Papenfussiella Kylin, 1940

Holotype species: Papenfussiella gracilis Kylin

Original publication and holotype designation: Kylin, H. (1940). Die Phaeophyceenordnung Chordariales. Acta Universitatis Lundensis 36(9): 1-67, 30 figs.

Request PDF

Description: Plants solitary or caespitose, arising from small discoid base, branched, solid, cord-shaped, slimy, tomentose, mediate to dark brown, up to 50 cm in length, haplostichous, composed of multiaxial medullary filaments and cortical layer of long and short assimilatory filaments. Subcortical layer absent and boundary between medulla and cortex distinct. Phaeophycean hairs absent. Each cells contain several disc-shaped to elongate chloroplasts with pyrenoids. Unilocular sporangia formed on the basal part of assimilatory filament, ovate or ellipsoid. Plurilocular sporangia not detected on erect thallus. Unispores as well as plurispores pear-shaped, normally biflagellated, containing a chloroplast with a stigma. Peters (1984) cultured P. calitricha from Newfoundland and showed typical heteromorphic life history alternating between dioecious filamentous gametophytes and macroscopic sporophyte formed on plethysmothallus. Unfused gametes developed into gametophytes of their original sexes again. Chromosome counts yielded n=19 Å 3 in gametophytes and 32 Å 6 in sporophyte.

Information contributed by: H. Kawai. The most recent alteration to this page was made on 2014-06-20 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156, 1 fig., 1 table.

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=33397

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 June 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024