| Name | Endocronartium harknessii Y. Hiratsuka |
| Authorship | Y. Hiratsuka |
| Rank | Species |
| Placed in | Endocronartium |
| Citation | 1969 Canad. J. Bot. 47 (9): 1493 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Endocronartium harknessii Y. Hiratsuka |
| Identification made in | [no date] (3) |