless liquid aliphatic hydrocarbon classified as a cyclic monoterpene, and is the major component in the oil of citrus fruit peels. The - ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Subaxillaris
''Heterotheca subaxillaris'', known by the common name camphorweed, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of the United States (from California to Massachusetts) as well as Mexico and Belize. ''Heterotheca subaxillaris'' is a perennial, aromatic herb up to 203 centimeters (80 inches or 6 2/3 feet) in height, often with several erect stems. The stems are hairy to bristly. The inflorescence contains 3-180 flower heads in a flat-topped array. Each head contains 15–35; yellow ray florets surrounding 25–60 disc florets at the center. Chemistry The leaf volatiles from which the name "camphorweed" is derived include camphor, but as a minor constituent (less than 2%); of 41 documented volatiles, for example, caryophyllene, pinene, borneol, myrcene, and limonene Limonene is a colorless liquid aliphatic hydrocarbon classified as a cyclic monoterpene, and is the major component in the oil of citrus fruit peels. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Shevockii
''Heterotheca shevockii'' is a rare species of flowering plant in the family Asteraceae known by the common names Kern Canyon false goldenaster and Shevock's goldenaster. It is endemic to California in the United States, where it is known only from Kern County. It grows along a 21-mile stretch of the Kern River.0.4 inches) long including its pappus.''Heterotheca shevockii''. Flora of North America. Jepson Manual Treatment. Flowering occurs mostly in August and September, but it may be seen in flower between January and November. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Camporum
''Heterotheca camporum'', known by the common name lemonyellow false goldenaster, is a North American species of flowering plant in the family Asteraceae. It is found only in the central United States, primarily the Ozarks, the Cumberland Plateau, and the middle Mississippi Valley. There are reports of additional populations in the Northeast, the Southeast, and in the Great Lakes region, but these appear to be waifs or naturalizations. ''Heterotheca camporum'' is a perennial herb growing 150 centimeters (5 feet) in height, spreading by means of underground rhizomes. There can be as many as 100 stems from one clone. Each stem can produce 1-24 flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ... in flat-topped arrays Each head contains 16–38 ray florets surrounding 23– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Brandegeei
''Heterotheca brandegeei'' is a rare Mexican species of flowering plant in the family Asteraceae. The plant is endemic to Mexico, found only in the Sierra San Pedro Martir range in the state of Baja California, in the ''Baja California Norte'' region of the Baja California Peninsula.University of Waterloo (Canada), Astereae Lab, ''Heterotheca brandegei'' drawings and nativity information as ''Chrysop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterotheca Barbata
''Heterotheca barbata'', the Spokane false goldenaster, is a very rare North American species of flowering plant in the family Asteraceae. It has been found only in the northwestern United States, in eastern Washington and northern Idaho. includes line drawings and distribution map References barbata
Barbata (Bergamasque: ) is a ''comune'' (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about east of Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, a ...
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Chrysopsis
''Chrysopsis'' (golden asters), are plants in the family Asteraceae native to the southern and eastern United States. All the species are found in Florida, although some are found in other states as well. These are annual and perennial herbs bearing daisy-like flower heads with yellow disc florets and usually yellow ray florets. Some species formerly classified in this genus are now included in other genera: ''Heterotheca'', '' Pityopsis'', '' Stenotus'', '' Ionactis'', ''Aster'', '' Eucephalus'', ''Erigeron'', '' Machaeranthera'', '' Croptilon'', ''Xanthisma'', '' Oclemena'', '' Bradburia'', ''Oxypappus'', ''Arnica'', and '' Helichrysopsis''. Golden asters are often used as food plants by the larvae of some Lepidoptera species, including '' Schinia petulans'' (which feeds exclusively on '' C. subulata''). ; Accepted species * '' Chrysopsis delaneyi'' - DeLaney's golden aster - Florida * '' Chrysopsis floridana'' - Florida golden aster - Florida * '' Chrysopsis godfreyi'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borneol
Borneol is a bicyclic organic compound and a terpene derivative. The hydroxyl group in this compound is placed in an '' endo'' position. The exo diastereomer is called isoborneol. Being chiral, borneol exists as enantiomers, both of which are found in nature. Reactions Borneol is oxidized to the ketone ( camphor). Occurrence The compound was named in 1842 by the French chemist Charles Frédéric Gerhardt. Borneol can be found in several species of ''Heterotheca'', ''Artemisia'', ''Rosmarinus officinalis'' (rosemary) ''Dipterocarpaceae'', ''Blumea balsamifera'' and '' Kaempferia galanga''. It is one of the chemical compounds found in castoreum. This compound is gathered from the beaver's plant food. Synthesis Borneol can be synthesized by reduction of camphor by the Meerwein–Ponndorf–Verley reduction (a reversible process). Reduction of camphor with sodium borohydride (fast and irreversible) gives instead the diastereomer isoborneol. : Uses Whereas ''d''-borneol w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinene
Pinene is a collection of unsaturated bicyclic monoterpenes. Two geometric isomers of pinene are found in nature, α-pinene and β-pinene. Both are chiral. As the name suggests, pinenes are found in pines. Specifically, pinene is the major component of the liquid extracts of conifers. Pinenes are also found in many non-coniferous plants such as camphorweed (''Heterotheca'') and big sagebrush (''Artemisia tridentata''). Isomers Biosynthesis α-Pinene and β-pinene are both produced from geranyl pyrophosphate, via cyclisation of linaloyl pyrophosphate followed by loss of a proton from the carbocation equivalent. Researchers at the Georgia Institute of Technology and the Joint BioEnergy Institute have been able to synthetically produce pinene with a bacterium. Plants Alpha-pinene is the most widely encountered terpenoid in nature and is highly repellent to insects. Alpha-pinene appears in conifers and numerous other plants. Pinene is a major component of the essential oil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camphor
Camphor () is a waxy, colorless solid with a strong aroma. It is classified as a terpenoid and a cyclic ketone. It is found in the wood of the camphor laurel ('' Cinnamomum camphora''), a large evergreen tree found in East Asia; and in the kapur tree ( ''Dryobalanops'' sp.), a tall timber tree from South East Asia. It also occurs in some other related trees in the laurel family, notably '' Ocotea usambarensis''. Rosemary leaves (''Rosmarinus officinalis'') contain 0.05 to 0.5% camphor, while camphorweed (''Heterotheca'') contains some 5%. A major source of camphor in Asia is camphor basil (the parent of African blue basil). Camphor can also be synthetically produced from oil of turpentine. The compound is chiral, existing in two possible enantiomers as shown in the structural diagrams. The structure on the left is the naturally occurring (+)-camphor ((1''R'',4''R'')-bornan-2-one), while its mirror image shown on the right is the (−)-camphor ((1''S'',4''S'')-bornan-2-one). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schinia Saturata
''Schinia saturata'', the brown flower moth, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1874. It is found in the United States from south Texas to South Dakota, southeast Arizona and from Florida to South Carolina. The wingspan is about 25 mm. There is one generation per year. The larvae feed on ''Heterotheca subaxillaris ''Heterotheca subaxillaris'', known by the common name camphorweed, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of the United States (from California to Massachusetts) as well as Mexico an ...'' and '' Pityopsis graminifolia''. External links * * Schinia Moths of North America Moths described in 1874 {{Heliothinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schinia Lynx
''Schinia lynx'', the lynx flower moth, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1881. It is found in North America from Wisconsin, southern Ontario, Quebec and Maine, south to Florida and Texas. Records include Colorado, Iowa, Kansas, Nebraska, New York, Maryland, Oklahoma and Oregon. There is one generation per year. The larvae feed on ''Erigeron'' and ''Heterotheca subaxillaris ''Heterotheca subaxillaris'', known by the common name camphorweed, is a North American species of flowering plant in the family Asteraceae. It is widespread across much of the United States (from California to Massachusetts) as well as Mexico an ...''. References * * * Schinia Moths of North America Moths described in 1852 {{Heliothinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
