Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Perithecia: superficial, pale white to pink or orange, scattered or more rarely grouped, 150-300 µm in diam., becoming cupulate when dry, developing over an often reduced and indistinct subiculum ascomatal wall: hyaline to pale brown, K-, 30-45 µm thick, composed of two distinct layers: an outer layer of ±interwoven hyphae (textura intricata), and an inner layer of elongated cells (textura angularis or prismatica); external surface of perithecial wall with short hyaline hairs 10-20 x 2-3 µm hymenium: with an orange tinge, 45-60 µm tall periphyses: simple, 20-25 µm long asci: I-, 40-50 x 5-6.5 µm, 8-spored ascospores: uniseriate in asci, hyaline, 1-septate, ellipsoid to narrowly ellipsoid, rounded at the apices, not disarticulating, cells with 1-2 oil drops, slightly verruculose, not or slightly constricted at the septum, 8-12 x 3-4.5 µm Anamorph: unknown. Hosts: thalli of Collema, Degelia, Leptogium, Lobaria, Nephroma, Peltigera, Pseudocyphellaria, etc.; in the Sonoran area on Peltigera austroamericana World distribution: Europe, North America, Macaronesia, New Guinea Sonoran distribution: Baja California Sur and Chihuahua.