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
Sources
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Herbarium Catalogue Specimens
- Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
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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
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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
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Lamiaceae Key Genus Fact Sheets
- Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
- http://creativecommons.org/licenses/by/3.0