Sphenodesme Jack

First published in Malayan Misc. 1(1): 19 (1820)
This genus is accepted
The native range of this genus is India to S. China and W. Malesia.

Descriptions

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Climbing shrubs
Morphology Leaves
Leaves entire
Morphology Reproductive morphology Inflorescences
Inflorescence often paniculate, terminal and axillary, usually with elongate, thyrsoid branches from axils of reduced leaves, cymes 3, 5 or 7-fld, pedunculate
Morphology Reproductive morphology Inflorescences Bracts
Bracts small, leaf-like, caducous
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles of involucre 6, accrescent, usually conspicuous in fruit, often greenish
Morphology Reproductive morphology Flowers Calyx
Calyx narrowly infundibular, 5-10-nerved , ± accrescent, often inflated in fruit, usually actinomorphic, 5-6(-7)-lobed, rarely irregularly lobed, 5-merous species mostly with bifid or emarginate lobes, often inflexed and appearing 10-lobed, sometimes with
Morphology Reproductive morphology Flowers Corolla
Corolla white, pale yellow or bluish to dark purple, longer than calyx, actinomorphic or slightly irregular, 5-6(-7)-lobed, lobes usually subequal, linear, acute to obovate-oblong and rounded, corolla tube slightly exserted from calyx, straight, hairy-ann
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5 or 6(-7), 5-merous species usually with equal, exserted, isomerous with corolla-lobes and alternating with them, 6-merous flowers with short-filamented stamens included within corolla-tube, thecae elliptic-ovoid, parallel, separate
Morphology Reproductive morphology Flowers Gynoecium Style
Style filiform, long and exserted from corolla or very short, stigma-lobes 2, subequal
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary usually hairy or glandular towards apex.
Note
About 14 species. Munir (1966) recognized two sections: Sect. Sphenodesme: Stamens exserted from corolla-tube, filaments elongate, style elongate, epicalyx often present, flowers 5-merous.   Sect. Brachynema (Griff.) Clarke: Stamens included in corolla-tu
Distribution
India, China, Burma and Thailand to Malaysia
[LKGF]

Sources

  • Herbarium Catalogue Specimens

  • Interactive Key to Seed Plants of Malesia and Indo-China

    • The Malesian Key Group (2010) Interactive Key to Seed Plants of Malesia and Indo-China (Version 2.0, 28 Jul 2010) The Nationaal Herbarium Nederland Leiden and The Royal Botanic Gardens Kew
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Lamiaceae Key Genus Fact Sheets

    • Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
    • http://creativecommons.org/licenses/by/3.0