RT Journal Article
T1 Three new cryptogenic species in the tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta)
A1 Bárbara, I.
A1 Cremades, Javier
A1 Verbruggen, H.
A1 Maggs, C. A.
A1 Díaz Tapia, Pilar
K1 Cox1
K1 Introduction vectors
K1 Melanothamnus
K1 Melanothamnus pseudoforcipatus sp. nov.
K1 Non-native
K1 Polysiphonia
K1 Polysiphonia delicata sp. nov.
K1 Polysiphonia radiata sp. nov.
K1 RbcL
K1 New species
AB During our sampling surveys of the tribes Polysiphonieae and Streblocladieae in Spain and Australia, three previously unrecorded species were collected. Based on molecular and morphological evidence they are proposed as new species. Polysiphonia delicata sp. nov. and Polysiphonia radiata sp. nov. belong to the Polysiphonieae and share the synapomorphy in this group, rhizoids in open connection to pericentral cells. They differ from other members of this group either by rbcL sequence divergences greater than 4.5% and/or by morphological characters. The third species is placed in Melanothamnus (tribe Streblocladieae), as Melanothamnus pseudoforcipatus sp. nov. In agreement with the morphological delineation of the genus, it has plastids lying only on the radial walls of pericentral cells. It can be separated from most other members of the genus by having naked segments between trichoblasts or branches and/or rbcL sequence divergences higher than 4%. In Galicia, Spain, both Polysiphonia species were mainly collected in marinas, while M. pseudoforcipatus was found at a site close to oyster aquaculture facilities. Polysiphonia delicata was also found in Victoria, Australia, and the potentially non-native status of these three species in relation to their known distribution is discussed.
PB Taylor & Francis
SN 2330-2968
YR 2019
FD 2019-03-18
LK https://hdl.handle.net/10347/39191
UL https://hdl.handle.net/10347/39191
LA eng
NO Díaz-Tapia, P., Bárbara, I., Cremades, J., Verbruggen, H., & Maggs, C. A. (2017). Three new cryptogenic species in the tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta). Phycologia, 56(6), 605-623.
NO Xunta de Galicia
NO Ministerio de Agricultura, Alimentación y Medio Ambiente
NO Organismo Autónomo Parques Nacionales
NO Australian Biological Resources Study
NO Australian Research Council
NO Holsworth Foundation
NO Deputación da Coruña
DS Minerva
RD 24 abr 2026