Lyrella clavata (Gregory) D.G. Mann

Al-Handal, Adil Y., Thomas, Evan W. & Pennesi, Chiara, 2018, Marine benthic diatoms in the newly discovered coral reefs, off Basra coast, Southern Iraq, Phytotaxa 372 (2), pp. 111-152 : 117

Lyrella clavata (Gregory) D.G. Mann in Round et al. (1990: 672) ( Fig. 14 )

References: Hendey 1970, p. 135, pl. 2, fig. 17 (as Navicula clavata Gregory (1856: 46) ; Witkowski et al. 2000, p. 231, pl. 97, fig. 6.

Features: Length 40–72 μm, width: 26–34 μm, striae 11–15 in 10 μm.

Description: Valves broadly elliptical with sub-rostrate apices and straight raphe fissures. Hyaline lateral areas are broadly lanceolate.

Ecology and Distribution: Widely distributed marine littoral species. Previously reported from the Gulf ( Hendey 1970, Al-Handal 2009). Frequent in Basra corals,

Figures

FIGURES 11–20. Marine benthic diatoms in the coral reefs off Basra. Fig. 11. Actinocyclus curvatulus, Fig. 12. Actinocyclus octonarius, Fig. 13. Lyrella abrupta, Fig. 14. Lyrella clavata, Fig. 15. Lyrella hennedyi, Fig. 16. Lyrella hennedyi var. subcarinata, Fig. 17, Lyrella spectabilis, Fig. 18. Petroneis granulata, Fig. 19. Petroneis marina, Fig. 20. Petroneis sp.