Journalartikel

Jahr der Veröffentlichung: 1999

Seiten: 114-127

Zeitschrift: Phycologia

Bandnummer: 38

Heftnummer: 2

ISSN: 0031-8884

DOI Link: https://doi.org/10.2216/i0031-8884-38-2-114.1

Verlag: Taylor and Francis Group

Abstract: 
Two combinations of features exist in species of the Pseudobryopsis/Trichosolen complex (Bryopsidales, Chlorophyta): (1) gametangia are separated from the supporting branch by a plug and are emptied after liberation of gametes; chloroplasts are small and have no pyrenoids; and (2) gametangia have a protoplasmic connection to the supporting branch during their entire development and are refilled with protoplasm after liberation of gametes; chloroplasts are large and have evident pyrenoids. Culture studies in Pseudobryopsis oahuensis Egerod and Trichosolen duchassaingii (J. Agardh) Taylor showed that these species differ considerably in chloroplast features and gametangial behavior. Examination of herbarium material of P. blomquistii Diaz-Piferrer, T. duchassaingii (J. Agardh) Taylor, P. gmcilis Womersley ct Bailey, P, longipedicellata Blomquist et Diaz-Piferrer, P. mauritiana Borgesen, T. molassensis Bucher et Norris, P. myura (J. Agardh) Berthold, P. oahuensis Egerod, P. parva Dawson, P. planktonica Cassie, P. solomonensis Womersley et Bailey, and T. venezolana Taylor showed that critical details of thallus anatomy can also be discerned from herbarium specimens. At least two species groups within the Pseudobryopsis/Trichosolen complex can be distinguished based on the observed differences in gametangia and chloroplasts. We consider these differences to be of generic value and propose that both Pseudobryopsis Berthold and Trichosolen Montagne, formerly used as synonyms, be recognized as distinct genera. The diagnoses of Pseudobryopsis and Trichosolen are emended, all described species of the Pseudobryopsis/Trichosolen complex (except P, planktonica) are assigned to either Pseudobryopsis or Trichosolen, and one new combination, Pseudobryopsis venezolana (Taylor) Henne et Schnetter comb, nov., is proposed.

Harvard-Zitierstil: Henne, K. and Schnetter, R. (1999) Revision of the Pseudobryopsis/Trichosolen complex (Bryopsidales, Chlorophyta) based on features of gametangial behavior and chloroplasts, Phycologia, 38(2), pp. 114-127. https://doi.org/10.2216/i0031-8884-38-2-114.1

APA-Zitierstil: Henne, K., & Schnetter, R. (1999). Revision of the Pseudobryopsis/Trichosolen complex (Bryopsidales, Chlorophyta) based on features of gametangial behavior and chloroplasts. Phycologia. 38(2), 114-127. https://doi.org/10.2216/i0031-8884-38-2-114.1