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Aphanes Australis
''Aphanes australis'' (syn. ''Alchemilla australis''), slender parsley-piert, is a sprawling, downy plant that is found in acid grassland and on bare ground throughout western Europe and which has spread to other parts of the world with agriculture. Description Slender parsley-piert is a pale green winter Annual plant, annual herbaceous plant, herb with prostrate, branched, leafy stems up to 15 cm long. The leaves are alternate and spiral around the stem, with a short petiole and large, deeply-lobed stipules at the base. They are about 0.5 cm long, broadly ternate with deeply lobed leaflets, and sparsely hairy. An important identification feature is the leaf base, which is usually wiktionary:cuneate, cuneate, narrowing gradually into the stalk. The inflorescences are wiktionary:glomerule, glomerules of 4-10 flowers nestled within the stipules, opposite the base of each leaf. The flowers are up to 2 mm long, pale green, sparsely wiktionary:pubescent, pubescent and have 4 sepa ... [...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. Globally, 6% of all plant species and 15% of herbaceous plants (excluding trees and shrubs) are annuals. The annual life cycle has independently emerged in over 120 different plant families throughout the entire angiosperm phylogeny. The evolutionary and ecological drivers of the annual life cycle Traditionally, there has been a prevailing assumption that annuals have evolved from perennial ancestors. However, recent research challenges this notion, revealing instances where perennials have evolved from annual ancestors. Intriguingly, models propose that transition rates from an annual to a perennial life cycle are twice as fast as the reverse transition. The life-history theory posits that annual plants are favored when adult mortality is higher than seedling (or seed) mortality, i.e., annuals will dominate environments with dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
