The living members of the genus Equisetum are divided into three distinct lineages, which are usually treated as subgenera. The name of the type subgenus, Equisetum, means "horse hair" in Latin, while the name of the other large subgenus, Hippochaete, means "horse hair" in Greek. Hybrids are common, but hybridization has only been recorded between members of the same subg… WebMar 2, 2024 · The strobilus of Equisetum has been for a long time a puzzle in terms of homology and morphological evolution. The different types of reproductive morphologies found in fossil relatives of Equisetum that go back to the Permian (c. 290 million-years ago) had created a stalemate in the interpretation of the homology of the strobilus (reviewed …
flawonoidy wykł3
WebThe strobilus consists of numerous small flower-shaped bracts (sporophylls) on short stalks, with spore-bearing structures called sporangia on the lower surfaces. The stems in most species contain large amounts of silica, and the plants were used historically for scrubbing and cleaning. NON-CHEMICAL CONTROL WebApr 1, 1990 · Characterization of phenolic constituents in hazelnut kernels. Prenylated acetophenones from the roots of Calendula officinalis and their anti-inflammatory activity. … griffith regional funerals
Selaginella: Habitat, Features and Reproduction - Biology Discussion
WebOne of the oldest lepidodendrid cones is Lepidostrobus oldhamius, known from Lower and Middle Pennsylvanian deposits in both North America and Great Britain. Specimens range from 2–6 cm in diameter and exceed 30 cm in length. WebAug 19, 2024 · In some Equisetum species, there are two different types of shoots produced by the sporophyte: vegetative shoots that perform photosynthesis and reproductive shoots that form strobili and undergo meiosis. In other species, the strobilus is formed at the apex of a photosynthetic shoot. Vegetative Shoots WebNov 28, 2024 · This is the strobilus of Equisetum telmatiea. Early in reproductive stems can be seen along ditches. The function of these stems is to produce spores. What are strobili in horsetails? Strobili form at the uppermost portion of fertile branches and are composed of sporophylls bearing a single sporangium. Dispersed by wind, the small spores ... fifa verdict on bafana