Corticioid species (Basidiomycotina, Aphyllophorales) from Colombia II

26 species are reported as new for Colombia of which Aleurocystis habgallae, Amaurodon viridis, Amylocorticium africanum, Brevicellicium allantosporum, Hyphodontia alutacea, H. orasinusensis and Leifia flabelliradiata are new to South America.Hypochniciellum luteolum Hjortstam & Ryvarden and Radulodon venustum Hjortstam & Ryvarden are described as new.Keys are provided for tropical species of Amylocorticium, South American species of Brevicellicium and all species in Candelabrochaete and Hypochniciellum.* Aleurodiscus mirabilis (Berk.& M. A. Curtis) Hohn.Specimen: 15999.Originally described from Cuba, this species has a pantropical distribution.For a description see Nufiez and Ryvarden (1997).* Amaurodon viridis (Alb.& Schwein.:Fr.)J. Schrot.Specimens: 16013, 16029.Not previously reported from South America.The species is better known as Tomentella chlorina (Massee) G. Cunn.The temperate distribution was shown by KOljalg (1996).It is further known from Australia (Tasmania), the type locality for Thelephora viridis Berk.and Hypochnus chlorinus Massee.Malengon (1952) also reported it from Tunisia as Caldesiella viridis (Alb.& Schwein.)Pat.We have also found the species in Venezuela (Estado Bolivar, Las Nieves, Ryvarden 37750, O), where it was rather common and occurred with Tomentellago aeruginascens Hjortstam & Ryvarden (second known collection) and Amaurodon hydnoides Koljalg & Ryvarden (type locality).*Amylocorticium africanum Hjortstam Specimen: 15916.Previously known only from Africa and recorded several times in Malawi, Kenya, and Tanzania.Boidin and Lanquetin (1995) reported it from Ethiopia.There are no other species in the genus as yet recorded in South America.Amylocorticium africanum should be easy to recognize by its cream-coloured hymenophore with a distinct and byssoid subiculum and by its suballantoid spores with a pale blue amyloid reaction.Key to tropical species of Amylocorticium Pie: Gystidia aDSent she cai Ci OW eR carters th ees eaten me ae 2 Loh, Cystidia Present oi.50a ies ek Fi iid ei toa to) 0 aN Gk ie cea ea eee a iS Hymenophore whitish, spores almost allantoid, usually 6-7 x (1.75--) 2-2.5 wm.Morocco and New Zealand...................ccccceeeeeeees eee cebennense 2. _Hymenophore pale yellowish or brownish, spores ellipsoid, 4.5-5.5 wm long, becoming dextrinoid.India ................ ccc ceceeeeeeeneeeees indicum 3. Cystidia as vesicular protuberances on the hyphae, spores suballantoid 5.5-6.5(-7)x 1.5-2 um.Africa, South America ................0..... africanum 3.With other kind of cystidia, sometimes septate, projecting above the ba-SILA.302 eek a cot ke ee ea a Eid ks a ON Pipes Lae ee ele 4 Hjortstam, Kurt and Ryvarden, Leif.2000."Corticioid species (Basidiomycotina, Aphyllophorales) from Colombia II."