| ↑ | 571.2 | plant and microrganism physiology |  → 581 ≈ S.SPEC.35.CA |
| ↑ | 572.2 | biochemistry of plants and microorganisms | → 581 |
| ↑ | 576.5 | general genetics | → 572.8 581.3 591.3 599.93 ≈ S.SPEC.29.BB |
| ↑ | 579.53 | | → 581.2 |
| ↑ | 581.943 | plants of Germany and Central Europe | → 581.9494 |
| ↑ | 581.9494 | plants of Switzerland | → 581.943 |
| ↑ | 615.321 | plant-derived drugs, phytotherapy, pharmacognosis | → 581.634 ≈ S.SPEC.22.AF |
| ↑ | 630 | agriculture in general | → 338.1 343.076 580 ≈ S.SPEC.21.AE |
| ↑ | 631.52 | seed and variety production, agricultural genetics | → 581.3 |
| ↑ | 632 | plant pathology, biological and chemical control | → 581 668.6 ≈ S.SPEC.34.HA |
| ↑ | 635.9 | floriculture, ornamental plants | → 582.13 712 ≈ S.FLORE.B |
| ↑ | S.FLORE.C | Italian flora | ≈ 581.945 |
| ↑ | S.FLORE.D | vegetation, European flora | ≈ 581.9 |
| ↑ | S.FLORE.E | vegetation, European flora | ≈ 581.9 |
| ↑ | S.FLORE.F | Asian flora | ≈ 581.95 |
| ↑ | S.FLORE.G | systematic botany | ≈ 580.12 |
| ↑ | S.FLORE.H | European flora | ≈ 581.94 |
| ↑ | S.FLORE.I | North and East Europe flora | ≈ 581.94 |
| ↑ | S.FLORE.L | African flora | ≈ 581.96 |
| ↑ | S.FLORE.M | North American and Persian flora | ≈ 581.97 581.955 |
| ↑ | S.FLORE.N | South American flora | ≈ 581.98 |
| ↑ | S.SPEC.20.AB | botanical gardens, history of botany | ≈ 580.73 580.9 |
| ↑ | S.SPEC.20.AC | botanical treatises | ≈ 580 |
| ↑ | S.SPEC.24.AH | botanical ecology, phytogeography, geobotany | ≈ 581.7 581.9 |
| ↑ | S.SPEC.25.AL | bryology, mosses | → S.SPEC.44.AA ≈ 586 |
| ↑ | S.SPEC.26.AN | lichenology | → S.SPEC.44.AA ≈ 586 |
| ↑ | S.SPEC.28.AR | palinology, pollens | ≈ 582.0463 |
| ↑ | S.SPEC.41.FB | Latin America | ≈ 581.98 |
| ↑ | S.SPEC.41.FC | Central America | ≈ 581972 972 |
| ↑ | S.SPEC.44.AA | cryptogamae | → S.SPEC.25.AL S.SPEC.26.AN ≈ 586 |
