Tobacco black death is one of the major tobacco diseases in the Weifang Region of Shandong Province. The results of experiments on culture isolation, morphologic characteristics, pathogenicity and host range of the pathogen showed that the pathogenic fungus of this disease is a new forma of Colletotrichum capsici, C. capsici (Sdy) Bulter & Bishy f. nicotianae G.M. Zhang & Z. Jiang f.nov. Colinia cicularibus in medio PDA. Marginibus regularibus 81mm (ad25°C) diam in 10 dies. Hyphis fertilibus, ramosae, septatae, chlamydospora formatio in hyphis adulta; conidomatibus acervulitis, 37.8-146.1 µm diametro; setaceae sparisis, bruneolis, erectis, ad apicem acuminatis, septatis 3-5; conidioporis cylindraeis, aseptatis, cellulis comidiogents phialibus; conidiis lunatae, ad apicem, hylinis unicellularae 16.2-24.3 x 3.5-6.2 µm. Appressoriis aterobrunneis, ellipticus, intactus peripheralis raro irregularibus 7.6-10.1 x 5.1-6.5 µm.