 <unk> is a term used to refer to the tissue or tissues containing the hymenium of an ascomycete fruit body . The ectal excipulum ( outer tissue layer ) is thin ( 20 – 30 µm thickness ) , made of a tissue type known as <unk> <unk> , consisting of more or less parallel hyphae all in one direction , with wide <unk> and non @-@ thickened walls . The medullary <unk> ( middle tissue layer ) is thick ( 200 – 600 µm ) and made of textura <unk> , a tissue layer made of irregularly interwoven hyphae with distinct spaces between the hyphae . The asci ( filamentous structures in which the ascospores develop ) are cylindrical with gradually tapering bases , eight @-@ spored , and measure 240 – 280 by 12 – 15 µm . The ascospores have ellipsoidal to roughly cylindrical shapes , usually with blunt ends , and measure 19 – 22 by 10 – 12 µm . They have smooth surfaces and usually contain two large oil drops . The paraphyses ( sterile , filamentous hyphae present in the hymenium ) are cylindrical , 2 – 3 µm thick , barely enlarged at their apices , straight , and mostly unbranched above . They may sometimes anastomose , but do not form a conspicuous network . The paraphyses contain numerous red granules . 
