Synonyms: Bacidia abducens, Bacidia abductans, Bacidia melanocardia, Bacidia nigra, Biatora schweinitzii, Lecidea abducens, Lecidea abductans, Patellaria granulosa, Toninia granulosa.
Common name: Surprise Lichen.
Bacidia schweinitzii is a crustose lichen species characterized by its pinkish to yellowish-gray thallus and numerous, immersed to slightly raised apothecia. In East and Central Texas, it typically grows on trees, particularly oak and elm, as well as on rock outcrops and soil. The apothecia are 0.1-0.5 mm in diameter, with a pale yellow to orange disc and a thin, concolorous margin. The species is relatively common in the region, often found in shaded to partially shaded areas with high humidity.
Surprise lichen (Bacidia schweinitzii) on a holly tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019
Lone Star Hiking Trail, Shepherd, TX 77371, USA
Surprise lichen (Bacidia schweinitzii) at the base of a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Surprise lichen (Bacidia schweinitzii) with black apothecia in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Surprise lichen (Bacidia schweinitzii) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Shepherd, TX 77371, USA
Surprise lichen (Bacidia schweinitzii) on a tree near the creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USAObservations of Bacidia schweinitzii in East and Central Texas reveal its presence on various substrates. The species was found on a holly tree and at the base of trees in Big Creek Scenic Area of Sam Houston National Forest, Shepherd, Texas. On January 5, 2019, specimens with black apothecia were observed. Further observations on February 1, 2019, confirmed its presence on trees near the creek. The lichen appears to thrive in this region, with multiple sightings within a short period. The consistent presence of Bacidia schweinitzii in Big Creek Scenic Area suggests it may be a common species in East and Central Texas, particularly in areas with suitable tree habitats. Repeated observations on different dates indicate its stability and persistence in the area.
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