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Tenth leaf if compound terminal leaflet

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.

Compound leaves are either pinnate or digitate.  These features refer to pinnately compound leaves only; digitately compound leaves are included under S51.

S47 with a terminal leaflet present S48 with a terminal leaflet absent