Claimed natural history specimens collected or identified by Walo Koch
| Scientific Name | Country | Institution | Date |
| Dianthus carthusianorum L. | Switzerland | ETHZ | 1936-06-16 00:00:00 |
| Dianthus carthusianorum L. | Switzerland | ETHZ | 1955-07-15 00:00:00 |
| Gentianella germanica (Willd.) Börner | Switzerland | ETHZ | 1943-08-17 00:00:00 |
| Crepis froelichiana Froel. subsp. froelichiana | Switzerland | ETHZ | 1934-05-21 00:00:00 |
| Crepis froelichiana Froel. subsp. froelichiana | Switzerland | ETHZ | 1950-05-28 00:00:00 |
| Crepis froelichiana Froel. subsp. froelichiana | Switzerland | ETHZ | 1939-05-27 00:00:00 |
| Pulicaria vulgaris Gaertn. | Switzerland | ETHZ | 1931-01-01 00:00:00 |
| Solidago canadensis L. | Switzerland | ETHZ | 1931-01-01 00:00:00 |
| Leontopodium alpinum Cass. | Switzerland | ETHZ | 1953-07-16 00:00:00 |
| Leontopodium alpinum Cass. | Switzerland | ETHZ | 1953-07-16 00:00:00 |