. Des champignons ; leur nature et les utilisations. Les champignons. 36 LES CHAMPIGNONS.. JPia. lS.âJsterosporium Hoff- un grand point de distinction entre ceux-ci et le précédent est l'absence de toute véritable périthèce, les spores étant pro- duits dans une sorte de récipient fallacieux, ou d'une sorte de stroma. Les spores sont, en règle générale, plus grand et beaucoup plus attrayant que dans Sphceronemei, et, dans certains cas, sont soit très bien, ou très curieux. À ce titre on peut citer le multi- spores septées des Goryneum ; le tri-émettre de spores de Astero- sporium ; les curieux de spores à Pestalozzia ; le doublement de spores à crête

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. Fungi; their nature and uses. Fungi. 36 FUNGI.. JPia. lS.âJsterosporium Hoff- One great point of distinction between these and the preceding is the absence of any true perithecium, the spores being pro- duced in a kind of spurious receptacle, or from a sort of stroma. The spores are, as a rule, larger and much more attractive than in Sphceronemei, and, in some instances, are either very fine, or very curious. Under this head we may mention the multi- septate spores of Goryneum; the tri-radiate spores of Astero- sporium; the curious crested spores of Pestalozzia; the doubly crested spores of Dilophospora; and the scarcely less sin- gular gelatinous coated spores of Cheiro- spora. In all cases the fructification is abundant, and the spores frequently ooze out in tendrils, or form a black mass above the spurious receptacle from which they issue.* Toeulacei.'âIn this order there seems at first to be a considerable resemblance to the Dematiei, except that the threads are almost obsolete, and the plant is reduced to chains of spores, without trace of perithe- cium, investing cuticle, or definite stroma. Sometimes the spores are simple, in other cases septate, and in Sporochisma are at first produced in an investing cell. In most cases simple threads at length become septate, and are ultimately differentiated into spores, which separate ;:t the joints when fully mature. Cjjomacel-âOf far greater interest are the Coniomycetous parasites on living plants. The present order includes those in which the spore + is reduced to a single cell; and here we may observe that, although many of them are now proved to be imperfect in themselves, and only forms or conditions of other fungals, we shall write of them here without regard to their duality. These originate, for the most part, within the tissues of living plants, and are developed outwards in pustules, which burst through, the cuticle. The mycelium penetrates the inter- * Berkeley, M. J., "Introduction, Crypt. Bot.&qu

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