Veronica thessalica Benth.

Albach, Dirk C., 2025, From just a few to the most type-rich herbarium for Veronica L. (Plantaginaceae) - The effect of digitization of the Muséum national d’Histoire naturelle herbarium in Paris, Adansonia (3) 47 (7), pp. 47-130 : 68

Veronica thessalica Benth.

Prodromus systematis naturalis regni vegetabilis 10:480 ( Bentham 1846).

TYPE CITATION. — Greece, Thessaly / Macedonia: “In Olympo Thessalico (Aucher! n. 1969)”.

LECTOTYPE (designated here). — “ Olympus Thessalus Auch . 1969” (likely collected 1836), G[ G00768401 *].

ISOLECTOTYPES (desginated here). — P[ P04219261 *, P04219262 *].

Nomenclatural note. Veronica thessalica is an alpine plant on limestone screes and rocky slopes of Mt. Olympos in Greece and adjacent mountains in the Republic of Northern Macedonia and Albania at elevations of 2100-2900 m ( Albach et al. 2009). The phylogenetic relationships and morphological differences to related species have been analyzed by Albach et al. (2009). Aucher-Éloy seems to have collected it on Mt. Olympos in 1836 ( Baytop 2005) and considered it to be V. capitata based on his label. Bentham (1846) stated to have seen the collection in Kew (“v. in herb. Hook.”). However, no relevant specimen of V. thessalica of Aucher-Éloy, not least no. 1969, has been found in Kew. Therefore, the specimen in G is chosen as lectotype.