Sometimes, the notion of the morphological lemma is useful, although it has no direct relation to the tectogrammatical level.

A node's morphological lemma (m-lemma) is the basic form of a word (e.g. the nominative singular, the infinitive) that is assigned to words (word forms) at the morphological level.

The actual lemmas, which represent the output of the morphological parser, can contain other information, too, apart from the specification of the basic/default form, e.g. technical suffixes characterizing semantic or word-formation features of a given lexical unit: ( for example: "vazba-2_^(spojení)", "protiprávnost_^(*3ý)". These suffixes can be ignored here; in the examples above, the m-lemmas are "vazba" and "protiprávnost" respectively.