Ascoma ( ascocarp ) the fruiting body of most fungi of the phylum ascomycota , in which the asci are borne 子囊果：真菌中大部分子囊菌所具有的子实体，其上生有子囊。
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Most species occur only on a single host genus , but there were a few species , such as l . pinastri , which had a wide range of host and its ascocarps can appear on the needles of 16 kinds of haploxylon and diploxylon pines 多数种仅知在单寄主属上发生，但也有部分种能在多寄主上产果，如松针散斑壳( l pinastri )可危害16种单、双维管束松树。
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Most grow best and form pycnidia earlier on ma , and pda is slightly not fitful for pycnidia growth of the kind of fungi . none of the species can produce ascocarps in 60 days . esterase isoenzymes of 12 strains of rhytismataceae were studied by polyacrylamide gel electrophoresis and clustering analysis of upgma and 12 strains were classified into 4 groups when correlation coefficient is 3 . 1 结果表明大多数种在ma平板上菌落营养生长最好，产生分生抱子器及分生抱子的时间较早、能力较强； oa也是可选择的培养基之一：而p a较不适宜于该类菌物的营养生长和分生抱子器产生。
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The results showed that the nearer the relationship of the species , the more similar the zymograms . the zymograms difference between species in different genes is more obvious than ones in the same one . in addition , there is a certain difference between the zymograms of different strains of the same species from different ascocarps and places 结果表明，亲缘关系愈近的菌株其酶谱的相似性愈大，属间差异明显大于种间差异，同菌种的酶谱可因寄主、产地不同等而存一定差异。
