Verbascum hookerianum Ball, in J. Linn. Soc. Bot. 16: 584. 1878.

Khamar, Hamid, Oualidi, Jalal El, Touhami, Amina Ouazzani & Civeyrel, Laure, 2023, Nomenclature and typification in Verbascum (Scrophulariaceae) from North Africa, PhytoKeys 225, pp. 115-152 : 115

Verbascum hookerianum Ball, in J. Linn. Soc. Bot. 16: 584. 1878.

Verbascum tagadirtense = Verbascum tagadirtense Murb., in Murbeck, Contr. Fl. Maroc 2(19): 39. 1923. ≡ Verbascum hookerianum var. tagadirtense (Murb.) Murb., in Bull. Soc. Hist. Nat. Afrique N. 18: 83. 1927. Type: [Morocco]. Région du Grand Atlas: Tagadirt N’Bourd, c. 1000 m, 09 May 1921, Sv. Murbeck s.n. (lectotype, designated here: LD [LD1216036]!; isolectotypes LD [LD1215976]!). (2)

Verbascum hookerianum ballii = Verbascum hookerianum var. ballii Murb., in Bull. Soc. Hist. Nat. Afrique N. 18: 83. 1927, nom. nov. superfl.

Type.

[ Morocco]. South Morocco Greater Atlas, May 1871, Hooker s. n. (lectotype, designated here: K [K000410848]!). [image of the lectotype available at http://specimens.kew.org/herbarium/K000410848] (1) .

Notes.

Verbascum hookerianum , was established by Ball (1878) based on a sample collected by Hooker in the district of Ourika at the foothills of the High Atlas Mountains in Morocco. Ball (1878) in his protologue did not use the term type or mention the herbarium that houses the type specimens. However, in his monograph of genus Verbascum , Murbeck (1933) indicated that the original material was kept at Herb. K. During our extensive research, we have traced only one sheet (K000410848) that is totally in agreement with the protologue. This sheet bears a label reading " Verbascum hookerianum Nob., South Morocco Greater Atlas, Coll. Dr. Hooker, May 1871" and includes a part of the inflorescence with basal leaf. Since the Herb. K has a single specimen of the Hooker collection, one may argue that the relevant specimen is the holotype. Nevertheless, Ball did not use the term type or mention the name of the herbarium housing the type. Therefore, we here designate the sheet K000410848 as lectotype of the name.

(2) The protologue of V. tagadirtense comprises a complete description in Latin, followed by the provenance “Région du Grand Atlas-. Pentes broussailleuses à Tagadirt N’Bourd, c. 900 m", but no indication about the name of the herbarium where the type is preserved ( Murbeck 1923). Ten years later, Murbeck (1933), in his monograph of the genus Verbascum , indicated that the original material can be found at Herb. LD. During the course of the pursuit, two sheets were traced at Herb. LD which were in accordance with the protologue. The specimen LD1216036 is here selected as a lectotype of V. tagadirtense .