New species of Enterographa and Fulvophyton from Malaysia and Mexico

A new species of Enterographa (Arthoniales: Roccellaceae) is described. E. kinabaluensis from Kota Kinabalu is characterized by the presence of punctiform soralia and norstictic acid. The saxicolous Fulvophyton serusiauxii is described from coastal Mexico and differs from the corticolous F. klementii in having much smaller ascospores.

Enterographa subserialis and many other Sclerophyton species were transferred to Fulvophyton, which forms a strongly supported group. Fulvophyton is characterized by the usually white-pruinose, grouped punctiform ascomata, hyaline hypothecium and macrocephalic ascospores (Ertz & Tehler 2011). In this paper we describe further species in both genera, following the current classification.
Distribution and ecology. Only known from the type locality in coastal rainforest. Corticolous.
Etymology. Named after the type locality near Kota Kinabalu.

Fulvophyton serusiauxii
Chemistry. Thallus and ascomata C-, K+ yellow-red, PD+/-yellow, UV-; TLC: norstictic acid; amyloidy: asci and hymenium I+ red. Distribution and ecology. Only known from the type locality. Saxicolous on granite boulders on the Pacific Ocean shore. The tidal range along the coastline is very low, and contact with saltwater is probably limited to a few days in the hurricane season.
Etymology. The name is dedicated to Professor Emmanuël Sérusiaux on the occasion of his retirement from his position at the University of Liège.
Remarks. Very similar to the mainly corticolous Fulvophyton klementii, which has much larger ascospores (30 × 7.5 µm on average), shorter, ellipsoid ascomata, and ascomata not notably aggregated in pseudostromata. The saxicolous Enterographa subgelatinosa is also similar in appearance but it has a faint C+ red and P+ yellow reaction. Fulvophyton calcicola is known from the Atlantic coast in Florida; it grows on calcareous rock and contains no secondary compounds.