PROBLEM TO BE SOLVED: To enable a ROPS to be included in a relatively simple structure even when its grass collection container's specification is a high-dump type one or low-dump type one.SOLUTION: A riding type mower comprises a ROPS base 6 for fitting and supporting a ROPS at a rear part of a traveling machine body. The ROPS base 6 is formed with ROPS fitting parts 61a, 60c, 60d to which any of a high-dump ROPS to which a grass collection container compliant to a high-dump specification is to be fitted and a low-dump ROPS to which a grass collection container compliant to a low-dump specification is to be fitted can be detachably attached in an alternative manner.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2020,JPO&INPIT【課題】集草容器がハイダンプ式、及びローダンプ式、の何れの仕様であっても、比較的簡単な構造でロプスを備えられるようにする。【解決手段】走行機体の後部に、ロプスを取付支持するためのロプスベース６を備え、ロプスベース６に、ハイダンプ仕様の集草容器を取り付けるハイダンプ用ロプスと、ローダンプ仕様の集草容器を取り付けるローダンプ用ロプスと、のいずれをも、択一的に脱着可能なロプス取付部６１ａ，６０ｃ，６０ｄが形成されている。【選択図】図７
