Veronica alternifolia Lej.

Flore des environs de Spa 2: 286 (Lejeune 1813).

TYPE CITATION. — Belgium, Liège: “Se trouve sur les bords des bois entre Verviers et Limbourg”.

NEOTYPE. — Designated by Verloove (2017), “754. Veronica alternifolia Lej. Rchb. Fl. germ. sub n. 2522 Gegend von Spa, Dr. Lejeune”, BR[BR000001066108].

ISONEOTYPES. — DesignatedbyVerloove (2017), HAL[HAL 0136123 *, HAL 0136124 *], HBG[HBG512099 *], MPU[MPU207333 *].

ISONEOTYPES (designated here). — BP[BP349892!], HAL[HAL077433!], K[K000806808!*, K000806809!*], LMO[LMO754!], P[P03517298 *], TUB!, W[W1889-208304!].

Nomenclatural note. Veronica alternifolia is difficult to assign to a species since it is mostly filed as V. spicata but sometimes filed as V. longifolia (Reichenbach herbarium). Even plants found in various herbaria are heterogeneous, sometimes assignable to one, sometimes to the other, mostly, however, they seem to be hybrids. Verloove (2017) discussed the name and assigned it to V. longifolia, and I follow that decision until more information becomes available.