Senecio expansus Wedd., Chlor. Andina 1: 107. 1856.

Calvo, Joel, Granda, Arturo & Funk, Vicki A., 2019, New combinations and synonyms in discoid caespitose Andean Senecio (Senecioneae, Compositae), PhytoKeys 132, pp. 111-130 : 126

publication ID

https://dx.doi.org/10.3897/phytokeys.132.38534

persistent identifier

https://treatment.plazi.org/id/0AE8231A-ED59-5FC3-826B-7FCEA7392F17

treatment provided by

PhytoKeys by Pensoft

scientific name

Senecio expansus Wedd., Chlor. Andina 1: 107. 1856.
status

 

2. Senecio expansus Wedd., Chlor. Andina 1: 107. 1856.

Senecio macrorrhizus Wedd., Chlor. Andina 1: 108. 1856. Type: Peru. Cusco: dept. de Cuzco, Oct 1839-Feb 1840, C. Gay 1870 (lectotype, designated here: P [P01816797]), syn. nov.

Type.

Bolivia. Potosí: montagnes des lagunas de Potosí, [without date], A. d’Orbigny 1418 (lectotype, designated by Cabrera (1966) as “typus”, pg. 21: P [P01816805]; isolectotypes: BR [BR00000552801], G [G00356020], K [K000497783]).

Discussion.

Senecio macrorrhizus Wedd. was described from Cusco (Peru) and distinguished from S. expansus Wedd. mainly by having a thicker, longer, and more sinuous rhizome, larger capitulum, and rosettes less spread out ( Weddell 1856). The mentioned differences fall within the variability encompassed by S. expansus , and here we synonymize them.

Gay’s specimen P01816797 perfectly matches the protologue information, and therefore, it is designated as the lectotype of the name S. macrorrhizus .

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Asteraceae

Genus

Senecio