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Palafoxia Arida
''Palafoxia arida'' is a species of flowering plant in the Asteraceae, aster family, known by the common names desert palafox and Spanish needle. Distribution It is native to the Mojave Desert and Sonoran Desert ecoregions of California, the Southwestern United States, and northwestern Mexico. Description ''Palafoxia arida'' is an annual herb producing an erect, branching, glandular stem. The rough-haired leaves are linear or lance-shaped and may exceed 10 centimeters long. The inflorescence is an array of up to 40 Head (botany), flower heads. The cylindrical heads are about 2 to 3 centimeters long, lined with long, pointed bract, phyllaries, and bearing up to 40 pink or white tubular disc florets. The fruit is an achene over a centimeter long including the Pappus (flower structure), pappus. Varieties There are two varieties: *''Palafoxia arida'' var. ''arida'' — desert needle, desert palafox. *Palafoxia arida var. gigantea, ''Palafoxia arida'' var. ''gigantea'' — giant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autonym (botany)
In botanical nomenclature, autonyms are automatically created names, as regulated by the ''International Code of Nomenclature for algae, fungi, and plants'' that are created for certain subdivisions of genera and species, those that include the type of the genus or species. An autonym might not be mentioned in the publication that creates it as a side-effect. Autonyms "repeat unaltered" the genus name or species epithet of the taxon being subdivided, and no other name for that same subdivision is validly published (article 22.2). For example, ''Rubus'' subgenus ''Eubatus'' is not validly published, and the subgenus is known as ''Rubus'' subgen. ''Rubus''. Autonyms are cited without an author. The publication date of the autonym is taken to be the same as that of the subdivision(s) that automatically established the autonym, with some special provisions (the autonym is considered to have priority over the other names of the same rank established at the same time (article 11.6)). A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |