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Tenth leaf digitate

These features refer to the tenth leaf stage. The tenth leaf is the tenth true leaf produced after the cotyledons. On seedlings with alternate or spirally arranged leaves it is just simply the tenth leaf produced.  On seedlings with opposite leaves it is one of the leaves in the fifth pair of true leaves produced.  On seedlings with whorled leaves it will be one of the leaves in the appropriate whorl; e.g. if there are four leaves in each whorl then the tenth leaf will be one of the leaves in the third whorl.

This refers to those compound leaves which are digitately compound.  Features S46-S50 are not applicable to leaves in this category.


S51 with four or more leaflets from the centre

This category covers digitately compound leaves where the leaflets arise at the same central point and radiate like the blades of a windmill.