This was my most prized catch of 2013 from above Tungnath in Uttarakhand on
June 1, I had worked on Iris kemaonensis Wall. ex D. Don (I. kumaonensis in
most earlier Indian Books). and studied its confusion with I. hookeriana
in most Indian Floras including Hooker's Flora of British India. The two
species are very distinct at least in two major features:
1. I. hookeriana: aerial stems distinct longer than 10 cm; perianth tube
less than 2 cm long.
2. I. kemaonensis: Aerial stems highly reduced, not longer than 10 cm
(longer stemed I. kemaonensis var. caulescens Baker is now considered as
synonym of I. hookeriana); perianth tube 5-8 cm long.
In 1972-73 I had studied nearly 700-800 herbarium specimens in various
Indian Herbaria including the three major ones Calcutta, Dehradun and
Lucknow and found that more than 90 % of specimens identified as I.
kumaonensis actually belonged to I. hookeriana, and that former has much
more restricted distribution than I. hookeriana, which is more widely
distributed in W. Himalayas. I. kemaonensis is mostly restricted to areas
of Uttarakhand and eastwards.
I am uploading two photographs instead of one, to bring out the feature
of a very long Perianth tube.
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://www.gurcharanfamily.com/
http://people.du.ac.in/~singhg45/
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