Staurosirella mutabilis (W.Smith) E.Morales & Van de Vijver

Vijver, Bart Van de, 2022, Lectotypification of four former Odontidium species described by William Smith (Bacillariophyta, Fragilariales), Notulae Algarum 226, pp. 1-3 : 2

Staurosirella mutabilis (W.Smith) E.Morales & Van de Vijver (in Morales & al. 2015: 468) ( Figs 15–22 )

Basionym: Odontidium mutabile W.Smith A synopsis of the British Diatomaceae , 17, pl. XXXIV[34]: fig. 290, 1856.

Lectotype (here designated): slide BR-4687 ( BR, Meise Botanic Garden); Plumpton, Sussex, coll. date III.1852. The lectotype is represented by Fig. 18 .

Registration: www.phycobank.org/103033

Figures

Figures 1–29. Four (former) Odontidium species described in Smith (1856). Original drawings and LM pictures taken from the lectotype material. Fig. 1. Original drawing of Odontidium harrisonii W.Smith 1856: pl. LX: fig. 373 [=Staurosirella harrisonii (W.Smith) E.Morales & C.E.Wetzel in Morales & al. 2015]. Figs 2–6. Five valves in decreasing length series of Staurosirella harrisonii. Fig. 7. Original drawing of Odontidium tabellaria W.Smith 1856: pl. XXXIV: fig. 291 [≡ Staurosira tabellaria (W.Smith) Leuduger-Fortmorel 1878]. Figs 8–14. Seven valves in decreasing length series of Staurosira tabellaria. Fig. 15. Original drawing of Odontidium mutabile W.Smith 1856: pl. XXXIV: fig. 290 [=Staurosirella mutabilis (W.Smith) E.Morales & Van de Vijver in Morales & al. 2015]. Figs 16–22. Colony and six valves in decreasing length series of Staurosirella mutabilis. Fig. 23. Original drawing of Odontidium parasiticum W.Smith 1856: pl. LX: fig. 375 [=Pseudostaurosira parasitica (W.Smith) E.Morales 2003]. Figs 24–29. Six valves in decreasing length series of Pseudostaurosira parasitica. Scale bars represent 10 µm. Original drawings not represented on the same scale.