Isodon walkeri (Arn.) H.Hara

This species is accepted, and its native range is S. India to S. China.

[KBu]

Suddee, S., A. J. Paton, & Parnell, J. (2004). A Taxonomic Revision of Tribe Ocimeae Dumort. (Lamiaceae) in Continental South East Asia I. Introduction, Hyptidinae & Hanceolinae. Kew Bulletin, 59(3), 337-378. doi:10.2307/4110949

Distribution
India, Sri Lanka, South China, Burma, Laos & Vietnam.
Ecology
In sandy soil in river beds in mixed or evergreen forest, on rocks beside stream; 600 - 1200 m.
Morphology General Habit
Erect or ascending annual herb up to 80 cm tall
Morphology Leaves
Leaves chartaceous, narrowly lanceolate or elliptic-lanceolate, 15 - 110 x 7 - 25 mm, apex acute, base cuneate or attenuate and decurrent on petiole, margin serrate above the middle or for 2/s of leaves' length, entire below, scaberulous on midrib above and beneath, otherwise glabrous or glabrescent, dotted with minute sessile glands beneath or both sides, veins prominent beneath; petioles subsessile to 30 mm long, puberulous or pubescent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens long- exserted from anterior corolla lip, villous at base, posterior pair inserted near the base of corolla tube, anterior pair inserted around the middle or corolla tube
Morphology Reproductive morphology Flowers Calyx
Calyx tubular-campanulate, conspicuously 2-lipped, c. 2 mm long at anthesis, 3 - 5 mm long in fruit; posterior lip shortly 3-lobed, ovate, acute at apex, median lobe broadest; anterior lip 2-lobed, ovate-oblong, acute or obtuse at apex, subequal in length to posterior or longer; tube declinate, 10- nerved, twice as long as calyx teeth, puberulous on nerves, with sessile glands, not gibbous at anterior base
Morphology Reproductive morphology Flowers Corolla
Corolla white, straight, 6 - 7 mm long; posterior lip subequally and deeply 4-lobed, lobes obtuse or rounded at apex, slightly pubescent, with sessile glands on back; anterior lip orbicular, 2 - 3 mm long, equal or slightly longer than posterior, flattened, glabrous; tube straight, subtubular, 3- 4 mm long, only slightly gibbous above posterior base, slightly dilated at throat, pubescent on anterior side inside, glabrous or glabrescent outside
Morphology Reproductive morphology Flowers Disc
Disc obscurely lobed
Morphology Reproductive morphology Flowers Gynoecium Style
Style subequal to anterior stamens
Morphology Reproductive morphology Fruits
Nutlets brown, ovoid or oblong, 1 - 2 mm long, smooth or minutely tuberculate, not or slightly producing mucilage when wet.
Morphology Reproductive morphology Inflorescences
Inflorescence terminal, forming a narrow panicle, 5 - 15 cm long; axis with indumentum similar to stem; verticils 5 - 40 mm apart; cymes lax, few- to many-flowered, lateral branches short, not conspicuously cincinnate, each 2 - 3-flowered; bracts elliptic or lanceolate; bracteoles oblong or linear, 0.5 - 2 mm long, obtuse, ciliate, pubescent, persistent or caducous; pedicels slender, 2 - 4 mm long at anthesis, 2 - 7 mm long in fruit, pubescent
Morphology Stem
Stems sometimes rooting at nodes below, sometimes branched, quadrangular, puberulous below, strigose or puberulous above
Phenology
Flowering & fruiting November - February.
Type
Sri Lanka, Hb. Hort. Soc. 1839, Mackenzie s.n. (K!, neotype chosen here).

Native to:

China South-Central, China Southeast, India, Laos, Myanmar, Sri Lanka, Thailand, Vietnam, West Himalaya

Isodon walkeri (Arn.) H.Hara appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Jan 1, 2001 Kurz, S. [575], Myanmar K001067831 syntype Yes
Jan 1, 2001 MacKenzie, J. [s.n.], Sri Lanka K001067829 neotype Yes
Jan 1, 2001 Walker, A.M. [s.n.], Sri Lanka K001067830 syntype Yes
Jan 1, 2001 Kurz, S. [2405], Myanmar K001067832 syntype Yes
Jan 1, 1999 Brandis, D. [813], India Plectranthus brandisii K000357662 syntype Yes
Jul 14, 1999 Strachey, R. and J.E.Winterbottom [9], India Plectranthus stracheyi K000357661 holotype Yes
Strachey, R. and J.E.Winterbottom [9], India Plectranthus stracheyi K000357660 Unknown type material Yes

First published in J. Jap. Bot. 60: 237 (1985)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Suddee, S., Paton, A.J. & Parnell, J.A.N. (2004). A taxonomic revision of tribe Ocimeae Dumort. (Lamiaceae) in Continental South East Asia. I. Introduction, Hyptidinae & Hanceolinae Kew Bulletin 59: 337-378.
  • Trisarasri, P. & Suddee, S. (2009). Isodon walkeri (Lamiaceae), a new record for Thailand Thai Forest Bulletin (Botany) 37: 151-155.

Literature

Kew Backbone Distributions

  • Trisarasri, P. & Suddee, S. (2009). Isodon walkeri (Lamiaceae), a new record for Thailand Thai Forest Bulletin (Botany) 37: 151-155.

  • Herbarium Catalogue Specimens

    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. 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