21. The stipe cuticle is made of clusters of cystidia similar to those found in the hymenium . 22. The hyphae of the subhymenium ( a layer of tissue directly under the hymenium ) are interwoven. 23. It has a bright yellow outer surface, but the hymenium becomes develops greenish tints in age. 24. The third layer is the fertile, spore-bearing surface, the brownish-black hymenium . 25. The excipulum is the cup shaped tissue that holds the hymenium , asci, in the apothecium. 26. This feature becomes less visually prominent as the hymenium matures and neighboring basidia expand and become crowded. 27. The hymenium ( fertile, spore-bearing surface ) is 6 10 spores are cream coloured. 28. Pseudocystidia ( sterile structures arising deep in the subhymenium and protruding into the hymenium ) are rare. 29. The white, porous hymenium has a thickness of 1 2 mm and turns brown when bruised. 30. The position of the hymenium is traditionally the first characteristic used in the classification and identification of mushrooms.
