Signs and Measures
SIGNS AND MEASURES
| ♂ | male |
| ♀ | female |
| ⚥ | hermaphrodite |
| 0 | absent |
| × | indicates hybrid plant or joins names of parents |
| = | equal to |
| > | more than, greater than |
| < | fewer than, less than |
| ± | more or less, approximately |
| * | naturalised taxon |
| † | genus or family represented by native species only and treated in Vol. 1 or mentioned below key |
| ζ | discussed in note below key |
Metric measures are used, with the usual abbreviations. Numbers connected by the multiplication sign refer to length by breadth. Numbers enclosed in brackets indicate dimensions beyond the usual range, e.g. 10-12-(18) × 5-7-(11) mm.
