focus on... Recently described new Peperomia species
It appears that the extending scientific interest in the genus Peperomia during the last two decades is resulting in the publication of a substantially higher number of new taxa.

After the publication of 3 new Peperomia species in 2006 (P. ankaranensis, P. erythrocaulis, P. richardsonii) and another 3 in 2007 (P. cuchumatanica, P. linaresii, P. moralesii), the year 2008 yielded 11 new taxa (P. ciliato-caespitosa, P. chutanka, P. dolabriformis var. lombardii, P. dolabriformis var. multicaulis, P. gracilispica, P. kjellii, P. magnifoliiflora, P. parcipeltata, P. pinoi, P. pseudophyllantha, P. sagittata).
In 2011 not less than 29 new species were described (from Mexico: P. albonervosa, P. basiradicans, P. cavispicata, P. elatior, P. exclamationis, P. occulta, P. putlaensis, P. questionis,P. tepoztecoana; from Peru and Bolivia: P. ayacuchoana, P. cerrateae, P. gigantea, P. jalcaensis, P. klopfensteinii, P. ocrosensis, P. pseudoverruculosa, P. pugnicaudex, P. purpureonervosa, P. querocochana, P. radiatinervosa, P. wernerrauhii, P. umbrosa; from Belize and Costa Rica: P. paramuna, P. toledoana, P. unifoliata); from Colombia: P. rivulamans.
In 2012 a series of window-leaved succulent species were described (P. callana, P. ciezae, P. erosa, P. ferreyrae var. musifolia, P. maijeri, P. mantaroana, P. mathieui, P. mitoensis, P. palmiformis, P. samainiae, P. selenophylla).
Two Brazilian species were described in 2013 (P. diamantinensis, P. cruzeirensis).
From Mexico three species were described in 2015 (P. chazaroi, parastriata, P. vazquezii) while from Brazil two new species were described in 2016 (P. epipremnifolia, P. sulbahiensis).
In 2017 were described from Thailand: P. heptaphylla, P. masuthoniana, P. multisurcula and P. sirindhorniana. From Mexico P. tubericordata was described and from the Brazilian island Trindade P. segregata. Two lithophytic new species from Mexico were described early 2018: P. asarifolioides and P. pseudoasarifolia. In the course of the same year P. ekakesara from India was published, followed by P. albopilosa and P. pseudoserratirhachis from Brazil. The harvest of the year continued with five new species from Mexico (P. castilloi, P. nopalana, P. trichobracteata, P. xalana and P. zongolicana . With P. physostachya from Ecuador and P. sphaerostachya from Colombia plus P. emarginatifolia and P. vellarimalica from India the total number of new species for 2018 reached 14.
During 2019 were published P. aggregata and P. spiritus-sancti from Brazil. In 2020 an amazing number of 40 new taxa was published. This is mainly due to the 32 new species presented in volume II of the Flora Mesoamericana. In addition, one novelty was described from Brazil, three from Madagascar, two from Mexico and two from Peru
One has to take into account that quite some time can pass between the actual discovery of a new species and the eventual publication of its description. First of all there is the need to search for and to compare with possible existing herbarium material. Related data have to be gathered, referenced and illustrations have to be made. After the manuscript is written and submitted, the peer reviewing process might lead to additions or modifications before the protologue is finally approved for publication in a scientific journal. We estimate that at this very moment the manuscripts of about 20 new species descriptions are awaiting their finalization.