全 文 :植物科学学报 2014ꎬ 32(4): 329~335
Plant Science Journal
DOI:10 3724 / SP J 1142 2014 40329
国产唇形科香茶菜属一新记录种———暗红香茶菜
陈亚萍1ꎬ2ꎬ 胡国雄1ꎬ2ꎬ 向春雷1∗
(1 中国科学院昆明植物研究所ꎬ 东亚植物多样性与生物地理学重点实验室ꎬ 昆明 650201ꎻ 2 中国科学院大学ꎬ 北京 100049)
摘 要: 报道了采自西藏错那县的唇形科香茶菜属的一个中国新记录种ꎬ 即暗红香茶菜 Isodon atroruber R A
Clementꎮ 本研究对该种进行了描述ꎬ 并应用扫描电子显微镜和光学显微镜对其叶表皮、 花粉及小坚果的微形态
特征进行了观察和测量ꎮ 此外ꎬ 还编制了西藏产 19种香茶菜属植物的检索表ꎮ
关键词: 暗红香茶菜ꎻ 唇形科ꎻ 香茶菜亚族ꎻ 新记录种ꎻ 中国
中图分类号: Q949 777 6 文献标识码: A 文章编号: 2095 ̄0837(2014)04 ̄0329 ̄07
收稿日期: 2013 ̄11 ̄29ꎬ 退修日期: 2014 ̄01 ̄24ꎮ
基金项目: 国家自然科学基金(31270245ꎬ 31110103911)ꎻ 中国科学院知识创新工程重要方向性项目(KSCX2 ̄EW ̄J ̄24ꎬ KSCX2 ̄
EW ̄Z ̄1)ꎻ 中国科学院植物研究所系统与进化植物学国家重点实验室开放课题(LSEB2012 ̄08)ꎮ
作者简介: 陈亚萍(1990- )ꎬ 女ꎬ 硕士研究生ꎬ 研究方向为植物分类学(E ̄mail: chenyaping@ mail kib ac cn)ꎮ
∗ 通讯作者(Author for correspondence. E ̄mail: xiangchunlei@ mail kib ac cn)ꎮ
Isodon atroruber (Lamiaceae): A Newly Recorded
Species from China
CHEN Ya ̄Ping1ꎬ2ꎬ HU Guo ̄Xiong1ꎬ2ꎬ XIANG Chun ̄Lei1∗
(1 Key Laboratory for Plant Diversity and Biogeography of East Asiaꎬ Kunming Institute of Botanyꎬ Chinese Academy of
Sciencesꎬ Kunming 650201ꎬ Chinaꎻ 2 University of Chinese Academy of Sciencesꎬ Beijing 100049ꎬ China)
Abstract: Isodon atroruber R A Clementꎬ collected from Cuona County in Tibetꎬ is a new
record for China The species is described and illustrated here Scanning electron microscopy
and light microscopy are carried out to examine the micromorphology of the leaf epidermisꎬ
pollenꎬ and mericarp of the species A key to 19 taxa of Isodon distributed in Tibet is also
provided.
Key words: Isodon atroruberꎻ Lamiaceaeꎻ Subtribe Isodoninaeꎻ Newly recorded speciesꎻ
China
Isodon (Schrad ex Benth ) Spach ( Lami ̄
aceae: Nepetoideae: Ocimeae )ꎬ comprising
approximately 100 speciesꎬ is a morphologically
diverse genus distributed mainly throughout tropi ̄
cal and subtropical Asiaꎬ with two representa ̄
tives in tropical Africa[1-6] In Chinaꎬ 79 species
and 11 varieties are currently recognizedꎬ with
southwest China regarded as the center of mor ̄
phological diversity of the genus[3ꎬ4ꎬ7-9] Isodon
species are mainly shrubs and perennial herbsꎬ
and most are economically or medicinally impor ̄
tant[1ꎬ10] The genus is characterized by pedun ̄
culate and bracteolate cymesꎬ equally to sube ̄
qually 5 ̄toothed or 3 / 2 ̄bilabiate calycesꎬ strongly
2 ̄lipped (4 / 1) corollasꎬ as well as free filaments
inserted at the base of the corolla tubes[3ꎬ11]
During our preparation of an account for Flo ̄
ra of Pan ̄Himalayasꎬ we discovered a herbarium
collection held at the Herbarium of Kunming Insti ̄
tute of Botanyꎬ Chinese Academy of Sciences
(KUN) . It was collected from the Cuona County
of Tibetꎬ Chinaꎬ in August 1975 by the Compre ̄
hensive Scientific Expedition to the Qinghai ̄Tibet
Plateauꎬ Chinese Academy of Sciences This
specimen was identified as Rabdosia phulcho ̄
kiensis Murata [ = I phulchokiensis (Murata) H
Hara] in August 1978 by Professor Hsi ̄Wen Liꎬ
a renowned Chinese expert on the taxonomy of
Lamiaceae The species was later recorded in
Flora Xizangica[12] Howeverꎬ a label annotated
as “ not Rabdosia phulchokiensisꎬ maybe ( a)
new species” in September 1982 by Gen Murataꎬ
who first described R phulchokiensis[13]ꎬ was
later attached to the specimen sheet
To clarify the identity of this collectionꎬ we
undertook a field investigation of Cuona County in
September 2012 where we rediscovered plants of
this species After careful observations of in situ
plantsꎬ comparison with herbarium specimensꎬ
as well as reviewing relevant literature[3ꎬ4ꎬ12ꎬ13]ꎬ
we concluded that these Cuona County plants are
Isodon atroruber R A Clementꎬ which was first
reported from Bhutan by Clement in 1993[14]
Thusꎬ the species is newly recorded from China
Detailed characters and micromorphological fea ̄
tures of the leaf epidermisꎬ pollen grainsꎬ and
mericarps are described and illustrated in this
paperꎬ and a key to 19 taxa of Isodon distributed
in Tibet is also provided
Isodon atroruber R A Clement 暗红香茶
菜(新拟) (Fig 1ꎬ Fig 2)
Isodon atroruber R A Clementꎬ Edinburgh
J Bot 50 (1): 33 (1993). ——— Type: Bhutanꎬ
Thimphu Districtꎬ Dotenaꎬ Thimphu Chuꎬ 27°35′Nꎬ
89°38′Eꎬ moss bank in Quercus semecarpifolia
forestꎬ erect herbꎬ 30 - 40 cmꎬ leaves unplea ̄
santly scentedꎬ flowers dark crimsonꎬ 2550 mꎬ
5 ix 1984ꎬ Sinclari & Long 4843 (Holotypeꎬ Eꎬ
photo!). ——— I pulchokiensis auct non (Murata)
H Hara: H W Li in Fl Xizangica 4: 213 (1985).
Herbs perennialꎬ 60-90 cm tall Rhizomes
woodyꎬ massive Stems erect to ascendingꎬ 4 ̄
angledꎬ puberulent and pilose Leaves oppo ̄
siteꎻ petiole (1 5-) 2 5-6 (-8) cmꎬ puberu ̄
lent and piloseꎻ lamina 3 5-10 × 3-7 cmꎬ pa ̄
peryꎬ broadly ovateꎬ base broadly cuneate to
truncateꎬ margin crenateꎬ apex acute to acumi ̄
nateꎬ adaxially olive greenꎬ sparsely hirsuteꎬ
abaxially greenishꎬ hirsute and glandular puber ̄
ulent on veinsꎬ sparsely red ̄brown glandular on
both sides Inflorescence of narrow paniclesꎬ
terminal and axillaryꎬ 3-8 × 0 5-1 cmꎻ cymes
secundꎬ (3 -) 5 -7 ̄floweredꎬ densely puberu ̄
lentꎬ glandularꎬ pedunculateꎻ floral leaves bract ̄
likeꎬ broadly ovateꎻ bracteoles linearꎬ ca 1 mmꎻ
peduncle and pedicel ca 3-5 mm Calyx cam ̄
panulateꎬ ca 1 5 mmꎬ 2 ̄lipped to its 1/ 3 lengthꎬ
densely red ̄brown glandularꎬ 15 ̄veinedꎬ pu ̄
berulent on veinsꎻ teeth broadly triangularꎬ apex
obtuseꎻ fruiting calyx elongatedꎬ ca 3 mmꎬ tu ̄
bular ̄campanulateꎬ slightly curved Corolla dark
brownish purpleꎬ densely red ̄brown glandular
outsideꎬ tube shortꎬ included in calyxꎻ 2 ̄lippedꎬ
posterior lip 4 ̄cleftꎬ much recurvedꎬ ca 2 ×
4 mmꎬ with dark spots on middle two lobesꎬ an ̄
terior lip ca 3 5 mmꎬ entireꎬ concaveꎬ much
recurved Stamens and style exserted Meri ̄
carps brownishꎬ ellipticꎬ ca 1 mmꎬ glabrous Fl
Aug- Sepꎬ fr Sep - Oct
Taxonomic notes: This species is morpho ̄
logically similar to I lophanthoides (Buch  ̄Ham
ex D Don) H Haraꎬ but differs in panicles nar ̄
row (vs spreading in I lophanthoides)ꎬ cymes
secund and ( 3 -) 5 -7 ̄flowered ( vs not se ̄
cundꎬ 11 -13 ̄flowered I lophanthoides)ꎬ frui ̄
ting calyx ca 3 mm (vs 4 5-5 mm I lophan ̄
thoides)ꎬ corolla dark brownish purple ( vs
white or pink I lophanthoides)ꎬ and corolla tube
1 5 mm (vs 3 7-5 mm I lophanthoides) .
Leaf epidermis morphology: Fig 3: A - C
shows the indumentum on both sides and stomas
on the abaxial epidermis of the leaf of I atroru ̄
ber Two kinds of trichomes can be recognized:
glandular and eglandular Morphologicallyꎬ eg ̄
landular trichomes are multicellular and distribute
033 植 物 科 学 学 报 第 32卷
3
cm
1
cm
B
H
F
G
D
E
A
C
1
m
m
1
m
m
3
m
m
5
cm
2
m
m
2 mm
A Habitꎻ B Leafꎻ C Part of a narrow panicleꎻ D Flower in lateral viewꎻ E Flower in frontal viewꎻ F Calyxꎻ G Pistilꎻ H Mericarp.
Fig 1 Isodon atroruber R A Clement
133 第 4期 陈亚萍等: 国产唇形科香茶菜属一新记录种———暗红香茶菜(英文)
A B
EDC
A Habitatꎻ B Habitꎻ C Leavesꎻ D Narrow panicle in frontal viewꎻ E Narrow panicle in lateral view.
Fig 2 Photographs of Isodon atroruber in the wild
sparsely on the adaxial surfaceꎬ and along veins
of the abaxial side (Fig 3: Aꎬ C) . Both peltate
and capitate glandular trichomes are present
The former mainly along veins on the abaxial side
(Fig 3: A)ꎬ whereas the latter spread sparsely
on both leaf surfaces (Fig 3: A-C) . Stomatal
apparatuses are arranged irregularly in the aba ̄
xial epidermis (Fig 3: B) .
Pollen morphology: Fig 3: D and E demon ̄
strate the pollen grains of I atroruber From the
polar view (Fig 3: D)ꎬ I atroruber is charac ̄
terized with hexacolpate pollen grainsꎬ a shared
morphology of species from subfamily Nepe ̄
toideae[15ꎬ16] The pollen is oblate with polar axis
(P) = 40 4 ± 2 25 μmꎬ equatorial axis (E) =
45 5 ± 1 90 μmꎬ and P / E = 0 887 ± 0 025
The exine sculpturing is incomplete reticulate and
perforated (Fig 3: E) .
Mericarp morphology: The mericarp of I at ̄
roruber is shown in Fig 3: F The surface orna ̄
mentation of the mericarp is papillate Length
(L) = 1 17 ± 0 055 mmꎬ width (W) = 0 74 ±
0 040 mmꎬ the shape is elliptic
Distribution and habitat: Bhutanꎬ China (Ti ̄
bet) . It grows mostly on moist cliffs or on the
edge of forests at an elevation of about 2800 mꎬ
together with Anaphalis sp.ꎬ Galium sp.ꎬ Hedera
nepalensis var sinensis (Tobler) Rehderꎬ Me ̄
morialis hirta (Blume ex Hassk ) Wedd.ꎬ Ophio ̄
pogon sp.ꎬ Polypodiodes sp.ꎬ Rhododendron
sp.ꎬ Synotis alata (Wall ex DC ) C Jeffrey &
Y L Chenꎬ Urtica sp.ꎬ etc In Chinaꎬ Isodon
233 植 物 科 学 学 报 第 32卷
A B
C D
F
200 mμ 50 mμ
250 mμ 5 mμ
200 mμ2 mμ E
A Adaxial surface of leafꎻ B Glands and stomata on adaxial epidermis of leafꎻ C Abaxial surface of leafꎻ
D Whole pollenꎬ equatorial viewꎻ E Exine surface of pollenꎻ F Whole mericarp.
Fig 3 Micromorphology of leaf epidermisꎬ pollen grainꎬ and mericarp of Isodon atroruber
using scanning electron microscopy
atroruber is known only from one location in Cuona
Countyꎬ Tibetꎬ and considered as a rare species
before additional localities for the taxon are found.
Specimens examined: Tibet (西藏)ꎬ Cuona
(错那 )ꎬ Le Townshipꎬ near the Hydropower
Station (勒乡水电站附近)ꎬ alt 2850 mꎬ 27°49′
34 25″Nꎬ 91°43′32 42″Eꎬ on the edge of forestꎬ
3 Sep 2012ꎬ G X Huꎬ X C Zhang & Z X
Fu 1209005 (KUN)ꎻ Tibet (西藏)ꎬ Cuona (错
那 )ꎬ on the way from Mama Township to
Chachang (麻玛乡至茶场途中)ꎬ alt 2800 mꎬ
on the edge of forestꎬ 26 Aug 1975ꎬ Qinghai ̄Ti ̄
bet Plateau Expeditionꎬ Chinese Academy of Sci ̄
ences 751694 (KUN) .
An identification key for the 19 taxa of Isodon
distributed in Tibet is here provided as follows
333 第 4期 陈亚萍等: 国产唇形科香茶菜属一新记录种———暗红香茶菜(英文)
Key to the Taxa of Isodon from Tibetꎬ China
1 Corolla 1 2-1 5 cmꎬ tube 2 × or more longer than limb 2
2 Calyx purplishꎬ lamina sparsely hirtellous or puberulent I irroratus
2 Calyx not tinged purplishꎬ lamina glabrous I wardii
1 Corolla shorter than 1 2 cmꎬ tube 2 × or less longer than limb 3
3 Calyx with 5 equal or subequal teeth or inconspicuously 2 ̄lipped 4
4 Lamina and calyx red ̄brown glandular 5
5 Corolla dark brown ̄purpleꎻ cymes in narrow paniclesꎬ secund I atroruber
5 Corolla white or pinkꎻ cymes in spreading paniclesꎬ not secund 6
6 Calyx densely villousꎬ lamina margin serrate I hispidus
6 Calyx sparsely villous basallyꎬ lamina margin crenate 7
7 Plant 0 5 - 1 m tallꎻ lamina 1 5 - 8 8 × 0 5 - 5 3 mmꎬ apex obtuse I lophanthoides var lophanthoides
7 Plant to 1 5 m tallꎻ lamina 20 × 8 5 mmꎬ apex acuminate I lophanthoides var graciliflorus
4 Lamina and calyx not red ̄brown glandular 8
8 Branchletꎬ leafꎬ and calyx variously dense hairyꎻ lamina mostly corrugate 9
9 Branchletꎬ leafꎬ and calyx densely stellate tomentose 10
10 Calyx teeth ca 1 / 3 as long as tube I rugosus
10 Calyx teeth ca 1 / 2 as long as tube 11
11 Lamina 3 - 8 cm I grandifolia var atuntzensis
11 Lamina 0 7 - 1 5 cm I oresbius
9 Branchletꎬ leafꎬ and calyx with different hairs than above 12
12 Lamina gray abaxiallyꎬ conspicuously discolored 13
13 Lamina 2 5-4 4 mm I smithianus
13 Lamina shorter than 2 mm I parvifolius
12 Lamina pale green abaxiallyꎬ not discolored I loxothyrsus
8 Branchletꎬ leafꎬ and calyx sparsely hairyꎻ lamina usually not corrugate 14
14 Stem leaf usually shorter than 2 cm I pharicus
14 Stem leaf longer than 2 cm 15
15 Branchlet and petiole densely gray pubescent I silvaticus
15 Branchlet and petiole densely glandular pubescent I pleiophyllus
3 Calyx conspicuously 2 ̄lipped 16
16 Calyx lips extending to middle of calyx 17
17 Cymes in narrow paniclesꎬ corolla purple I coetsa
17 Cymes in spreading paniclesꎬ corolla yellow I sculponeatus
16 Calyx lips extending below middle of calyx 18
18 Corolla whitish yellowꎬ stamens and style long exserted I scrophularioides
18 Corolla whiteꎬ stamens and style included I weisiensis
Acknowledgements: We would like to express our
warm thanks to Ms Ling Wang (KUN) for her excellent
drawingꎬ Dr Tetsuo Ohi ̄Toma (TI) for providing images
of the type specimens of I phulchokiensisꎬ Dr Barry J
Conn (NSW) for his great help in editing the manuscript
Thanks are also due to the staff of the following herbaria
for allowing us to study their Isodon specimens: CDBIꎬ
Eꎬ IBKꎬ IBSCꎬ Kꎬ KUNꎬ Lꎬ LEꎬ PEꎬ TIꎬ and W
References:
[ 1 ] Wu CYꎬ Li HW Rabdosia (Bl ) Hassk[M]∥Wu
CY ed Flora Reipublicae Popularis Sinicae Bei ̄
jing: Science Pressꎬ 1977ꎬ 66: 416-534.
433 植 物 科 学 学 报 第 32卷
[ 2 ] Codd LE The genus Isodon (Schard ex Benth )
Spach in Africa and a new genus Rabdosiella
Codd (Lamiaceae) [J] . Bothaliaꎬ 1984ꎬ 15 (1-
2): 7-10.
[ 3 ] Li HW Taxonomic review of Isodon ( Labiatae)
[J] . J Arnold Arborꎬ 1988ꎬ 69 (4): 289-400.
[ 4 ] Li HWꎬ Hedge IC Lamiaceae[M]∥Wu CYꎬ Ra ̄
ven PHꎬ eds Flora of China Beijing: Science
Pressꎬ Saint Louis: Missouri Botanical Garden
Pressꎬ 1994ꎬ 17: 269-291.
[ 5 ] Paton AJꎬ Springate Dꎬ Suddee Sꎬ Otieno Dꎬ
Grayer RJꎬ Harley MMꎬ Willis Fꎬ Simmonds
MSJꎬ Powell MPꎬ Savolainen V Phylogeny and
evolution of basils and allies (Ocimeaeꎬ Labia ̄
tae) based on three plastid DNA regions[J] . Mol
Phylogenet Evolꎬ 2004ꎬ 31 (1): 277-299.
[ 6 ] Mabberley DJ Mabberleys Plant ̄book: A Porta ̄
ble Dictionary of the Plantsꎬ Their Classificationsꎬ
and Uses[M] . Cambridge: Cambridge University
Pressꎬ 2008.
[ 7 ] Paton AJꎬ Ryding O Hanceolaꎬ Siphocranion and
Isodon and their position in the Ocimeae (Labia ̄
tae)[J] . Kew Bullꎬ 1998ꎬ 53 (3): 723-731.
[ 8 ] Zhong JSꎬ Li Jꎬ Li Lꎬ Conran JHꎬ Li HW Phy ̄
logeny of Isodon ( Schard ex Benth ) Spach
(Lamiaceae) and related genera inferred from nu ̄
clear ribosomal ITSꎬ trnL ̄trnF regionꎬ and rps16
intron sequences and morphology[ J] . Syst Botꎬ
2010ꎬ 35 (1): 207-219.
[ 9 ] Xiang CLꎬ Liu ED A new species of Isodon
(Lamiaceaeꎬ Nepetoideae ) from Yunnan Prov ̄
inceꎬ Southwest China [ J] . Syst Botꎬ 2012ꎬ 37
(3): 811-817.
[10] Sun HDꎬ Xu YLꎬ Jiang B Diterpenoids from Iso ̄
don species[M] . Beijing: Science Pressꎬ 2001.
[11] Harley RMꎬ Atkins Sꎬ Budantsev ALꎬ Cantino PDꎬ
Conn BJꎬ Grayer Rꎬ Harley MMꎬ De ̄Kok Rꎬ
Krestovskaja Tꎬ Morales Rꎬ Paton AJꎬ Ryding Oꎬ
Upson T Labiatae[M]∥Kubitzki K ed The Fami ̄
lies and Genera of Vascular Plants Berlin:
Springerꎬ 2004ꎬ 7: 167-275.
[12] Li HW Labiatae[M]∥Wu CY ed Flora Xizangi ̄
ca Beijing: Science Pressꎬ 1983ꎬ 4: 98-224.
[13] Murata G Labiatae[M]∥Ohashi H ed The Flora
of Eastern Himalaya Tokyo: University of Tokyo
Pressꎬ 1975ꎬ 3: 91-98.
[14] Clement RA Notes relating to the flora of Bhutan:
ⅩⅧ New taxa and a new combination in the Labia ̄
tae[J]. Edinburgh J Botꎬ 1993ꎬ 50 (1): 33-38.
[15] Erdtman G Pollen morphology and plant taxono ̄
my IV Labiataeꎬ Verbenaceae and Avicenniace ̄
ae[J] . Svensk Bot Tidskrꎬ 1945ꎬ 39 (3): 279-
285.
[16] Cantino PDꎬ Sanders RW Subfamilial classifica ̄
tion of Labiatae [ J] . Syst Botꎬ 1986ꎬ 11 ( 1):
163-185.
(责任编辑: 张 平)
533 第 4期 陈亚萍等: 国产唇形科香茶菜属一新记录种———暗红香茶菜(英文)