Journal of
Threatened Taxa | www.threatenedtaxa.org | 26 July 2018 | 10(8): 12137–12139
Rediscovery, extended
distribution and conservation assessment of Cinnamomum
goaense (Lauraceae) in the Western Ghats, India
M.P. Geethakumary1, S. Deepu2
& A.G. Pandurangan3
1,2,3 Plant Systematics and Evolutionary Science
Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram, Kerala 695562, India
1geethatbgt@gmail.com, 2deepu_sdas@jntbgri.res.in,
3agpandurangan@gmail.com (corresponding author)
doi: http://doi.org/10.11609/jott.4013.10.8.12137-12139
Editor: P. Lakshminarasimhan,
Botanical Survey of India, Pune, India. Date of publication: 26 July
2018 (online & print)
Manuscript details: Ms
# 4013 | Received 15 January 2018 | Final received 07 June 2018 | Finally
accepted 30 June 2018
Citation: Geethakumary, M.P., S. Deepu & A.G. Pandurangan (2018).
Rediscovery, extended distribution
and conservation assessment of Cinnamomum goaense (Lauraceae) in the
Western Ghats, India.
Journal of Threatened Taxa 10(8): 12137–12139; http://doi.org/10.11609/jott.4013.10.8.12137-12139
Copyright: © Geethakumary et al. 2018.
Creative Commons Attribution 4.0 International License.
JoTT allows unrestricted use of this article in any
medium, reproduction and distribution by providing adequate credit to the
authors and the source of publication.
Funding: JNTBGRI Plan Grant and DST-SERB, Government of India (PDF/2016/000371).
Competing interests: The authors declare no competing interests.
Acknowledgements: The authors
are grateful to the curators of Leiden (L) and Arnold (A) herbarium for
providing access to images of the species, the Kerala Forest Department for
giving permission and logistic support to conduct field studies and the Kerala
State Council for Science and Technology for financial assistance through
JNTBGRI Plan Grants. The second author
acknowledges DST-SERB, Government of India for the financial assistance.
Abbreviation: ‘A’ - Arnold
Herbarium; ‘L’ - Leiden Herbarium
The genus Cinnamomum
Schaeffer includes an old-world group, predominantly distributed in
subtropical to tropical Asia, plus a few species in Australia and the western
Pacific area, as well as a New World group in Central and South America (Rohde
et al. 2017). Rohwer
(1993) estimated the total number of species to c. 350, of which 52 New World
species have been recently transferred to Aiouea Aubl. (Rohde et al. 2017). In India, this genus is represented by 49
species of which 26 occur in the Western Ghats (Geethakumary
et al. 2017). During our botanical
explorations in the Western Ghats, we collected an interesting specimen of Cinnamomum from Idukki
District of Kerala. A detailed study of
the relevant literature confirmed its identity as Cinnamomum
goaense Kosterm., described by Kostermans (1985)
based on the collections of Fernandes and
Stocks. From a thorough literature
survey and herbarium consultation, it became apparent that this taxon had not
been collected since 1950. Hence our
discovery is a recollection of this species after a lapse of 57 years. In the collection by Fernandez (A00041271!, L0035798!) the locality is given as ‘towards old Gund village, E of Goa Border’, and the collection of
Stocks is from Canara (L0309076!). Both these places refer not to point
localities, but to geographically extensive political areas of the late
colonial period, which belongs to “North Kanara”
District, representing localities in Uttara Kannada,
Karnataka State. Interestingly, the
collection of Fernandez is around 100 years after the collection of Stocks as
is evident from the fact that the collections of Stocks from this region were
mainly during the 1840s (probably during 1847).
The present collection forms a new record for Kerala and an extension in
the distribution of this species to the southern Western Ghats after the Palghat gap, which is of phytogeographic
significance.
A detailed description and other
relevant information are provided based on recent collections. The conservation status of this species is
also assessed in light of the present collection.
Cinnamomum goaense Kosterm.,
Bull. Bot. Surv. India 25: 94.
1985 (1983). (Fig. 1)
Type:
India, southern India, Bombay Presidency, towards old Gund
village, E of Goa border, 13 May 1950, J. Fernandes
1453 (Holotype: -A00041271!,
Isotype: -L0035798!).
Trees, 6–9 m high; branchlets slender, angular, sub appressed
pilose. Leaves opposite or
sub-opposite, sub-ovate or ovate-oblong or ovate-lanceolate,
7–26 × 5.2–7.3 cm, coriaceous, glabrous, paler beneath, acute at base, entire,
gradually acuminate at apex, acumen 1–2 cm long; midrib slender, prominent,
lateral nerves arising c. 5mm above base, reaching near apex, tertiary nerves
parallel, 3–4 mm apart; petioles slender, c. 1.6cm long, slightly
canaliculated. Panicles
axillary or pseudo-terminal, many-flowered, minutely sericeous;
main peduncle slender, 8–18 cm long; branchlets 2–6,
slender, c. 6cm long. Flowers pale yellow, 5–8 × c. 5 mm, aggregated
near apex of inflorescence branches. Tepals 6 in 2 whorls of 3 each, ovate or ovate-oblong, 2–3
× 2–2.5 mm, sericeous within, apex obtuse to
acute. Stamens 9 in 3 whorls of 3 each;
all 4-locellate; whorls I and II 1.5–2 mm long, anthers ellipsoid, introrse; filaments c. 0.8mm long, hirsute; whorl III c.
2mm long, anthers oblong, extrorse; glands shortly stipitate, flat, c.0.6mm long, attached to basal portion of
the filaments; staminodes shorter than anthers, c.
1.3mm long, sagittate, stipes
pilose. Ovary ellipsoid, c. 1 mm long, glabrous, style c. 1mm long,
cylindrical; stigma peltate. Fruits ellipsoid,
c. 6 × 10 mm; cupule cup-shaped, base conical, with
remnants of tepal bases.
Phenology
Flowering
and fruiting are probably from March to September.
Specimens examined
53695 (TBGT!),
29.iii.2007, India, Kerala, Idukki District, Thodupuzha, ~600m, coll. Geethakumary;
73655 (TBGT!), 05.v.2012, India, Kerala, Idukki
District, Thodupuzha, ~600m, coll. Deepu Sivadas. India, Karnataka, Uttara Kannada
District, towards old Gund Village, east of Goa
border, 13.v.1950, J. Fernandes 1453 (A00041271!, L0035798!), Canara, s.d., Stocks s.n. (L0309076!).
Conservation status
The
species is presently known only from Uttara Kannada,
Karnataka and Idukki, Kerala (Fig. 2). The population size of this species at Thodupuzha, Idukki is small with
very few reproductively mature individuals.
Apart from this, based on herbarium information a population is present
at Uttara Kannada District, Karnataka. Even though there are no recent collections
from this locality, we cannot rule out the probability of finding it
there. There are less than 25 mature
individuals in the subpopulation at Thodupuzha, but
we are not sure about the number of mature individuals or the quality of the
habitat at Uttara Kannada. Due to its limited distribution knowledge
from several botanical studies in the Western Ghats, we assume it is highly
restricted and found in a few severely fragmented locations with a plausible
threat that could impact the status of the species. We recommend immediate surveys in the type
locality to determine its conservation status.
References
Geethakumary, M.P., S. Deepu & A.G. Pandurangan
(2017). A new species of Cinnamomum and notes on the status of C. palghatensis in Western Ghats, India. Phytotaxa 326(4): 252–258; http://doi.org/10.11646/phytotaxa.326.4.3
Kostermans, A.J.G.H. (1985). The
south Indian species of Cinnamomum Schaeffer
(Lauraceae). Bulletin of
the Botanical Survey of India 25: 90–133.
Rohde, R., B. Rudolph, K. Ruthe, F.G. Lorea-Hernández, P.L.R. de Moraes, J. Li & J.G.
Rohwer (2017). Neither Phoebe nor Cinnamomum
- the tetrasporangiate species of Aiouea
(Lauraceae). Taxon 66(5): 1085–1111; http://doi.org/10.12705/665.6
Rohwer, J.G. (1993). Lauraceae,
pp. 366–391. In: Kubitzki, K., J.G. Rohwer & V. Bittrich (eds.). The
Families and Genera of Vascular Plants - Vol. 2. Springer,
Berlin.