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Marasmius grandiviridis Wannathes, Desjardin & Lumyong

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Scientific name
Marasmius grandiviridis
Author
Wannathes, Desjardin & Lumyong
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Marasmiaceae
Assessment status
Assessed
Preliminary Category
EN C2ai
Proposed by
Nopparat Wannathes
Assessors
Nopparat Wannathes
Comments etc.
Gregory Mueller, Nopparat Wannathes

Assessment Notes

Justification

Marasmius grandiviridis is a very distinctive and conspicuous bright green mushroom restricted to moist broad-leaf evergreen subtropical forests. It is known only from northern Thailand and southwestern China at elevations between 1200-1700 meters.  It is anticipated that the species can also be found in Laos and Myanmar in similar habitats. Suitable habitat is restricted to relatively few fragmented patches scattered across the region.
Given the intensity of fungal survey work in the area, the distinctiveness of the species, and the restricted habitat that the known records have been found, it is estimated that there are no more than 2,000 mature individuals. Loss of habitat due to conversion of forests into tea and coffee plantations or other agricultural practices has occurred and continues throughout the region results in a decline in the species population. The species is assessed as Endangered due to its small population size that is under continuous decline.


Taxonomic notes


Why suggested for a Global Red List Assessment?

This species occurs in highland moist forests and is not often. And these known populations are limited. It is a rare species.


Geographic range

The species is known from 3 records from northern Northern Thailand, and 3 records from Yunnan, China. These areas have been surveyed for fungi by a number of mycologists over many years suggesting that the species is rare and restricted to higher elevations in moist evergreen broad-leaf forests.


Population and Trends

The species was described in 2009 from Chiang Mai, Thailand. A total of 6 records are known, three each from Northern Thailand and southwest China. Given the intensity of fungal survey work in the area and the restricted habitat that the known records have been found it is estimated that there are no more than 2,000 mature individuals.

Population Trend: Decreasing


Habitat and Ecology

This species is saprobic fungus growing on broad leaf litter on the ground. Basidiomata are gregarious to cespitose in moist evergreen forest at high elevation 1200-1700 m. alt.

Subtropical/Tropical Moist Montane Forest

Threats

Loss of habitat due to conversion of forests into tea and coffee plantations or other agricultural practices has occurred and continues throughout the region.

Agro-industry farming

Conservation Actions

Habitat protection.

Site/area protection

Research needed

Additional surveys are needed to determine the distribution and population size of the species.  Data on its ecology will help inform the understanding of its distribution and if the species is restricted to undisturbed sites.

Population size, distribution & trendsLife history & ecology

Use and Trade

Unknown

Bibliography


Country occurrence

Regional Population and Trends

Country Trend Redlisted