1. Species Echinoceras ciliatum (J.Ellis) Kützing, 1841 accepted as Ceramium ciliatum (J.Ellis) Ducluzeau, 1806
2. Species Echinoceras diaphanum Kützing, 1841 accepted as Ceramium ciliatum var. diaphanum (Kützing) Schiffner (synonym)
3. Species Echinoceras julaceum Kützing, 1841 accepted as Ceramium julaceum (Kützing) Rabenhorst, 1847 accepted as Ceramium ciliatum (J.Ellis) Ducluzeau, 1806 (synonym)
4. Species Echinoceras nudiusculum Kützing, 1841 accepted as Ceramium ciliatum (J.Ellis) Ducluzeau, 1806
5. Species Echinoceras spinulosum Kützing, 1842 accepted as Ceramium spinulosum (Kützing) Rabenhorst, 1847 accepted as Ceramium ciliatum var. robustum (J.Agardh) Mazoyer, 1938 (synonym)
6. Species Echinoceras hirsutum Kützing, 1842 (uncertain, uncertain taxonomic status subjected to verification)
7. Species Echinoceras hystrix Kützing, 1842 (uncertain, uncertain taxonomic status subjected to verification)
8. Species Echinoceras imbricatum Kützing, 1842 (uncertain, uncertain taxonomic status subjected to verification)
9. Species Echinoceras pellucidum Kützing, 1841 (uncertain, uncertain taxonomic status subjected to verification)
10. Species Echinoceras puberulum Kützing, 1842 (uncertain, uncertain taxonomic status subjected to verification)

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