Ralfsiella minima, Sims, Pat A., Williams, David M. & Ashworth, Matt, 2018

Sims, Pat A., Williams, David M. & Ashworth, Matt, 2018, Examination of type specimens for the genera Odontella and Zygoceros (Bacillariophyceae) with evidence for the new family Odontellaceae and a description of three new genera, Phytotaxa 382 (1), pp. 1-56 : 44

publication ID

https://doi.org/ 10.11646/phytotaxa.382.1.1

persistent identifier

https://treatment.plazi.org/id/12590703-F437-FFBC-22DC-FF66FEE32663

treatment provided by

Felipe (2024-09-07 00:36:07, last updated 2024-09-07 03:54:23)

scientific name

Ralfsiella minima
status

comb. nov.

Ralfsiella minima (Grunow in Van Heurck) P.A. Sims & D. M. Williams, comb. nov.

Basionym: — Biddulphia aurita var. minima Grunow in Van Heurck (1882: pl. 98, figs 11–13)

Synonym: — Odontella aurita ( auritum ) var. minima (Grunow in Van Heurck) De Toni (1894: 863)

Type:—Belgium: Figs 11, 12 View FIGURES 8–13 , “ Blankenberghe”; FRANCE: Fig. 13 View FIGURES 8–13 [text as Fig. 12 View FIGURES 8–13 ], “de l’ile de Bréhat” (Grunow in Van Heurck 1882: pl. 98, figs 11–13)

Van Heurck, H. (1882) Synopsis des Diatomees de Belgique. Atlas. Ducaju & Cie., Anvers, pls. 78 - 103.

Gallery Image

FIGURES 8–13. Trieres regia (M.Schultze) Ashworth & E.C. Theriot (Bonny River, Nigeria). Fig. 8. Reproduction of illustrations for Denticella regia from Schultze (1859: figs 11 and 12) (not to scale). Fig. 9. Valve exterior tilted, apices with narrow outwardly directed elevations, broad mantle narrowing to acute apices and marginal ridge extending between elevations; scale bar = 43 μm. Fig. 10. Valve face fractured showing loculate areolae and scattered spinules on face and mantle; scale bar = 2 μm. Fig. 11. Valve flat with lanceolate valve face, semi-lanceolate mantle and narrow annulus (sternum) extending just beyond hollow spines, which are the openings from rimoportulae; scale bar = 38 μm. Fig 12. Elevation with small flat summit and ocellus on distal face; scale bar = 2.5 μm. Fig. 13. Detail of narrow annulus (arrow) (sternum) bordered by transapical rows of poroids; scale bar = 7.5 μm.

Kingdom

Chromista

Phylum

Ochrophyta

Class

Bacillariophyceae

Order

Triceratiales

Family

Triceratiaceae

Genus

Ralfsiella