836 



MEDICAL MYCOLOGY 



ACLADITJM 



Acladium Link, Mag. Ges. Naturf. Frennde Berlin 3: 11, 1809. 

 The type species is Acladium conspersum Link (Fig. 130). 



In his Ohservationes, Link described Acladmm as follows: Thallus e floccis caespitosis 

 erectis, simplicihus aut sulyramosis, septatis. Sporidia inspersa. Genus varium, floccis erectis 

 caespitosi simpliciius a/at suhrannosis distinguendum. Omnes species caespitulos formant 

 initio parvos rotundos, dein dilatatos ac dijfusos. Fortassis is plura genera dividendum. 

 He treats four species: A. conspersmn, A. herharv/m (DermatiMm herharum Pers.), A. capi- 

 tatwm, and A. microspcrmit7n. 



In Link's revision of the Fungi of Willdenow's edition of Linne's Species Plantarum 6: 

 37, 1824, only two of tlie original species are retained, A. herbani/m having been transferred 



Fig. 130. — Acladium conspersum Link. (After Bonorden.) 



Fig. 131. — Acladium Castellanii. (After Castellani 1916.) 



to Cladosporium and A. capitatiim> to his Aspergilhis roseus. Hence, eitlier A. conspersum 

 or A. microsperum must be chosen as the type. Since the former was evidently the best known, 

 it should be taken as the type. Bonorden, Saccardo and Lindau have followed this concept. 



Hyphae repent; conidiophores erect, unbranched, septate or not; conidia 

 lateral, sessile, unicellular, or hyaline. 



A single pathogenic species has been referred here. It has been so little 

 studied morphologically that its position here is uncertain. 



Acladium Castellanii Pinoy apud Castellani, Brit. Med. Jour. 2; 486, 1 

 pL, 1916. 



Pseudomicrosporon Castellanii Craik, Jour. Trop. Med. Hyg. 26: 184, 185, 

 1923. 



