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).

    [KBu]

    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 https://doi.org/10.1007/s12225-015-9564-y

    Type
    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!).
    Habit
    Profusely dichotomous branched erect ephemeral herbs, 5 – 20 cm tall; stem acutely 4-angled, angles minutely winged, glabrous
    Leaves
    Leaves linear-lanceolate, sparsely scabrid, sessile, 1-nerved, apex acute, base attenuate, 10 – 20 × 5 – 8 mm
    Stipules
    Stipules with 2 – 3 bristles, base broad up to 5 mm, bristles 2 – 4 mm long
    Inflorescences
    Inflorescence axillary, solitary or terminal 2 – 4-flowered cymes
    Flowers
    Flowers, 5 – 7 × 4 – 6 mm; pedicel 4 – 6 mm long
    Hypanthium
    Hypanthium ovoid, puberulous; calyx lobes 4, 0.7 – 1 × 0.5 – 0.7 mm, acute at tip, margins setulose
    Corolla
    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
    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
    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
    Fruits
    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
    Distribution
    India, Kerala
    Ecology
    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).
    Conservation
    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).
    Note
    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.

    Distribution

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

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

    Literature

    Kew Bulletin
    • Sasidharan, N. (2013). Flowering plants of Kerala: CD-ROM ver 2.0. Kerala Forest Research Institute, Peechi.Google Scholar
    • Wikstrom, N., Neupane, S., Karehed, J., Motley, T. J. & Bremer, B. (2013). Phylogeny of Hedyotis L. (Rubiaceae: Spermacoceae): Redefining a complex Asian-Pacific assemblage. Taxon 62: 357 – 374.Google Scholar
    • IUCN (2012). IUCN Red List Categories and Criteria: Version 3.1. 2nd Edn. International Union for Conservation of Nature and Natural Resources, Gland and Cambridge.Google Scholar
    • Govaerts, R., Andersson, L., Robbrecht, E., Bridson, D., Davis, A., Schanzer, I. & Sonke, B. (2011). World checklist of Rubiaceae. Royal Botanic Gardens, Kew.Google Scholar
    • Neupane, S., Dessein, S. & Motley, T. J. (2009). The Hedyotis–Oldenlandia–Kohautia complex (Rubiaceae) in Nepal: a study of fruit, seed and pollen characters and their taxonomic significance. Edinburgh J. Bot. 66: 371 – 390.Google Scholar
    • Dutta, R. & Deb, D. B. (2004). Taxonomic revision of Hedyotis L. (Rubiaceae) in Indian subcontinent. Flora of India. Series 4: 140. Botanical Survey of India, Kolkata.Google Scholar
    • Bremer, B. & Manen, J. F. (2000). Phylogeny and classification of the subfamily Rubioideae (Rubiaceae). Pl. Syst. Evol. 225: 43 – 72.Google Scholar
    • Vajravelu, E. (1990). Flora of Palghat District, Pp. 239 – 241. Botanical Survey of India, Calcutta.Google Scholar
    • Manilal, K. S. & Sivarajan, V. V. (1982). Flora of Calicut: the flowering plants of the Greater Calicut area consisting of the western sectors of Calicut and Malappuram Districts, Pp. 139 – 143. Bishen Singh Mahendra Pal Singh, Dehradun.Google Scholar
    • Bremekamp, C. E. B. (1974). A new species of Oldenlandia (Rubiaceae) from India with remarks on its inflorescence morphology. Kew Bull. 29: 359 – 361.Google Scholar
    • Gamble, J. S. & Fischer, C. E. C. (1923). Flora of the Presidency of Madras. Newman & Adlard, London. (Reprint ed. Vol. II, 1957. Botanical Survey of India, Calcutta), 2: 968 – 970.Google Scholar
    • Hooker, J. D. (1880). Order LXXV. Rubiaceae. In: J. D. Hooker (ed.), Flora of British India, Vol. 3: 17 – 210. Reeve, London.Google Scholar
    • Linnaeus, C. (1753). Species plantarum 1: 119. Laurentius Salvius, Stockholm.Google Scholar

    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Bulletin
    Kew Bulletin
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0