Collecting source
| Code | Term | Description |
|---|---|---|
| 10 | Wild habitat | |
| 11 | Forest/woodland | |
| 12 | Shrubland | |
| 13 | Grassland | |
| 14 | Desert/tundra | |
| 20 | Farm | |
| 21 | Field | |
| 22 | Orchard | |
| 23 | Garden | |
| 24 | Fallow | |
| 25 | Pasture | |
| 26 | Store | |
| 30 | Market | |
| 31 | Town | |
| 32 | Village | |
| 33 | Urban area | Around city |
| 34 | Other exchange system | |
| 40 | Institute/research organization | |
| 99 | Other | Specify in descriptor 2.19, Collector’s notes |