Ramalina sarahae Knudsen et al.

Spjut, Richard, Simon, Antoine, Guissard, Martin, Magain, Nicolas & Serusiaux, Emmanuel, 2020, The fruticose genera in the Ramalinaceae (Ascomycota, Lecanoromycetes): their diversity and evolutionary history, MycoKeys 73, pp. 1-68 : 1

Ramalina sarahae Knudsen et al.

Remarks.

This species belongs to the Ramalina lacera group ( Sérusiaux et al. 2010). It was recently described from the Channel Islands in California, USA ( Knudsen et al. 2018). Its ITS sequence is available (Accession: NR_160636.1) and appears identical with all our accessions of R. lacera (sensu Nash et al. 2002) from Mexico/Baja California and Baja California Sur, one accession of R. lacera s.l. from the archipelago Cabo Verde in the Atlantic Ocean off the coast of Mauritania and several accessions from the coastal areas of Namibia that would all be referred to as R. lacera following Wirth (2010b). The discovery of R. sarahae , throughout most of the peninsula of Baja California, in the Namib desert and the Cabo Verde archipelago creates an interesting relationship between these regions and it is worth mentioning that R. sarahae cannot be detected in any of the three other archipelagoes forming Macaronesia: Canary Islands, Madeira and Azores.

Selected specimens examined.

Cape Verde archipelago - São Vicente, Monte Verde, just below the summit, NW slope; 16°52.2'N, 024°56.0'W; alt. 700 m; 2006; P. van den Boom 36603 & 36603b leg; on twigs (hb, LG DNA 1963 and 1964); [DNA 963: MN788729 (ITS); DNA 964: MN788730 (ITS)]; Namibia - East of the road Swakopmund-Henties Bay; 22°20.38'S, 014°26.44'E; alt. 20 m; 04.2016; E. Sérusiaux s.n leg.; desert dunes, on twigs in "lichen field" (LG DNA 5012); [DNA: MN788735 (ITS)] - Omaruru distr., Laguneberg, N of Mile 72; ca. 21°49.8'S, 014°04.6'E; alt. 70 m; 09.2007; V. Wirth 40683 & 40686 leg; on twigs (KR, LG DNA 563 and 564); [DNA 563: MN788727 (ITS); DNA 564: MN788728 (ITS)]; - N-E of Cape Cross, southern part of the Laguneberg Range; 21°39.31'S, 013°59.55'E; alt. 100-130 m; 04.2016; E. Sérusiaux leg; rocky outcrops in "lichen field", on twigs (LG DNA 5021); [DNA: MN788735 (ITS)] Mexico - Baja California, laguna and peninsula of San Quintín; 30°29.74'N, 116°00.04'W; alt. 4 m; 02.2016; heavily disturbed chaparral over volcanic rocks; R. Spjut & E. Sérusiaux 17032 leg; on branches of Aesculus parryi (hb WBA, LG DNA 4676; [DNA: MN788731 (ITS)] - Baja California, El Rosario, Punta Baja; 29°58.26'N, 115°47.26'W; alt. 70 m, 02.2016; R. Spjut & E. Sérusiaux 17090 leg; on twigs and branches of small shrub (hb WBA, LG DNA 4728); [DNA: MN788732 (ITS)]; - Baja California Sur, SE of Bahía de Asunción, near the coast; 27°09.81'N, 114°14.75'W; alt. 20 m; 02.2016; R. Spjut & E. Sérusiaux 17136 leg; on twigs; (hb WBA, LG DNA 4756); [DNA: MN788733 (ITS)] - Baja California Sur; along the road from Bahía de Tortugas to Vizcaíno; 27°37.82'N, 113°25.19'W; alt. 70 m; 02.2016; R. Spjut 17233c & E. Sérusiaux leg; on twigs (hb WBA, LG DNA 4823); [DNA: MN788734 (ITS)].