Page:Manual of the New Zealand Flora.djvu/309

Rh ordinal characters given in this book, or in other works on the flora. By so doing he will insensibly acquire a practical knowledge of the characters used in distinguishing the species and genera which will ultimately enable him to identify them for himself. In using the subjoined key to the New Zealand genera it must be remembered that the minute differences in the shape of the style-branches, so largely employed to separate the tribes from one another, can only be observed in the hermaphrodite florets, the style of tbe female florets being very similar throughout the order.

Heads with the florets all tubular and hermaphrodite, or with the marginal ones alone ligulate and female or neuter.