Economically it is a very important family. Important Plants of Lamiaceae Family. PFCs are unique to the Lamiales and their distribution, origin and phylogeny are not well understood.Conspicuous, 2 per cyme, broadly ovate to rotund, spinose-dentate, subsessile, green or straw-coloured, equalling or overtopping calyx.
Source of thymol also used in medicine. Stimulant and carminative. Leaf juice used for cough, cold and fever.
Depending on the position of Peltanthera (depending in turn on the kind and number of genes and taxa analysed) a single, a double (the most probable scenario) or a triple origin appears conceivable.Calceolariaceae Gesneriaceae Inflorescence Lamiales Peltanthera Plantaginaceae Sanango Scrophulariaceae, Stilbaceae cyme pair-flowered cyme raceme thyrse. However, molecular evidence is ambiguous. 4 (1), Inflorescence an elongated thyrse of decussate, 1- or 2-flowered cymes.From the exclusive occurrence of PFCs in the Lamiales and the proximity of the respective taxa in molecular phylogenies it may be expected that PFCs have originated once, representing a synapomorphy for this group of taxa and fading out within the Plantaginaceae.
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