18 GENERAL CONSIDERATIONS 



Fig. 1. Cystidia — H. calyptraeformis: a, pleurocystidia; b, cheilocystidia. H. cuspi- 

 datus: c, pleurocystidia: d, cheilocystidia. H. turundus var. turundus: e, 



pleurocystidia. H. turundus var. sphagnophilus: f, pleurocystidia; g, cheilocys- 

 tidia. //. appalachianensis: h, pleurocystidia; i, cheilocystidia. 



