Phagnalon tarraconense Sennen (1929: 43)

Montes-Moreno, Noemí, Garcia-Jacas, Núria, Nualart, Neus, Susanna, Alfonso & Sáez, Llorenç, 2018, Typification of plant names referable to Phagnalon (Compositae) with some taxonomic notes, Phytotaxa 360 (1), pp. 1-18 : 14

Phagnalon tarraconense Sennen (1929: 43) , pro. hybr.

Type:—[ SPAIN.] Catalogne: Tarragona, coteaux calcaires, 3 April 1917, Sennen 3097 (lectotype: BC-SENNEN barcode BC945730 !, designated here; isolectotypes: BC barcode BC31383 !, BM barcodes BM001025798 and BM001025799 [digital image!], Herb. F. Sennen II number 12598!, P barcode P04401236 [digital image!], W number W1922-0015200 !) .

(Image available at: http://www.ibb.csic.es/herbari/ JPEG / BC 945730.jpg).

= Phagnalon rupestre (L.) Candolle (1836: 396) subsp. rupestre

Notes:— Sennen (1929) described Ph. tarraconense from eastern Spain: “Hab.- Tarragone: coteaux calcaires et vieux murs dans la garrigue” and suggested its hybrid origin between Ph. tomentosum and Ph. saxatile , citing only one specimen in the original description, “Num. 3097”. However, we found no information about morphological characters intermediate between the parental species in the original description. Moreover, on the labels of the original gathering, it was stated that it could possibly be a hybrid between other different taxa: Ph. tomentosum and Ph. sordidum . We chose the specimen BC-SENNEN 945730 as the lectotype because it is in a good state of preservation and agrees morphologically with the original description. We found no evidence of intermediate morphology between the Iberian species Ph. rupestre , Ph. saxatile and Ph. sordidum in the original material. We conclude that the morphology of leaves, involucral bracts and peduncles fall within the morphological variation found in Ph. rupestre subsp. rupestre .