Parmotrema specimen 2

Feldberg, Kathrin, Kaasalainen, Ulla, Mamontov, Yuriy S., Gradstein, S. Robbert, Schäfer-Verwimp, Alfons, Divakar, Pradeep K. & Schmidt, Alexander R., 2025, Extending the fossil record of Miocene neotropical epiphyte communities, Fossil Record 28 (1), pp. 79-102 : 79-102

publication ID	https://doi.org/10.3897/fr.28.137758
publication LSID	lsid:zoobank.org:pub:A10C1262-F859-4004-A83C-C8F032C1156A
DOI	https://doi.org/10.5281/zenodo.14947559
persistent identifier	https://treatment.plazi.org/id/CB108EEC-9EB1-5CA9-81CF-D92C76327C05
treatment provided by	by Pensoft
scientific name	Parmotrema specimen 2
status

Treatment

Parmotrema specimen 2 View in CoL View at ENA

Specimen.

Stuttgart State Museum of Natural History, Germany ( SMNS), SMNS -DO-4929-M .

Age and stratigraphic level.

15‒20 Ma, Langhian – Burdigalian (early to middle Miocene), La Toca Formation, Dominican Republic.

Description.

Three lichen fragments situated very closely together, most probably originating from the same thallus (Fig. 7 E View Figure 7 ); whole inclusion approximately 5.0 × 2.4 mm in diameter. Thallus foliose, lobate. Lobes flat, broad to linear, 0.4–1.0 mm wide, lobe apices truncate to rounded (Fig. 7 E View Figure 7 ). Upper surface smooth and brown, with dark margins (Fig. 7 D View Figure 7 ). Marginal cilia dark, branched, and long (up to 0.8 mm) (Fig. 7 E View Figure 7 ). Medulla not visible. Lower cortex dark. Rhizines dark. Pycnidia abundant on the upper surface (Fig. 7 D View Figure 7 ). Apothecia, isidia, or soredia not present.

Discussion.

The general habit, very long, branched marginal cilia, and dark lower surface identify the specimen as Parmotrema . Of the infrageneric groups, the dark lower surface without rhizines reaching the margins could represent, for example, the Parmotrema s. str. group.