A review of Calypogeia (Marchantiophyta) in the eastern Sino-Himalaya and Meta-Himalaya based mostly on types
Author
Bakalin, Vadim A.
Botanical Garden-Institute, Vladivostok, Russia
https://orcid.org/0000-0001-7897-4305
vabakalin@gmail.com
Author
Klimova, Ksenia G.
Botanical Garden-Institute, Vladivostok, Russia
https://orcid.org/0000-0002-3229-1880
Author
Nguyen, Van Sinh
Institute of Ecology and Biological Resources, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
text
PhytoKeys
2020
153
111
154
http://dx.doi.org/10.3897/phytokeys.153.52920
journal article
http://dx.doi.org/10.3897/phytokeys.153.52920
1314-2003-153-111
475172DBEA915C52B9909334D3DB5478
Calypogeia khasiana Ajit P. Singh et V. Nath, Taiwania 52 (4): 320. 2007.
Type.
India. Meghalaya: East Khasi Hills, Langkyrdum-Dawki Road, 07 Nov 1998, V. Nath et al. (holotype: LWG [206109-A]; not seen).
Remarks.
Singh and Nath (2007b)
described
Calypogeia khasiana
from Khasia Mt. The species is somewhat similar to
C. ceylanica
, which differs in smaller cells and acute (not incised) leaf apex. The differences from
C. lunata
are less clear.
Singh and Nath (2007b
: 322) noted "
C. lunata
Mitt. differs from
C. khasiana
in having yellow brown color, stem 9-10 cells across and 0.25-0.26
x
0.36-0.38 mm in diameter, leaves obliquely ovate, apex narrowed, obtuse to subacute, bidentate, sinus less broad, acute to obtuse, lobes 2 cells long, underleaves bisbifid, lobes divergent, shallowly and irregularly notched, forming acute-obtuse dentitions". This list of features is untenable, for instance, because
C. lunata
is not yellowish in the herbarium and has similar (and greatly variable) leaf apex, and the same should be noted about underleaf shape. In our opinion,
C. khasiana
may be only a
C. lunata
habitat modification. The possible difference is in underleaves that are not or barely decurrent in
C. khasiana
(the feature is observed in the picture in the original paper, but no information on this feature is provided in the description), whereas commonly 1/2-1 of stem width decurrent in
C. lunata
. We include it in the key with some doubts, at the same couplets with
C. lunata
.