Synonyms: Coenogonium acrocephalum, Coenogonium rigidulum.
Common name: pixie-hair lichen.
Extract from Wikipedia article: Coenogonium implexum is a yellow-green byssoid lichen with light orange apothecia found in Australia. It is in the Coenogoniaceae family.
Coenogonium implexum is a species of crustose lichen that forms pale green to yellowish-green, irregular patches or strips on tree bark, rocks, and soil. In East and Central Texas, it typically grows on shaded, moist surfaces, such as the trunks and branches of trees like oak, maple, and cedar, as well as on boulders and moss-covered rocks. The thallus is 1-5 cm in diameter, with a smooth to slightly wrinkled surface, and lacks distinct lobes or branching. Apothecia are rare, but when present, they are cup-shaped and contain a yellowish to orange-brown spore mass. This species is common in the region's deciduous and mixed forests, particularly in areas with high humidity and moderate to low light levels.
Pixie-hair lichen (Coenogonium implexum) on a tree in shade in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) with apothecia in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) with Phyllopsora parvifolia in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) with brown apothecia on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Pixie-hair lichen (Coenogonium implexum) on a tree in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Pixie-hair lichen (Coenogonium implexum) in shade on a tree in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Masses of pixie-hair lichen (Coenogonium implexum) in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Close up of pixie-hair lichen (Coenogonium implexum) in shade on a tree in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Pixie-hair lichen (Coenogonium implexum) on atree in area of Caney Creek crossing on Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, February 9, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Pixie-hair lichen (Coenogonium implexum) on bark of hackberry in area of Caney Creek crossing on Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, February 9, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Pixie-hair lichen (Coenogonium implexum) on a tree in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close-up of pixie-hair lichen (Coenogonium implexum) at the base of a tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Pixie-hair lichen (Coenogonium implexum) on tree bark on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Veined mossear mushrooms (Rimbachia bryophila) together with pixie-hair lichen (Coenogonium implexum) at the base of an oak in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021151 Oxbo, Cleveland, TX 77328, USA
Pixie-hair lichen (Coenogonium implexum) with yellow apothecia at the base of an oak in Little Thicket Nature Sanctuary near Cleveland. Texas, June 26, 2021151 Oxbo, Cleveland, TX 77328, USA
Pixie-hair lichen (Coenogonium implexum) at the base of a living tree on Chasm Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United StatesObservations of Coenogonium implexum in East and Central Texas reveal that it commonly grows on trees in shaded areas, such as in the Big Creek Scenic Area of Sam Houston National Forest and the Little Thicket Nature Sanctuary near Cleveland. The lichen is often found with apothecia, which are reproductive structures, and can be accompanied by other species like Phyllopsora parvifolia. It grows on various tree species, including hackberry and oak, and can form large masses. The lichen has been observed in different locations within Sam Houston National Forest, including near Huntsville and Montgomery, and in Little Thicket Nature Sanctuary. In some cases, it co-occurs with other organisms like Veined mossear mushrooms. The observations span several years, from 2019 to 2024, and suggest that Coenogonium implexum is a relatively common species in the region.
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