Salix ×marchettii (Salicaceae), a new nothospecies from the Apuan Alps (Northern Tuscany, Central Italy)

Abstract

Abstract Merli, M. & F. Martini (2017). Salix ×marchettii (Salicaceae), a new nothospecies from the Apuan Alps (Northern Tuscany, Central Italy). Candollea 72: 341–345. In English, English abstract. A new nothospecies, Salix ×marchettii M. Merli & F. Mart. (Salix crataegifolia Bertol. × Salix eleagnos Scop. subsp. eleagnos) (Salicaceae), is described from the Apuan Alps. This new nothotaxon grows on screes between 1010 and 1105 m. The main morphological characters which distinguish Salix ×marchettii are the indumentum with mixed, silky and tomentose trichomes on the young twigs ; the leaf shape, elliptic-oblong or oblanceolate-oblong to narrowly oblanceolate ; the leaf margin, which may vary from flat to weakly revolute in the same specimen; the male catkins, cylindrical and arcuate-pendant, which have flowers with connate filaments for at least half their length or more. Received: March 28, 2017; Accepted: July 6, 2017; First published online: July 20, 2017