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  1. Family: Rubiaceae Juss.
    1. Genus: Oldenlandia L.
      1. Oldenlandia dineshii Sojan & V.Suresh

        This species is accepted, and its native range is India (Kerala).


    Jose, S., Nair, M.C., Prabhukumar, K.M. et al. 2015. Oldenlandia dineshii (Rubiaceae: Spermacoceae), a new species from the Palakkad Gap region of Western Ghats, India. Kew Bulletin 70: 13. DOI

    Type: India, Kerala, Palakkad Distr., Nemmara, 130 m asl (10°35'26.6352""N; 76°34'54.6024""E), 7 Aug. 2013, Sojan Jose & V. Suresh 083 (holotype CALI!; isotypes CMPR!, KFRI!, MH!).
    Profusely dichotomous branched erect ephemeral herbs, 5 – 20 cm tall; stem acutely 4-angled, angles minutely winged, glabrous
    Leaves linear-lanceolate, sparsely scabrid, sessile, 1-nerved, apex acute, base attenuate, 10 – 20 × 5 – 8 mm
    Stipules with 2 – 3 bristles, base broad up to 5 mm, bristles 2 – 4 mm long
    Inflorescence axillary, solitary or terminal 2 – 4-flowered cymes
    Flowers, 5 – 7 × 4 – 6 mm; pedicel 4 – 6 mm long
    Hypanthium ovoid, puberulous; calyx lobes 4, 0.7 – 1 × 0.5 – 0.7 mm, acute at tip, margins setulose
    Corolla broadly campanulate, dark blue; tube 2.5 – 4 mm long; lobes oblong, tip acute, 2.5 – 3.5 mm long, minutely pubescent outside and glabrous inside of the tube
    Stamens 4, inserted and introrse; filaments 0.7 – 1 mm long, hairy, included within the corolla lobes; anthers oblong, glabrous, 1 – 1.2 mm long
    Ovary 0.5 – 0.7 mm long, ovules numerous in each locule with axile placentation; stigma bifid, lobes 0.4 – 0.6 mm long, hispid; style glabrous
    Capsule ovoid, 2.5 – 3 × 1.5 – 2.5 mm, crown raised above; seeds many, angular, 0.3 – 0.5 × 0.3 – 0.5 mm
    India, Kerala
    Oldenlandia dineshii grows at about 130 m altitude on Hillocks of Nemmara, south of Palakkad in the valley of Nelliyampathy hills. The Palakkad district of Kerala is a biodiversity-rich area in the Nilgiriphyto-geographical region of the Western Ghats. Silent Valley, Nelliyampathy, Dhoni hills, Parambikulam and Attappady forest ranges come under Palakkad district and many endemic and endangered species are reported from here (Sasidharan2013).
    Apart from the type locality, we were unable to collect specimens of this species from anywhere else. According to our current knowledge of the species and using the IUCN strategies and Criteria (IUCN 2012), Oldenladiadineshii is tentatively classified as Endangered or EN B1ab (ii, iii).
    The new species shows similarity with Oldenlandiahygrophila and O. stocksii Hook. f. Flowering July – September; fruiting September – October. The species is named in honour of Prof. Dinesh Kumar T. K., Retired Professor of Botany, University College, Thiruvananthapuram, Kerala; a great teacher and taxonomist who stood away from the limelight of plant taxonomy by his own humility and unambitious nature. The new species is similar to Oldenlandia hygrophila in many attributes but differs by its glabrous, dichotomously branched stem with minutely winged angles, linear-lanceolate leaves, 2 – 4 mm long stipules, inflorescence with 2 – 4 cymes, 5 – 7 mm long large dark blue flowers, broadly companulate corolla with inserted stamens and bifid and scabrid stigma.


    Other Data

    Oldenlandia dineshii Sojan & V.Suresh appears in other Kew resources:


    First published in Kew Bull. 70(1)-13: 1 (2015)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.


    Kew Bulletin

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    © Copyright 2017 World Checklist of Selected Plant Families.

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    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.