Abstract
Cheiromyces lignicola sp. nov. is described and illustrated from a freshwater stream in Hong Kong. The species is characterized by chiroid, yellowish brown, distoseptate conidia that are composed of 3–5 arms, each terminating apically in an inflated cell. The developmental stages of the inflated apical cell are illustrated. Cheiromyces lignicola is compared with other Cheiromyces species, and other taxa that produce chiroid conidia with inflated apical cells. The taxonomic disposition of C. cubensis and C. wrightii in Cheiromyces is also discussed. Keys to species of Cheiromyces and to 26 anamorphic genera that produce chiroid conidia are provided.