Ptilopogon Reinke, 1890

Holotype species: Ptilopogon botryocladus (Hooker f. & Harvey) Reinke

Original publication and holotype designation: Reinke, J. (1890). Übersicht der bisher bekannten Sphacelariaceen. Berichte der Deutsche Botanischen Gesellschaft 8: 201-215, 2 figs.

Description: Plants forming 5-20 cm tall, olive-brown to dark golden brown, erect tufts with one to several heterotrichous axes. Basal parts consisting of small or extensive, polystromatic, crustose discs, often covered by matted descending cortical rhizoids arising from the lower parts of the axes. Axes and indeterminate laterals prominent, erect, terete, auxocaulous, black, smooth and wiry. Branching of several orders: determinate laterals in short, straight, sparsely and irregularly pinnately branched tufts, clothed more or less evenly and densely on all sides of the lax indeterminate laterals. Forming one lenticular branch initial from each conspicuous cylindrical apical cell before a segment is cut off. Segments each dividing transversely once preceeding frequent longitudinal and transverse segmentation and secondary growth. Internal structure of axes composed of rather large, quadrangular, medullary cells, smaller inner cortical cells and radiating files of outer cortex, often in several layers and separated by dark, thickened cell walls. Woolly descending rhizoids arising only in the lower parts of the axes . Hairs unknown. Pericysts absent. Reproductive structures: solitary plurilocular gametangia and unilocular zoidangia in globular small tufts composed of branched incurled filaments. Marine in tidal pools and in sublittoral. Temperate southern hemisphere (New Zealand, S.E. Australia). The diplohaplontic life history is probably isomorphic, anisogamic and monoecious.

Information contributed by: Prud'homme van Reine. The most recent alteration to this page was made on 2017-08-15 by M.D. Guiry.

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

Gender: This genus name is currently treated as masculine.

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.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42578

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 15 August 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024