Journal of Threatened Taxa | www.threatenedtaxa.org | 26 July
2019 | 11(9): 14228–14231
Extended distribution record of
two bellflower species
of Codonopsis (Campanulaceae)
from the Indian state of Arunachal Pradesh
Khilendra Singh Kanwal 1, Umeshkumar Lalchand Tiwari 2,
Lod Yama 3 & Mahendra Singh Lodhi
4
1,3,4 G.B. Pant National Institute of Himalayan Environment and Sustainable
Development, North East Regional Centre, Itanagar, Arunachal Pradesh 791111, India.
2 Botanical
Survey of India, Arunachal Pradesh Regional Centre, Itanagar,
Arunachal Pradesh 791111, India.
1 kskanwal03@gmail.com, 2 tigerumesh11@gmail.com (corresponding author), 3 lod1437@gmail.com, 4 mahen29.mail@gmail.com
doi: https://doi.org/10.11609/jott.4432.11.9.14228-14231
Editor: Pankaj Kumar, Kadoorie
Farm and Botanic Garden (KFBG) Corporation, Tai Po, Hong Kong S.A.R., China. Date of publication: 26 July 2019
(online & print)
Manuscript details: #4432 | Received 25 July 2018 |
Final received 12 June 2019 | Finally accepted 25 June 2019
Citation: Kanwal, K.S., U.L. Tiwari, L. Yama
& M.S. Lodhi (2019). Extended distribution record of two bellflower species
of Codonopsis (Campanulaceae)
from the Indian state of Arunachal Pradesh. Journal of Threatened Taxa 11(9): 14228–14231. https://doi.org/10.11609/jott.4432.11.9.14228-14231
Copyright: © Kanwal et al 2019. Creative Commons Attribution
4.0 International License. JoTT allows unrestricted use, reproduction, and
distribution of this article in any medium by adequate credit to the author(s)
and the source of publication.
Funding: Science & Engineering Research Board
(SERB), Department of Science
& Technology (DST),
Government of India.
Competing interests: The authors declare no competing
interests.
Acknowledgements: Authors are highly thankful for financial support from project (F.No. EMR/2014/000408) funded by Science & Engineering
Research Board (SERB), Deptt. of Science &
Technology (DST), Government of India. Authors are thankful to Director of G.B.
Pant National Institute of Himalayan Environment and Sustainable Development
and Director of Botanical Survey of India for necessary facilities and
encouragement. Special thanks are due to the local communities for sharing
valuable information about Nagula wetland area.
Authors are also highly grateful to the Department of Environment and Forest,
Govt. of Arunachal Pradesh and Indian Army for giving the necessary permission
and support during field study.
The genus Codonopsis
Wall. (Campanulaceae) consists of about 42
species, widely distributed in tropical and temperate to alpine regions of Asia
and Europe (Haridasan & Mukherjee 1996; Hong
2015). In India, the genus is mainly
distributed in temperate, sub-alpine, and alpine regions of the Himalaya. The name Codonopsis
was given by Wallich (1824). Derived from the Greek word ‘kodon/ codon’ meaning bell and the Latin suffix ‘-opsis’ used to indicate resemblance, the name refers to the
shape of its flower, which is similar to that of a bell. Among the Codonopsis species, C.
pilosula (Franch.)
Nannf. and C. lanceolata (Sieb. et Zucc.) Benth. & Hook. f. ex Trautv.
are more popular than the others, especially due to their phytochemical
activities (He et al. 2015). According
to Kala (2010), C. clematidea (Schrenk) Cl., C. ovata Benth.,
and C. rotundifolia Benth
of the western Himalaya are used in indigenous medicine by ‘amchis’
for curing skin diseases. “Sowa-Rigpa”
commonly known as amchi system of medicine is one of
the oldest living and well documented medical tradition of the world. It has been popularly practice in Tibet,
Magnolia, Bhutan, some parts of China, Nepal, Himalayan regions of India and
few parts of former Soviet Union.
A survey was carried out in Tawang
District of Arunachal Pradesh during
2016–2017 for the assessment of the floral diversity of high altitude
areas. Codonopsis
foetens and C. thalictrifolia
were collected from Kyo Tso Wetlands (27.6960N
& 91.8420E, 4,245m) and Nagula Tso
Wetlands (27.6540N & 91.8630E, 4,070m),
respectively. These two species of Codonopsis are very rare and endemic to the eastern
Himalaya and have a limited distribution in Sikkim, Bhutan, and China. The Nagula Wetland
complex area is rich in high altitude floral diversity and is little explored
at present. The identification of the
species was confirmed through consultation of type specimens and the protologue
of the species. Further consultation of
important literature (Clarke 1882; Haridasan &
Mukherjee 1996; Chowdhery et al. 2008; Pal 2013;
Tiwari 2015–2016; Dash & Singh 2017) and of herbarium at various
institutions, such as the Botanical Survey of India, Itanagar
(ARUN), the State Forest Research Institute (SFRI), Itanagar,
and the Royal Botanic Gardens, Kew (K), United Kingdom, were done for the
identification of the species and the gathering of information on their
historical distribution. These sources
revealed that the species were not reported earlier from Arunachal Pradesh and
that, in India, these were known from Sikkim and Darjeeling District of West
Bengal. Therefore, these species are
presented here as new distribution records for the state of Arunachal
Pradesh. The present communication
provides detailed descriptions with type, ecology, and images of the collected
plant species. The specimens are
deposited in the herbarium of the G.B. Pant National Institute of Himalayan
Environment and Sustainable Development in Itanagar
and at BSI APRC Itanagar (ARUN) for future
references.
Codonopsis foetens
J.D.Hooker & Thomson, J. Proc. Linn. Soc., Bot. 2: 16. 1858;
C.B. Clarke in Hook.f., Fl. Brit. India 3: 433.1882
(Image 1).
Type: India, Sikkim, J.D.Hooker
s.n. (K!) Ascending herbs, roots slender, 10–55 cm ×
1–2 cm. Caudexes abundantly branched,
and thus stems several to many from one caudex, caespitose. Main stem erect or ascending, 20–40 cm tall,
villous; branches numerous, aggregated in the lower part, 1–10 cm tall, usually
sterile. Leaves on main stems alternate,
those on branches opposite or subopposite; broadly ovate to elliptic-ovate,
caudate to cordate at base, 3–11 mm × 3–10 mm, densely white pilose on both
surfaces; margin entire or subentire, apex obtuse; petiole 1–3 mm, pilose. Flowers solitary (rarely several), terminal
on main stems and sometimes branches, ± pendent; pedicels 4.5–3.5 cm, terminal,
glabrous or sparsely pilose. Hypanthia 3–4 mm × 7.5–9.0 mm, broadly subglobose, glabrous or sparsely
pilose. Calyx tube adnate to ovary up to
middle, semiglobose or hemispherical, glabrous or very sparsely white hispidulous,
perigynous; lobes ovate, ovate-oblong, or
ovate-lanceolate, 7–20 mm × 2–7 mm, rather densely hispidulous,
entire, recurved at margin, apex acute or obtuse. Corolla epigynous,
pale blue or pale purple with interior markings, globose-campanulate, 2.0–4.5
cm × 2.5–3 cm; lobes suborbicular, 8–12 mm, apex obtuse or acute, tube 15–20 mm
long. Stamens glabrous;
filaments slightly dilated at base, ca. 5mm; anthers 4–5 mm; anther 3–5 mm
long. Ovary semi inferior; style ca. 9mm
long. Capsule obconical at inferior
part, conical at superior part, ca. 2.0cm × 1.5cm. Seeds brownish-yellow, ellipsoid or oblong,
ca. 1mm, smooth.
Flowering and fruiting: July–October.
Habitat: Found in the alpine habitats of the Himalaya
at an elevation of 3500–4500 m along grassy slopes, alpine scrub, crevices,
forests, and meadows at forest margins on north-facing slopes.
Distribution: India (Sikkim and Arunachal Pradesh), Bhutan,
Nepal, and China (Xizang, Zizhique, and northwestern Yunnan).
Specimen examined: (ARUN!) 1020, 11.viii.2017, India,
Arunachal Pradesh, Tawang District, 27.6960N
& 91.8420E, above 4,000m, coll. Lod, Roona
& K.S. Kanwal (Image 3).
Ecology and threats: This terrestrial plant
grows on grassy slopes in alpine pastures near Kyo
Tso Wetlands. The species is facing
threats from grazing by domestic animals (mainly yak and sheep), firewood
collection, unregulated tourism, solid waste generation, and development
projects. Climate change may be a future
threat for the species. Therefore, in
situ and ex situ conservation measures are essentially required for the
conservation of this species.
Codonopsis thalictrifolia
Wall. in Roxb., Fl. Ind. 2: 106. 1824; Hook.f.
& Thoms. In J. Linn. Soc. 2:16 1858; C.B. Clarke
in Hook.f., Fl. Brit. India 3: 432.1882. (Image 2)
Type: Nepal, Gosainthan, Wallich cat. no. 1297 (K!)
Ascending herbs, 10–35 cm high; roots carrot-shaped,
15–20 cm × 0.5–1.0 cm. Stems robust,
sparsely pilose or glabrous, profusely branched near
base; branches sterile, slender, leafy, aggregated at base of main stems, 4–6
cm, villous. Leaves on main stems
alternate, those on branches subopposite; petiole ca. 2mm, white hirsute; blade
ovate or suborbicular, 2.0–5.5 mm × 2–6 mm, both surfaces villous, base cordate
or truncate, margin sub-entire or crenate, apex obtuse or acute. Flowers solitary, terminal on main stems,
slightly pendent. Hypanthis
1.5–2.0 mm × 6–8 mm, broadly obconic, scabrid-pilose. Calyx tube perigynous;
adnate to ovary up to middle, hemispheric, 3–5 mm × 6–10 mm, glabrous or villous; lobes triangular or oblong, 5mm × 3mm,
outside hairy, margin entire, apex acute or obtuse; sinus between lobes broad
and obtuse. Corolla tubular-campanulate, 2.0–4.8 cm × 1.5–4.3 cm, shallowly
lobed; lobes triangular, 2–4 mm × 7–9 mm, apex obtuse; tube pale blue, 18–23 mm
long, glabrous or occasionally sparsely villous. Filaments slightly dilated at base, ca. 1cm;
anthers ca. 3mm, villous at connective.
Capsule hemispherical at base, conical toward apex, rostrate. Seeds numerous, brownish-yellow, ellipsoid,
smooth.
Flowering and fruiting: July–October
Habitat: Found in the alpine habitats of the Himalaya
at an elevation of 3300–4500 m along grassy slopes, alpine scrub, crevices,
forests, and meadows at forest margins on north-facing slopes.
Distribution: India (Singalelah
in West Bengal, Dzongri to Aloktong
in Sikkim, and Arunachal Pradesh), Bhutan, Nepal, and China (Xizang and Zizhique).
Specimen examined: (ARUN!) 1019, 11.viii.2017, India,
Arunachal Pradesh, Tawang District, three samples,
27.6540N & 91.8630E, 4,000m, coll. Lod, Roona & K.S. Kanwal (Image
4).
Ecology and threats: The species grows on the
hilltop of an alpine pasture of Nagula Lake. Grazing, fuelwood collection, tourism
activities, infrastructure establishment, and change of land use pattern were
observed as some of the threats for the species in the area. The catchment area of the lake is used as a
grazing site by the local villagers for their cattle, mainly yak and
sheep. The species may face a further
threat from climate change in the near future.
Hence, conservation and management measures are required for the
conservation of this species.
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