Since the inception of the circle, about 372 extensive and intensive survey tours (each 20-70 days duration) and 15 multidisciplinary expeditions have been undertaken to the various regions falling under its jurisdiction. As a result of these efforts many areas are fairly to well explored. Out of about 93 districts and 2 union territories under this circle, about 50 districts, Chandigarh and Delhi are well explored (>70%) while about 26 districts are explored (40-70%). About 17 districts are being explored i.e. the survey is below 40%. The state-wise explorations and the status of survey is shown in the table and map.
All these explorations have resulted in collection of ca 1,07,380 field numbers (including 9,620 numbers of non-vascular cryptogams).
Scientist-in-Charge, Botanical Survey of India, Northern Regional Centre, 192, Kaulagarh Road P.O. – KDMIPE Dehradun – 248 195 Uttarakhand Tel. : (0135) 2755478, 2753433