Heterodermia pindurae (Physciaceae) - a new foliose lichen from Rwanda Author Fischer, Eberhard Author Killmann, Dorothee Author Ertz, Damien Botanic Garden Meise, Department Bryophytes-Thallophytes (BT), Nieuwelaan 38, B- 1860 Meise, Belgium; & Fédération Wallonie-Bruxelles, Direction Générale de l’Enseignement non obligatoire et de la Recherche scientifique, Rue A. Lavallée 1, B- 1080 Bruxelles, Belgium. Author Sérusiaux, Emmanuël text Phytotaxa 2017 2017-06-30 311 3 277 282 http://dx.doi.org/10.11646/phytotaxa.311.3.8 journal article 311047 10.11646/phytotaxa.311.3.8 058c5a0d-6d6c-44c0-85da-0874ba6b6878 1179-3163 13701600

TABLE 1. Differences between Heterodermia pindurae, H. subcomosa and H. pellucida.

Characteristic features	Heterodermia pindurae	Heterodermia subcomosa	Heterodermia pellucida
Thallus (cm)	0.3–0.6	2–5	3–3.5
Thallus lobes	all lobes with apothecia	lobes with and without	all lobes with apothecia
		apothecia
Colour of cilia/rhizines	rhizines greyish to blackish	rhizines concolourous with the	cilia and rhizines concolourous
		thallus, greyish-white	with the thallus, darkening
			towards apices
Laciniae	absent	ascending or suberect,	ascending or suberect, branched
		dichotomously branched
Apothecium structure	terminal, pedicellate,	subterminal or terminal,	first laminar, then terminal,
		pedicellate, margins crenate or	subpedicellate
		shortly lacinulate
Chemistry	thallus K+ yellow, medulla K+	thallus K+ yellow, medulla K +	thallus K+ yellow, medulla K+
	yellow, C-, KC+ yellow, PD +	yellow, C-, PD-	yellow, C-, KC-, PD- or PD
	yellow		faint yellow