Mycena chloroxantha is a species of mushroom that grows on decaying wood, typically in clusters. It has a small to medium size cap, 1-4 cm in diameter, that is bell-shaped to conic, and ranges in color from yellowish-green to greenish-yellow. The gills are narrowly attached and the stem is slender, 2-6 cm long, and hollow. In East and Central Texas, Mycena chloroxantha can be found growing on logs, stumps, and other decaying wood in woodland areas, particularly in the fall season. It is a relatively common species in the region, often found in association with oak and pine trees.
Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) and a small marasmoid mushroom with widely spaced gills on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, May 5, 2018
Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, May 5, 2018
Close up of Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, May 5, 2018
Mushroom Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, September 15, 2018
Tiny mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on pine needles on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 22, 2020
Tiny mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on fallen oak leaves on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 22, 2020
Crust fungus Dendrothele candida on a fallen oak together with Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on Richards Loop Trail in Sam Houston National Forest. Texas, April 8, 2023
Mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on oak twigs and pine needles on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Masses of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on wood debris on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Side view of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Spores and acanthocytes (spiny cells) of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Spores (in Congo Red) of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Spores and tissue of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Acanthocytes (swollen or irregularly shaped cells that feature conspicuous, thorny projections, spicules) of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Tissue and basidia of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Acanthocyte (spiny cell) and spores of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026
Spores and basidia (in Congo Red) of mushrooms Mycena chloroxantha var. appalachienensis (Mycena sect. Sacchariferae) from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026Observations of Mycena chloroxantha in East and Central Texas reveal its presence in various locations within the Sam Houston National Forest. On May 5, 2018, and September 15, 2018, the fungus was found on the Caney Creek section of the Lone Star Hiking Trail near Huntsville, growing with widely spaced gills. Later observations on March 22, 2020, discovered tiny mushrooms on pine needles and fallen oak leaves near Pole Creek in Richards, Texas. Another sighting on April 8, 2023, found the fungus alongside crust fungus Dendrothele candida on a fallen oak on the Richards Loop Trail. These findings suggest that Mycena chloroxantha var. appalachienensis thrives in the forest's diverse environments, often growing on decaying organic matter like leaves and pine needles. Its small size and marasmoid shape are notable characteristics of this species.
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