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Geaster
''Geastrum'' (orthographical variant ''Geaster'') is a genus of puffball-like mushrooms in the family Geastraceae. Many species are known commonly as earthstars. The name, which comes from ''geo'' meaning ''earth'' and meaning ''star'', refers to the behavior of the outer peridium. At maturity, the outer layer of the fruiting body splits into segments which turn outward creating a star-like pattern on the ground. The inner peridium is called a spore sac. In some species, the outer peridium splits from a middle layer, causing the spore sac to arch off the ground. If the outer peridium opens when wet and closes when dry, it is described as hygroscopic. In some species, the inner peridium is borne on a stalk or pedicel. The columella is a column-like clump of sterile tissue found inside the inner peridium. The network of fertile tissue inside the inner peridium, the capillitium, arises from the columella And is where basidia and basidiospores are produced. The mouth in most species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geastrum Triplex
''Geastrum triplex'' is a fungus found in the detritus and leaf litter of hardwood forests around the world. It is commonly known as the collared earthstar, the saucered earthstar, or the triple earthstar—and less commonly by the alternative species name ''Geastrum indicum''. It is the largest member of the genus ''Geastrum'' (or Geastrum, earthstar fungi) and expanded mature specimens can reach a tip-to-tip length of up to . Immature basidiocarp, fruit bodies are spherical—somewhat resembling puffballs with pointed beaks—and are partially or completely buried in the ground. As the fungus matures, the outer layer of tissue (the exoperidium) splits into four to eight pointed segments that spread outwards and downwards, lifting and exposing the spherical inner spore sac. The spore sac contains the gleba, a mass of spores and fertile Mycelium, mycelial tissue that when young is white and firm, but ages to become brown and powdery. Often, a layer of the exoperidium splits ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |