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Iconographia Diatomologica, Volume 25: The Genus Didymosphenia M. Schmidt: A Critical Evaluation of Established and Description of 11 New Taxa

Flora / FaunaIdentification KeyMonograph

Series: Iconographia Diatomologica Volume: 25

By: Ditmar Metzeltin(Author), Horst Lange-Bertalot(Author)

298 pages, 126 plates with 508 b/w photos

Gantner Verlag

Hardback | Jan 2014 | #216905 | ISBN-13: 9783874294584
Availability: Usually dispatched within 6 days Details
NHBS Price: £170.00 $217/€189 approx

About this book

For the first time specimens of the type material of Echinella geminata Lyngbye 1819 are documented with light- and scanning- electron-microscopical photographs. This is the reference point for various other presented morphodemes of Didymosphenia geminata originating from five continents and subcontinents or floristic regions respectively. Twenty-two species can be differentiated morphologically among which 11 plus one subspecies are proposed and described here as new to science.

Formerly established taxa, for a part in a lower taxonomical rank than recently, are: Didymosphenia clavaherculis (Ehrenberg) Metzeltin & Lange-Bertalot 1995, D. curvata (Skvortzow & Meyer) Metzeltin & Lange-Bertalot 1995, D. curvirostrum (Tempère & Brun) M. Schmidt 1899, D. dentata (Dorogostaisky) Skvortzow & Meyer 1937, D. fossilis Horikawa & Okuno 1944, D. geminata (Lyngbye) M. Schmidt 1899 ssp. geminata, D. lineata Skabichevsky 1983, D. pumila Metzeltin & Lange-Bertalot 1995, D. siberica M. Schmidt 1899, D. subcapitata (Skvortzow & Meyer) stat. nov., D. tatrensis Mroziska, Czerwik-Marcinkowska & Gradziski 2006.

Proposed as taxa new to science are: Didymosphenia clavamagna, D. coronata, D. crassiporata, D. geminata ssp. crassa, D. grunowii, D. laticeps, D. laticollis, D. mongolica, D. nipponica, D. skvortzowii, and D. strelnikovae.

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