New gametophytic chromosome numbers for Lamiaceae from North-West India

The purpose of this study was to record gametophytic chromosome numbers for 30 species belonging to the family Lamiaceae from the regions of North-West India. During the investigations the accession of Stachys sericea was recorded to bear a gametophytic chromosome number of n=16; a new chromosome number for the taxa at the global level. Gametophytic chromosome numbers in three accessions of Mentha arvensis, Nepeta nervosa, and Scutellaria galericulata were recorded as n=12, n=7, and n=16 respectively for the first time from India. The chromosome numbers for 47 accessions belonging to 26 species were rereported for the taxa studied. The present study contributed four new chromosome numbers for the Indian taxa of Lamiaceae.