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Myrcia paganii

(Ausu)

Overview

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Critically Endangered

Threat status

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in English:

Ausu

Common Names in Spanish:

Ausú

Description

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Family Myrtaceae

Trees or shrubs , evergreen , usually with essential oils-containing cavities in foliage , branchlets , and flowers. Stipules absent or small and caducous . Leaves opposite, occasionally alternate, occasionally ternate or pseudo-whorled; leaf blade with secondary veins pinnate or basal, often with intramarginal veins near margin , margin usually entire. Inflorescences axillary or terminal , cymose but variously arranged, 1- to many-flowered. Flowers bisexual , sometimes polygamous, actinomorphic . Hypanthium usually adnate to ovary and prolonged above it. Calyx lobes (3 or) 4 or 5 or more, distinct or connate into a calyptra. Petals 4 or 5, sometimes absent, distinct or connate into a calyptra, sometimes coherent and pseudocalyptrate. Stamens usually numerous , in 1 to several whorls; filaments distinct or connate into 5 bundles opposite petals; anthers 2-celled, dorsifixed or basifixed , dehiscing longitudinally or rarely terminally; connectives usually terminating in 1 or more apical glands . Ovary inferior, semi-inferior, or very rarely superior, carpels 2 to more, locules 1 to many, pseudoseptum sometimes present, placentation usually axile but occasionally parietal ; ovules 1 to several per locule. Style single; stigma single. Fruit a capsule, berry, drupaceous berry, or drupe, 1- to many-seeded. Seeds without endosperm or endosperm sparse and thin; testa cartilaginous or thinly membranous, sometimes absent; embryo straight or curved .

About 130 genera and 4500-5000 species: Mediterranean region, sub-Saharan Africa, Madagascar, tropical and temperate Asia, Australia, Pacific islands, tropical and South America; 10 genera (five introduced ) and 121 species (50 endemic, 32 introduced treated here) in China.

Many Myrtaceae are cultivated garden ornamentals , street trees, or plantation trees. Some members of tribe Syzygieae are grown as fruit crops. In addition to the cultivated members of the family treated here, some others grown in China include Acca sellowiana (O. Berg ) Burrett (Feijoa sellowiana (O. Berg) O. Berg), Myrtus communis Linnaeus, and Syncarpia glomulifera (Smith) Niedenzu.[1]

Physical Description

Habit: Tree , Shrub

Habitat

Biome: Terrestrial [2].

Ecology: Moist limestone forest .[2].

Biology

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Reproduction

Duration: Perennial

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: 11-Nov-2003

Similar Species

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Members of the genus Myrcia

ZipcodeZoo has pages for 11 species, subspecies, varieties, forms, and cultivars in this genus:

M. citrifolia (Red Rodwood) · M. citrifolia var. citrifolia (Red Rodwood) · M. deflexa (Cieneguillo) · M. fallax (Curame) · M. leptoclada (Guayabacon) · M. margarettiae (Margarett's Myrcia) · M. maricaensis (Maricao Rodwood) · M. multiflora var. glauscens (Pedra Hume) · M. paganii (Ausu) · M. selloi (Myrcia) · M. splendens (Punchberry)

More Info

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Further Reading

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Notes

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Contributors

Identifiers

Footnotes

  1. Jie Chen & Lyn A. Craven "Myrtaceae". in Flora of China Vol. 13 Page 321. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. World Conservation Monitoring Centre 1998. Myrcia paganii. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 02 February 2012. [back]
Last Revised: 2012-04-18