Amasonia L.f.

First published in Suppl. Pl.: 48 (1782)
This genus is accepted
The native range of this genus is Tropical America. The hybrid formula is , nom. cons..

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
Shrubs, subshrubs and perennial herbs
Morphology Leaves
Leaves usually alternate (occasionally opposite), sessile or short-petiolate, oblanceolate to obovate or elliptical, variously toothed to repand (rarely entire)
Morphology Reproductive morphology Inflorescences
Inflorescence a terminal thyrse or raceme
Morphology Reproductive morphology Inflorescences Bracts
Bracts brightly coloured, red to purple or yellow
Morphology Reproductive morphology Flowers Calyx
Calyx bright red or purple, actinomorphic, accrescent or not, 5-lobed
Morphology Reproductive morphology Flowers Corolla
Corolla yellow to white, subactinomorphic to weakly zygomorphic, 5-lobed, anterior lobe usually largest
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, didynamous, exserted, filaments straight or upcurved (probably varying with stage of anthesis), anthers versatile, thecae parallel, separate at dehiscence
Morphology Reproductive morphology Flowers Pollen
Pollen with supratectal spinules
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary unlobed
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma lobes subequal to unequal
Morphology Reproductive morphology Flowers Disc
Disc absent
Morphology Reproductive morphology Fruits
Fruit drupaceous with four 1-seeded pyrenes; endosperm absent.
Note
Eight species of northern and central South America.
Distribution
Native to: Caribbean, Northern South America, Western South America, Brazil and Southern South America
[LKGF]

Sources

  • 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 Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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