Lamiaceae and Verbenaceae Week: Lamiaceae, Mentha royleana subsp. royleana from Manali

[Gurcharan Singh]

Mentha royleana Benth. in Wall., Pl. As. Rat. 1: 29. 1830

syn: Mentha longifolia subsp. royleana (Wall. ex Benth.) Briq.; Mentha sylvestris var. royleana Hook.; 

Often identified as M. longifolia this Himalayan plant is distinct in its leaves with 2-15 mm long petioles, leaves covered with prominent indumentum and 1.5-2 mm long calyx.

Photographed from Manali 

--
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089
http://people.du.ac.in/~singhg45/