Journal of Threatened Taxa | www.threatenedtaxa.org | 26 October 2020 | 12(14): 17045–17048
ISSN 0974-7907 (Online) | ISSN 0974-7893 (Print)
#4978 | Received 23 March 2019 | Final received 19 July 2020 | Finally accepted 29 September 2020
New distribution record of two endemic plant species, Euphorbia kadapensis Sarojin. & R.R.V. Raju (Euphorbiaceae) and Lepidagathis keralensis Madhus. & N.P. Singh (Acanthaceae), for Karnataka, India
P. Raja 1, N. Dhatchanamoorthy 2, S. Soosairaj 3 & P. Jansirani 4
1 PG & Research Department of Botany, J.J. College of Arts and Science (Autonomous), Pudukkottai, Tamil Nadu 622422, India.
2 National Herbarium of Medicinal Plants and Repository of Raw Drug, School of Conservation of Natural Resources, Trans Disciplinary University (TDU), Foundation for Revitalisation of Health Traditions (FRLHT), 74/2, Jarakabande Kaval, Yelahanka, Bengaluru,
Karnataka 560064, India.
3 Department of Botany, St. Joseph’s College (Autonomous), Tiruchirappalli, Tamil Nadu 620002, India.
4 PG & Research Department of Botany, The Madura College (Autonomous), Madurai, Tamil Nadu 625011, India.
1 email@example.com (corresponding author), 2 firstname.lastname@example.org, 3 email@example.com, 4 firstname.lastname@example.org
Euphorbia L., sensu lato is a cosmopolitan genus distributed almost throughout the world. It comprises 1,836 species in the world, of which 84 species indigenous or naturalized and three species are cultivated in India (Binojkumar & Balakrishnan 2010, 2012). Recently Euphorbia kadapensis Sarojin. & R.R.V. Raju (2014), Euphorbia gokakensis S.R. Yadav, Malpure & Chandore (2016), and Euphorbia seshachalamensis Prasad & Prasanna (2016) were added to the Indian flora as new species.
Lepidagathis Willd. comprises about 100 species, mainly distributed in the tropical and warm regions of the world (Mabberley 2017). In India, the genus is represented by 23 species and eight varieties, among them 15 species are endemic to the Western Ghats and Eastern Ghats of southern India (Nayar et al. 2014; Singh et al. 2015).
During a recent botanical exploration in Karnataka
State, we collected specimens of two interesting species of the genera Euphorbia
and Lepidagathis. After thorough scrutiny in previously
published Floras and research articles (Binojkumar
& Balakrishnan 2010, 2012; Sarojinidevi & Reddivenkatraju 2014; Madhusoodanan
& Singh 1992), they were identified as E. kadapensis
Sarojin. & R.R.V. Raju (Euphorbiaceae),
endemic to Andhra Pradesh and L. keralensis
Madhus. & N.P. Singh (Acanthaceae),
an endemic species of Kerala. Euphorbia
kadapenis was described by Sarojinidevi
& Raju in 2014 from the Kadappa District of
Andhra Pradesh while L. keralensis was
described by Madhusoodanan & Singh in 1992 from
the west coast of Kerala and so far has not been reported from Karnataka. Hence the present collections form new
distributional records of the species for Karnataka.
A brief description, distribution and photographs are provided here for easy identification.
Euphorbia kadapensis Sarojin. & R.R.V. Raju
Phytotaxa 181(3): 179, ff. 1‒2. 2014. (Image 1, 2)
Slender herb, erect‒decumbent, 10‒25 cm long. Stem terete, dichotomously branched, greenish-pink, glabrous‒sparsely pubescent, nodes thickened, latex milky; stipules scaly, 1mm long, shortly laciniate. Leaves simple, opposite, oblong, 5‒20 × 3.5‒9.5 mm, base oblique, apex obtusely acute, margins distantly serrulate, apiculate, glabrous, glaucous beneath, mid-nerve prominent, lateral nerves 4‒7 pairs. Petioles 1‒1.5 mm long. Cyathia terminal and subterminal. Involucre turbinate, ca 4 × 2 mm, glabrous; lobes 5, laciniate; glands 4, yellow, appendages of glands 2 × 2 mm, white‒pink. Pistillate flowers 5.5 × 3.0 mm, glabrous, pedicel 2.5‒3 mm long; pistil tricarpellary; style 3, free from base, 2mm long; stigma simple. Fruiting pedicel pendulous. Capsule trigonus, glabrous, 3‒4 mm long; seeds 3, brownish, 2 × 1.5 mm, oblong‒ovate, tetragonal, transversely ridged, truncate at base,
Specimens Examined: Karnataka: Yadgiri District, Royangole, 16.280°N & 76.393°E, 484m, 01.ix.2017, P. Raja 2586. Belagavi District, Midukanatti, 16.022°N & 74.768°E at 742m, 07.x.2017, P. Raja 2407.
Flowering & Fruiting: September to November.
Habitat & Ecology: This species is located at dry deciduous forests and are associated with Dodonaea viscosa (L.) Jacq., Mundulea sericea (Willd.) A.Chev., Cyanotis tuberosa (Roxb.) Schsult. & Schult.f., Phyllanthus maderaspatensis L. and Oropetium thomaeum (L.f.) Trin.
Distribution: Endemic to peninsular India previously known only from the Kadappa District of Andhra Pradesh. Now its distribution is extended up to Karnataka.
IUCN status: Not evaluated.
Lepidagathis keralensis Madhus. & N.P. Singh
Kew Bull. 47: 301, f.3. 1992. (Image 3)
Prostrate herb, rootstock woody. Stem quadrangular, much branched, rooting at nodes, glabrous. Leaves oblong‒lanceolate, 10 × 3 mm, base acute, apex acute‒acuminate, margins entire with purple, glabrous, nerves prominent, 3–4 pairs. Spikes 1‒3, terminal, procumbent, 2cm long. Flowers pink with yellow palate, sessile, 1cm long; sterile bracts many, oblong‒lanceolate, 10‒13 × 3.5‒4.0 mm, densely pubescent, 5-nerved, sharply pointed mucronate at apex, ca 1.5mm long, persistent. Calyx deeply 5-lobed; lobes unequal, 8‒8.5 × 2‒2.5 mm, persistent, similar to bracts, villous. Corolla 8.5‒10.0 mm long, densely pubescent in bud, tube cylindric below, ca 3mm long, 2-lipped; upper lip 2-lobed, erect or reflexed; lower lip 3-lobed. Stamens 4, didynamous, ca 6 mm long, sparsely hairy, anthers 2-celled, 1.5‒2.0 mm long, pubescent. Disc annular. Pistil ca 8 mm long; ovary subglobose‒ovoid, 1.5‒2.0 mm long, 2-celled, glabrous, ovules 2; style slender, 6.5‒8.0 mm long, pubescent at lower ventral region with glands; stigma capitate, slightly bifid. Capsule compressed, ca 6mm long, glabrous; seeds 2, flat, soft, pubescent with white aril.
Specimens examined: Karnataka, Udupi District, Hiriadica, 13.303°N & 74.855°E at 37m, 25 March 2018, P. Raja, 2529.
Flowering & Fruiting: February to April.
Habitat & Ecology: This species is found growing in open places at the forest border, with Naregamia alata Wight & Arn., Ixora coccinea L., and Canthium coromandelicum (Burm.f.) Alston.
Distribution: Endemic to peninsular India in the western coast of Kerala and Karnataka at low elevations.
IUCN status: Not evaluated
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Mabberley, D.J. (2017). Mabberley’s Plant Book: A portable dictionary of plants, their classification, and uses. Fourth Edition. Cambridge University Press, UK, 1102pp.
Madhusoodanan, P.V. & N.P. Singh (1992). A New Species of Lepidagathis (Acnathaceae) from South India. Kew Bulletin 47(2): 301‒303.
Malpure, N.V., A.N. Chandore & S.R. Yadav (2016). Euphorbia goka-kensis (Euphorbiaceae) from sandstone formations in Karnataka, India. Nordic Journal of Botany 34(3): 380–383. https://doi.org/10.1111/njb.00997
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Sarojinidevi, N. & R. Reddyvenkatraju (2014). Euphorbia kadapensis (Euphorbiaceae), a new species from southern India. Phytotaxa 181(3): 179–183. http://doi.org/10.11646/phytotaxa.181.3.6
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