Common names: cartilage lichen, Southern strap lichen.
Ramalina stenospora is a fruticose lichen species characterized by slender, greyish-green branches and small, cylindrical apothecia. In East and Central Texas, it typically grows on trees, especially oaks and elms, in open woodlands and along streams. The species is relatively common in the region, often forming dense colonies on bark and twigs. Its thallus can reach up to 10 cm in length, with branches sometimes becoming tangled or pendulous.
Southern strap (cartilage) lichen (Ramalina stenospora) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
705 Lakeview Ln, Somerville, TX 77879, USA
Southern strap lichen (Ramalina stenospora) on a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020815 Lakeview Ln, Somerville, TX 77879, USA
Southern strap (cartilage) lichen (Ramalina stenospora) on a tree in Antique Rose Emporium. Independence, Texas, May 16, 202010000 FM 50, Brenham, TX 77833, USA
Cartilage lichen (Ramalina stenospora) on a twig of upland swamp-privet bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021Lakeview Drive, Burleson County, Texas, United States
Cartilage lichen (Ramalina stenospora) on a twig a bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021Lakeview Drive, Burleson County, Texas, United States
Southern strap lichen (Ramalina stenospora) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
Southern strap lichen (Ramalina stenospora) on a twig of elm when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024Observations of Ramalina stenospora in East and Central Texas reveal its presence on various substrates, including small trees, bushes, and twigs. The lichen was found in half-open areas, such as Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park, and in more developed environments like the Antique Rose Emporium in Independence, Texas. It was observed growing on different species of plants, including upland swamp-privet bush and elm. The lichen's appearance remained consistent under regular daylight and when illuminated by a 365 nm ultraviolet (UV-A) blacklight, as seen in observations from Washington-on-the-Brazos State Historic Site. The species was spotted throughout the year, with sightings recorded in January, May, December, and August, indicating its persistence in the region across different seasons. Overall, Ramalina stenospora appears to be adaptable to various environments and substrates in East and Central Texas.
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