Taxonomic notes on Chinese Lilium L. (Liliaceae) with proposal of three nomenclatural revisions
Author
Gao, Yun-Dong
Author
Gao, Xin-Fen
text
Phytotaxa
2014
2014-06-13
172
2
101
108
http://dx.doi.org/10.11646/phytotaxa.172.2.5
journal article
10.11646/phytotaxa.172.2.5
1179-3163
5142421
Lilium brownii
F.E. Brown ex Miellez
in Spae (1845: 437)
Type
:—
CHINA
,
Hubei
,
Qiayuangu Shan
near
Xiang-yang
,
July 1904
,
Silvestri
199
(
FI
!)
.
=
Lilium wenshanense
Peng & Li (1990: 33)
syn. nov.
Type
:
—
CHINA
,
Yunnan
,
Kunming
,
Heilongtan
, via material cultivated in
Kunming Botanic Garden
,
30 Jun 1989
,
Peng
89-1
(
holotype
,
KUN
!).
Description
:—Bulb scales articulate or not (the rest of the description follows
Liang & Tamura 2000
).
Lilium wenshanense
was segregated from
L. formosanum
Wallace (1891: 442)
based on the former having segmented bulb scales (Peng & Li 1990). According to the authors,
L. wenshanense
is endemic to south
Yunnan
(southwest
China
). Based on the
holotype
specimen of
Lilium wenshanense
housed at KUN (Peng 89-1!), the species resembles
L. brownii
. This seems reasonable because
L. brownii
has a wide range in
China
and a sympatric distribution with
L. wenshanense
while
L. formosanum
is endemic to
Taiwan
(
Liang & Tamura 2000
;
Gao
et al
. 2013a
).
FIGURE 1
. Bulbs of
Lilium brownii
from different populations showing variable segmentation of the scales.
A-B
, Materials representing populations from Nanchuan, Chongqing (Gao G2010001, SZ) showing segmented (A) and unsegmented (B) scales, respectively;
C
, Jiangyou, Sichuan (WJ10051401, SZ);
D
, Lushui, Yunnan (Gao G2009002, SZ).
The main reason to question the species rank of
L. wenshanense
is the key feature used to erect it. The articulated bulb scales described in
L. wenshanense
can be found in many natural populations of
L. brownii
in
China
, including within some populations that exhibit both articulated and non-articulated bulbs (
Fig. 1
). Thus, the bulb scale feature cannot be used to distinguish
L. wenshanense
from
L. brownii
. Moreover, molecular phylogenetic analyses of the internal transcribed spacer (ITS) (
Gao
et al
. 2012
,
2013a
, b) also suggest that there is no boundary between
L. brownii
and
L. wenshanense
. Based on molecular phylogeny and continuous variation of the bulb scale characteristic, we propose that only one taxon should be recognized.
Another reason to question the status of
L. wenshanense
is the source of type specimen. Only the
holotype
specimen exists, and it was prepared from an accession of unknown origin in cultivation at Kunming Botanical Garden. Thus, the native habitat of
L. wenshanense
remains unknown, and the original authors did not investigate individuals other than the type. Concerns over the type specimen may further support our assertions that
L. wenshanense
is not deserving a recognition as a distinct species.