On the status of some species of Cheirostylis Blume (Orchidaceae) from India
Author
Bhattacharjee, Avishek
text
Candollea
2012
2012-07-01
67
1
31
35
journal article
3458
10.15553/c2012v671a3
a678e684-c00b-442e-b1bd-6b967911ea55
2235-3658
5708655
Cheirostylis parvifolia
Lindl.inEdwards ’s
Bot.Reg. 25: 19. 1839.
Typus
:
SRI
LANKA “
Ceylon
”:
Loddiges
s.n.
(holo-: K [K000718267], photo!)
.
=
Cheirostylis seidenfadeniana
C. S. Kumar & F. N. Rasm.
in
Nordic J. Bot.
7: 409. 1987
.
Typus
:
INDIA
.
Kerala
:
Ponmudi
,
Trivandrum Dist.
,
950 m
,
25.X. 1983
,
C. Sathish Kumar
CU 36960
(holo-:
TBGT
; iso-:
C
,
CALI
), syn. nov..
Distribution. –
India
:
Kerala
,
Maharashtra
(fide
JAYAWEERA, 1981
;P UNEKAR, 2002);SriLanka.
Note. –
SATHISH KUMAR & RASMUSSEN (1987) distinguished
C. seidenfadeniana
from
C. parvifolia
on the basis of epichile with entire lobules and 2 conspicuous tufts of hairs at its base. The authors mentioned that the material of
C. parvifolia
was very scarce from
India
and they could consult only 3 old herbarium specimens including the type (
Loddiges s.n
., K) which was in very bad condition. However, it has been found that the
holotype
including its associated illustrations of flower and dissected floral parts (on the type sheet) is sufficient for its purpose and there is no need of epitypification at present. During the present work, critical study of the live specimens of
C. seidenfadeniana
provided by
Dr. C. Sathish Kumar
(first author of
C. seidenfadeniana
) revealed that the minute tufts of hairs at the base of epichile can be seen only in live, pickled or very well preserved specimens but not in the old herbarium specimens. The present study also reveals that the margin of the epichile lobules of
C. seidenfadeniana
varies (
Fig. 1
) from nearly entire to 2-4 lacerate which clearly indicates that
C. seidenfadeniana
and
C. parvifolia
are the same species. Thus,
C. seidenfadeniana
is treated here as synonym of
C. parvifolia
. In spite of author’s personal visit to CALI and TBGT, the
holotype
and isotype(s) of
C. seidenfadeniana
could not be located as claimed in the protologue.
Dr. Olof Ryding
,
Curator of Vascular Plants
of C also confirmed the unavailability of any type specimen of
C. seidenfadeniana
in
C. Surprisingly
, a specimen bearing the same collection number and field data (excepting the date which is prior to publication of
C. seidenfadeniana
) as that of the
holotype
and isotypes of
C. seidenfadeniana
has been located at
K. In
absence of all the designated types (
holotype
and isotypes), the K-specimen may be selected as
lectotype
(if there is no doubt that it was actually used while describing
C. seidenfadeniana
) or as
neotype
of
C. seidenfadeniana
.
For
the time being the lecto-or neotypification has not been done in the present paper with a hope that the types may be found in near future.
This
rare species is presently grown and conserved in the
Orchidarium of Tropical Botanic Garden
and
Research Institute
,
Thiruvananthapuram
,
Kerala
,
India
by
Dr. Sathish Kumar
and his co-workers.