Cassia holwayana Rose, Contr. U.S. Natl. Herb.

Souto, Flávio Sousa & Agra, Maria De Fátima, 2022, Typifications of ten names related to Senna ser. Interglandulosae (Leguminosae, Caesalpinioideae), Phytotaxa 547 (2), pp. 186-192 : 188

4. Cassia holwayana Rose, Contr. U.S. Natl. Herb. 8: 301. 1905.

≡ Cassia multiflora M. Martens & Galeotti (1843: 307) .

Type:— MEXICO. “... au bord des ruisseaux des régions alpines de la cordillére orientale d’’ Oaxaca, de 6 à 7,000 pieds, surtout près de Capulalpan et de San Pedro Nolasco”, H. Galleotti nº 3145 (lectotype designated here: BR barcode 000000521559 [image!], photo negative NY-9578 [image!]; isolectotypes: G barcode G00370886 [image!], K barcode K000478178 [image!], photo negative NY-1417 [image!], P barcode P02436115 [image!]). Lectotype available at: https://www.botanicalcollections.be/specimen/ BR0000005215591

Accepted name. Senna holwayana (Rose) H.S. Irwin & Barneby var. holwayana (1982: 560) .

Notes. Cassia holwayana Rose (1905: 301) is a new name for Cassia multiflora M. Martens & Galeotti in Hayez (1843: 307), which was described based on the collection H. Galleotti 3145. It is an illegitimate name, however, as Vogel (1837: 39) previously described a species of Cassia with the same epithet (homonymous). Additionally, the Cassia multiflora protologue does not indicate in which herbarium the holotype was deposited. Irwin & Barneby (1982: 560), when performing the new combination, mistakenly indicated the holotype deposited at the Brussels Herbarium (BR), which Prado et al. (2015) called an inadvertent lectotypification. Therefore, we are designating the specimen deposited at BR, under barcode 000000521559 as the lectotype, as it is the most complete specimen, with leaves and flowers, and is well preserved; additionally, the main collections of Galeotti are deposited in BR ( Thiers 2021).