Extended
distribution of Smithsonia straminea C.J.
Saldanha, an endemic orchid in Maharashtra, India
Mandar N. Datar 1& Vinaya S. Ghate 2
1,2 Botany Group, Agharkar Research
Institute, Pune, Maharashtra 411004, India
Email: 1 datarmandar@gmail.com
(corresponding author), 2 vsghate@yahoo.com
Date
of publication (online): 26 February 2012
Date
of publication (print): 26 February 2012
ISSN
0974-7907 (online) | 0974-7893 (print)
Editor: Pankaj Kumar
Manuscript
details:
Ms # o2925
Received 25 August
2011
Final received 26
November 2011
Finally accepted 11
January 2012
Citation: Datar, M.N. & V.S. Ghate (2012).
Extended distribution of Smithsonia straminea C.J.
Saldanha, an endemic orchid in Maharashtra, India. Journal
of Threatened Taxa 4(2): 2406–2408.
Copyright: © Mandar N. Datar & Vinaya S. Ghate 2012. Creative
Commons Attribution 3.0 Unported License. JoTT allows unrestricted use of this
article in any medium for non-profit purposes, reproduction and distribution by
providing adequate credit to the authors and the source of publication.
Acknowledgements:The authors are thankful to the
Director, Agharkar Research Institute, Pune for providing necessary facilities.
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During one of the routine
floristic surveys of sacred groves of Dapoli Taluka, Ratnagiri District in the
Konkan region of Maharashtra, a population of an interesting epiphytic orchid
was observed near Kudavale sacred grove. After critical studies of the collected sample and review of literature
(Pande et al. 2010; Rao & Sridhar 2007) this orchid was identified as Smithsonia straminea C.J. Saldanha. Scrutiny of available floristic
literature and works on orchids (Mistry 1986; Lakshminarasimhan 1996; Almeida
2009) also revealed that so far this taxon is known only from Karnataka and
Kerala. Therefore, this is the
first report of occurrence of the taxa in Maharashtra, indicating its extended
distribution.
Saldanha (1976) described Smithsonia straminea based on collections from
Hassan District, Karnataka. Joseph
& Vajravelu (1979) reported its extended distribution in Kerala. Kumar et al. (2000) added a few more
locations in Kerala for its occurrence. The status of this Western Ghats endemic orchid has been evaluated as
Endangered (EN) following the IUCN criteria 2000 (Kumar et al. 2000). As this paper reports its extended
distribution to the north, this assessment needs to be re-evaluated. Since this is the first report of its
occurrence in Maharashtra, a brief description of the species, ecological notes
and field photographs (Image 1) are provided below to facilitate easy
identification. The voucher
specimens are deposited in Agharkar Herbarium (AHMA) of the Agharkar Research
Institute, Pune.
Smithsonia straminea C.J.
Saldanha, J. Bombay Nat. Hist. Soc. 71: 73. 1974; Saldanha in Saldanha
& Nicolson, Fl. Hassan Dist. 850. 1976. Loxoma straminea (Saldanha) U.C. Pradhan,
Indian Orchids 2: 718.1979; Karthikeyan, et al. Florae Indicae Enumeratio
Monocotyledonae 150. 1989. (Image 1).
Epiphytic herbs; Roots 3–6,
arising from the base of the stem, up to 10cm long. Stem very short. Leaves 2–4, distichous, coriaceous, elliptic-oblong and slightly
channeled, bilobed or entire at apex. Racemes 1–2, shorter than the leaves, 4–18 flowered. Flowers sessile, about 0.5cm across;
sepals straw colored with red spots, obovate, 1.5x3.0 mm; petals slightly
smaller and narrower, yellow with red spots, in some individuals red spots on
sepals and petals totally absent; lip immovable, spurred, 3-lobed; spur pink,
sub-conical or bacciform, 3–4 mm long; lateral lobes white, erect, acute;
mid-lobe white, transverse, arching downwards, entire, with a small knob near
the junction with the spur; anther cap yellowish; pollinia 2, deeply cleft;
stipe single, ending in viscidium. Rostellum 2-lobed. Capsule elliptic-obovate, ribbed, about 0.5x1.5 cm.
Locality and
ecological observations: The species was recorded in a mango plantation near the Kudavale
Sacred Grove in Kudavale Village along the Mandangad-Dapoli
Road in Dapoli Taluka, Ratnagiri District of Maharashtra at 17051’44.77’’N
& 73014’40.48’’E, elevation of 840m. At Kudavale, the species was seen growing as epiphytes on
lower branches of the trunks of Mangifera indica L. ‘Alphonso’ with other epiphytic orchid associates like Vanda testacea (Lindl.) Rchb. f., Cottonia
peduncularis (Lindl.) Rchb. f. and the fern Pyrrosia lanceolata (L.) Farw. The trees growing on the outskirts of the mango orchard had
predominant growths of orchids as compared to the trees inside the
orchard. The maximum and luxuriant
growth of these three species of orchids was noted on mango trees near the
stream. Approximately 110
individuals of Smithsonia straminea were observed as epiphytic on 12 mango trees out
of the total 60 trees growing in the orchard. The efforts to locate the species in nearby mango orchards,
forest areas and sacred groves were without success. Pande et al. (2010) had earlier observed the species growing
epiphytic on Terminalia alata Heyne ex Roth. in Belgaum District of Karnataka.
Flowering
Phenology: May–June.
Exsiccata: Kudavale, 18.v.2011, Datar
25345 & 25346 (AHMA) (Appendix 1 & 2).
References
Almeida, M.R. (2009). Flora of Maharashtra—Vol. Va. Blatter Herbarium, Mumbai, 245pp.
Joseph, V. & E.
Vajravelu (1979). First Report of Oberonia brachyphylla Blatt. & McCann and Smithsonia stramineaSaldanha
(Orchidaceae) in Kerala. Bulletin of Botanical Survey of India 20(1–4): 169.
Kumar, C.S., B.V. Shetty, D.
Bennet & S. Molur (2000). Report of the Conservation Assessment and Management Plan Workshop
on Endemic Orchids of the Western Ghats. Zoo Outreach, Organization & CBSG South Asia, Coimbatore,
India, 139pp.
Lakshminarasimhan, P.
(1996). Orchidaceae, pp. 8–64. In: Sharma, B.D., S. Karthikeyan,
& N. P. Singh (eds.). Flora of Maharashtra State, . Botanical Survey of India, Calcutta, 794pp.
Mistry, M.K. (1986). Flora of Ratnagiri
District. PhD Thesis submitted to Mumbai University, India. (Unpublished).
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S., N. Sant, V. Vishwasrao & M.N. Datar (2010). Wild Orchids of
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T.A. & S. Sridhar (2007). Wild Orchids in
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District, Karnataka, India. Amerind Pubication Co., New Delhi, 850pp.