Synonym: Lecanora persoonii.
Common name: sunken bloodspot lichen.
Haematomma persoonii is a crustose lichen that grows on trees, particularly oak and cedar, in shaded to partially shaded areas. In East and Central Texas, it forms reddish-brown to brownish-black patches with numerous red to dark red apothecia. The thallus is areolate to verruculose, and the photobiont is green. It prefers humid, mild environments, often found in riparian zones and woodland edges.
Sunken bloodspot lichen (Haematomma persoonii) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
Unnamed Road, Washington, TX 77880, USA
Sunken bloodspot lichen (Haematomma persoonii) on a petrified wood tomstone in Odd Fellow Cemetery. Anderson, Texas, December 31, 20181667 FM 149, Anderson, TX 77830, USA
Sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 20191205 Charles Ct, College Station, TX 77840, USA
Red apothecia of sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 20191205 Charles Ct, College Station, TX 77840, USA
Texture of sunken bloodspot lichen (Haematomma persoonii) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 20191406 Holik Dr, College Station, TX 77840, USA
Sunken bloodspot lichen (Haematomma persoonii) on an oak in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 201923200 Park Rd, Washington, TX 77880, USA
Sunken bloodspot lichen (Haematomma persoonii) and Lecanora on oak in Lick Creek Park. College Station, Texas, January 18, 2019
Sunken bloodspot lichen (Haematomma persoonii) on river birch in Lick Creek Park. College Station, Texas, January 18, 2019
Sunken bloodspot lichen (Haematomma persoonii) on a fallen oak twig in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Sunken bloodspot lichen (Haematomma persoonii) on an oak branch in Lick Creek Park. College Station, Texas, February 3, 20192000 Campbell Ct, College Station, TX 77845, USA
Sunken bloodspot lichen (Haematomma persoonii) on an oak in Lick Creek Park. College Station, Texas, February 3, 20192000 Campbell Ct, College Station, TX 77845, USA
Red patch of sunken bloodspot lichen (Haematomma persoonii) on an oak in Lick Creek Park. College Station, Texas, February 3, 20192000 Campbell Ct, College Station, TX 77845, USA
Sunken bloodspot lichen (Haematomma persoonii) on an oak twig in Lick Creek Park. College Station, Texas, February 3, 20192000 Campbell Ct, College Station, TX 77845, USA
Sunken bloodspot lichen (Haematomma persoonii) on a deciduous tree in Old Independence Cemetery near Independence. Texas, February 10, 20198675 Coles Rd, Brenham, TX 77833, USA
Sunken bloodspot lichen (Haematomma persoonii) on a fallen oak on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019Lone Star Hiking Trail, Huntsville, TX 77340, USA
Sunken bloodspot lichen (Haematomma persoonii) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 201923200 Park Rd, Washington, TX 77880, USA
Sunken bloodspot lichen (Haematomma persoonii) in Lick Creek Park. College Station, Texas, June 17, 2019
Lecanora lichen together with Pertusaria and Haematomma persoonii in Lick Creek Park. College Station, Texas, June 17, 2019
Warty lichen (Pertusaria) together with Ochrolechia pallescens and Haematomma persoonii in Lick Creek Park. College Station, Texas, June 17, 2019
Pertusaria, Ochrolechia pallescens and Haematomma persoonii lichens on a branch of a small oak in Lick Creek Park. College Station, Texas, June 17, 2019
Pertusaria and sunken bloodspot (Haematomma persoonii) lichens on a dry oak in Lick Creek Park. College Station, Texas, January 23, 20202000 Campbell Ct, College Station, TX 77845, USA
Sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Close-up of sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Sunken bloodspot lichen (Haematomma persoonii) with other crustose lichens on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Texture of sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Sunken bloodspot lichen (Haematomma persoonii) with moss and other crustose lichens on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Pattern od sunken bloodspot lichen (Haematomma persoonii) on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USAThe sunken bloodspot lichen (Haematomma persoonii) was observed in East and Central Texas from December 2018 to December 2020. The lichen was found on various substrates including hackberry, oak, river birch, and petrified wood tombstones. Observations were made in multiple locations, including Washington-on-the-Brazos State Historic Site, Lick Creek Park, Sam Houston National Forest, and Old Independence Cemetery. The lichen was often found growing with other species, such as Lecanora and Pertusaria. The observations highlight the lichen's presence on deciduous trees, particularly oak, and its ability to grow on fallen branches and trunks. The texture and pattern of the lichen were also documented, showcasing its distinctive red apothecia and sunken appearance. Overall, the observations demonstrate the widespread distribution of Haematomma persoonii in East and Central Texas.
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