Nature and development of plants . R FORMS OF ASCOMYCETES forming a cup-like structure resembling that shown in Fig. section through one of these cups reveals the asci intermingledwith hyphae, also called paraphyses, in the form of a layer orstratum. Such an association of spore-bearing organs and para-physes is called a hymenium. The spores are discharged to con-siderable distances, owing to the accumulation of fluids in theasci which finally rupture at their apices. In some forms, theentire ascus is discharged with an audible explosion, owing tothe swelling and rupture of the supportin
Nature and development of plants . R FORMS OF ASCOMYCETES forming a cup-like structure resembling that shown in Fig. section through one of these cups reveals the asci intermingledwith hyphae, also called paraphyses, in the form of a layer orstratum. Such an association of spore-bearing organs and para-physes is called a hymenium. The spores are discharged to con-siderable distances, owing to the accumulation of fluids in theasci which finally rupture at their apices. In some forms, theentire ascus is discharged with an audible explosion, owing tothe swelling and rupture of the supporting hyphae. The brightscarlet cups of Sarcoscypha, common in the spring on decayingsticks and the gray cups of Peziza growing upon the groundand decaying wood, are familiar examples of the order. 92. Order h. Helvellales.—These are fleshy forms in whichthe hymenium is exposed over the surface of a variously shapedascocarp, as shown in the common genera illustrated in The morel or Morchclla, in which the hymenium is spread. mmmm umm I ; PFjj J i A
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