Common name: lace-scale lichen.
Phyllopsora parvifolia is a foliose lichen species characterized by small, rounded to lobed leaves that are tightly appressed to the substrate. In East and Central Texas, it typically grows on trees, particularly oak and elm, in shaded to partially shaded areas. The thallus is 1-5 cm in diameter, with a pale green to yellow-green color, and lacks distinct marginal cilia or rhizines. Apothecia are rare, but when present, they are small and immersed in the thallus. This species is often found in association with other foliose lichens, such as Parmotrema and Hypotrachyna, in mature forests and along streams.
Lace-scale lichen Phyllopsora parvifolia on a magnolia(?) tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
Lone Star Hiking Trail, Coldspring, TX 77331, USA
Green patch of lace-scale lichen Phyllopsora parvifolia 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) 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
Lace-scale lichen Phyllopsora parvifolia 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
Brick-spored firedot lichen Brigantiaea leucoxantha with Phyllopsora parvifolia 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
Lichen Phyllopsora parvifolia or may be Cladonia on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Lace-scale lichen Phyllopsora parvifolia 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
Lace-scale lichen Phyllopsora parvifolia on a tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Partially dry lace-scale lichen Phyllopsora parvifolia on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lace-scale lichen (Phyllopsora parvifolia) on a tree on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 24, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USAObservations of Phyllopsora parvifolia in East and Central Texas show that it grows on various trees in the Sam Houston National Forest. The lichen was found in several locations, including Big Creek Scenic Area, Lone Star Hiking Trail, and Caney Creek Trail. It often co-occurs with other lichens, such as Coenogonium implexum and Brigantiaea leucoxantha. The observations were made over a period of two years, from 2019 to 2021, and during different seasons, indicating that the species is present in the area year-round. The lichen was observed on trees in varying conditions, including partially dry and green patches, suggesting its ability to adapt to different environments. The observations provide valuable information about the distribution and habitat of Phyllopsora parvifolia in East and Central Texas.
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