Thursday, March 25, 2021

[Botany • 2021] Rubus noricus (Rosaceae) Hidden on Both Sides of the Alps: A New Species of Bramble from Austria and Germany


 Rubus noricus Hohla, Pagitz & Király

in Hohla, Pagitz & Király, 2021.

Rubus ser. Rhamnifolii includes apomictic polyploid species, which occur in north-western and central Europe, with rare outposts to eastern central Europe. A regionally distributed tetraploid species of the series occurring north and south of the Eastern Alps in Austria and Germany, Rubus noricus is described here. The new species is morphologically compared with similar taxa of the series, moreover, comprehensive iconography, data on distribution and ecology are presented.

Keywords: apomixis, biogeography, ecology, postglacial spread, Rubus ser. Rhamnifolii, taxonomy, Eudicots

  Rubus noricus Hohla, Pagitz & Király.
A: section of leafed first-year stem; B: detail of first-year stem; C: margin of terminal leaflet; D: infructescence; E: inflorescence axis; F: peduncle; G: flower; H: petal; I: young carpel. Del. J. Táborská.

 Rubus noricus Hohla, Pagitz & Király.
 A: typical leaf of first-year stem (underside); B: typical leaf of first-year stem (upperside); C: close-up of lower surface of a leaf on first-year stem; D: first-year stem; E: infructescence; F: terminal part of infructescence; G: flowers; H: young collective fruits (with hairy carpels). Austria, Upper Austria, Lochen, Tannberg, July and August 2019, phot. M. Hohla.

Rubus noricus Hohla, Pagitz & Király, sp. nov. 

Etymology:— The epithet “noricus” derives from the former Roman province “Noricum” that approximately covered the eastern Alps and its foregrounds, which overlap well with the species’ distribution area.

Ecology:— Rubus noricus was found in the colline and submontane altitudinal belts from 320 to 600 m above sea level. The species generally grows on slightly acidic (e.g. silicate-rich gravel or granite) to base-rich (e.g. limestone) substrates, on semi-dry to mesic soils, both in natural forest communities (most often in associations of the Fagetalia order), and their derivates (e.g. planted coniferous stands, partly mixed with native deciduous tree species). It prefers half-shady fringes or somewhat opened forest stands, in turn, it avoids exposed sunny sites.


  Michael Hohla, Konrad Pagitz and Gergely Király. 2021. Hidden on Both Sides of the Alps: Rubus noricus, A New Species of Bramble (Rosaceae) from Austria and Germany. Phytotaxa. 489(1); 1–9. DOI: 10.11646/phytotaxa.489.1.1