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Search for "STIJVE T.": 2 articles found.
STIJVE T. (1997): Close encounters with Clathrus ruber, the latticed stinkhorn. [Clathrus ruber, multi-element analysis] Czech Mycology 50(1): 63-70 (published: 29th September, 1997)
abstract
Considerable variation in the height of the carpophores of Clathrus ruber Mich.: Pers. was observed, ranging from a mere 8 cm for Spanish and French collections to more than 20cm among the Clathri growing in a park at Ouchy (Lausanne) on Lake Geneva. Chemical investigation of collections from that site confirmed that C. ruber accumulates manganese, just as other stinkhorns do. In all probability, this metal plays a role in the biochemistry of the fungus, notably in the enzymatic liquefaction of the gleba with simultaneous formation of odorous compounds. Clathrus eggs were subjected to multi-element analysis in which the gelatinous outer layer, the embryonal receptaculum and - gleba were separately investigated. The gelatinous layer proved most rich in potassium, calcium, manganese and iron. Calcium undoubtedly stabilizes the polysaccharide gel protecting the embryonal carpophore from drying out during the growth of the egg. The superior concentrations of the other elements (comparedtothose in the developing carpophore) suggest a placenta-like function of the gelatinous layer. The significance of the various elements in the biology of the Clathrus is briefly discussed.
STIJVE T. (1995): Worldwide occurrence of psychoactive mushrooms - an update. [Psychoactive mushrooms, psilocybin, ibotenic acid, recreational use] Czech Mycology 48(1): 11-19 (published: 16th May, 1995)
abstract
An update is given on there corded psilocybin - and ibotenic acid containing mushrooms on a worldwide scale. Many new psilocybian species have been discovered during the last 15 years, including representatives of the genera Psilocybe, Panaeolus, Inocybe, Gymnopilus and Pluteus, whereas only Amanita regalis was identified as a new and potent source of ibotenic acid. Recreational use of psychoactive mushrooms has spread from the USA to Europe, but here, like anywhere else, it remains a marginal phenomenon. The mushrooms commonly used are limited to a few species: in Europe it is almost invariably Psilocybe semilanceata, whereas in the USA Ps. cubensis, is widely used. Locally, Ps. stuntzii and Panaeolus subbalteatus have also gained some popularity. Misuse in South America or Asia is virtually unknown, inspite of the easy availability of psychoactive fungi. The trade in “magic mushrooms” e.g. Ps. cubensis and Copelandiacyanescens on the Thai island of Koh Samui, or in Indonesian Bali only caters to European and American tourists. Finally, young people and members of the drug-using subculture in Australia and New Zealand have also become aware of the psychoactive fungi growing in their respective countries
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