Potentilla cinerea Vill.,

Gregor, Thomas, Tison, Jean-Marc & Garraud, Luc, 2013, Neotypification of Potentilla cinerea Vill. (Rosaceae), Candollea 68 (1), pp. 155-158 : 156

Potentilla cinerea Vill.,

Prosp. Hist. Pl. Dauphiné: 46. 1779.

Ξ Potentilla opaca Vill. , Hist. Pl. Dauphiné 3: 566. 1788 [nom. illeg.]

Ξ Potentilla verna subsp. cinerea (Vill.) Schübl. & G. Martens, Fl. Würtemberg: 341. 1834.

Ξ Potentilla acaulis subsp. cinerea (Vill.) Soják in Preslia 65: 129. 1993.

Neotypus (here designated): ” Potentilla opaca ”, Reliquae Chaixianae, s.d., s.coll. ( GAP [ GAP002134 ], arrow) ( Fig. 1 ).

Mat-forming perennial subshrub with rooting, mostly subterraneous creeping woody stems; ascending flowering stems up to 15 cm tall; leaves on both sides with a more or less continuous tomentum of stellate hairs, its density increases with light exposure. Stellate hairs with 10-20 short rays and sometimes a long central hair up to 0.5 mm long. Leaves rarely ternate, mostly 5-digitate; petioles with few-branched stellate hairs and simple hairs of about 0.3 mm length as well as patent hairs of 2-3 mm length, the latter being absent in related species, all hairs translucent; central leaflet 15-23 × 7-9 mm, oblong-obovate with a cuneate base, apically dentate from about the middle, teeth mostly blunt, grey-green above, grey beneath; stipules of basal leaves linear, about 1 cm long. Flowers 1-6, in cymes. Sepals ovate or ovate-lanceolate; epicalyx-segments lanceolate or elliptical, usually shorter than sepals. Petals 4-7 mm, light yellow to golden yellow, longer than sepals. Achenes rugose; style conical at base, slightly clavate at apex. Chromosome number 2 n = 28.

Figures

Fig. 1. – Neotype of Potentilla cinerea Vill. (designated by an arrow). [s.coll., GAP] [© Conservatoire Botanique National Alpin, Gap, France. Reproduced with permission]