| Ganonema farinosum (J.V. Lamouroux) K.C. Fan & Y.C. Wang | Ganonema farinosum  (p. SPL 2.1 ) | 
				
			| Gayliella flaccida (Harvey ex Kützing) T.O.Cho & L.J.McIvor, 2008 | Ceramium flaccidum  (p. SPL 2.2, 65 ) | 
				
			| Gelidiella acerosa (Forsskål) Feldmann & G. Hamel | Gelidiella acerosa  (p. SPL 2.1 ) | 
				
			| Gelidiella trinitatensis W.R. Taylor | Gelidiella trinitatensis  (p. SPL 2.1 ) | 
				
			| Gelidiopsis planicaulis (W.R. Taylor) W.R. Taylor | Gelidiopsis planicaulis  (p. SPL 2.1 ) | 
				
			| Gelidiopsis scoparia (Montagne & Millardet) De Toni | Gelidiopsis scoparia  (p. SPL 2.1 ) | 
				
			| Gracilaria cervicornis (Turner) J. Agardh | Gracilaria cervicornis  (p. SPL 2.1 ) | 
				
			| Halimeda discoidea Decaisne | Halimeda discoidea  (p. SPL 2.1 ) | 
				
			| Halimeda opuntia (Linnaeus) J.V. Lamouroux | Halimeda opuntia  (p. SPL 2.1 ) | 
				
			| Halimeda tuna (J. Ellis & Solander) J.V. Lamouroux | Halimeda tuna  (p. SPL 2.1 ) | 
				
			| Herposiphonia pecten-veneris (Harvey) Falkenberg | Herposiphonia pecten-veneris  (p. SPL 2.1 ) | 
				
			| Herposiphonia secunda (C. Agardh) Ambronn | Herposiphonia secunda  (p. SPL 2.1 ) | 
				
			| Heterosiphonia crispella (C. Agardh) M.J. Wynne | Heterosiphonia crispella  (p. SPL 2.1 ) | 
				
			| Heterosiphonia crispella (C. Agardh) M.J. Wynne | Heterosiphonia crispella var. laxa  (p. SPL 2.2, 65 ) | 
				
			| Hydrolithon boergesenii (Foslie) Foslie | Hydrolithon boergesenii  (p. SPL 2.1 ) | 
				
			| Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain | Hydrolithon farinosum  (p. SBL 2.1 ) | 
				
			| Hydropuntia crassissima (P.L. Crouan & H.M. Crouan) M.J. Wynne | Hydropuntia crassissima  (p. SPL 2.1 ) | 
				
			| Hypnea spinella (C. Agardh) Kützing | Hypnea spinella  (p. SPL 2.2, 62 ) | 
				
			| Jania adhaerens J.V. Lamouroux | Jania adhaerens  (p. SPL 2.1 ) | 
				
			| Jania capillacea Harvey, 1853 | Jania capillacea  (p. SPL 2.1 ) | 
				
			| Laurencia filiformis (C. Agardh) Montagne | Laurencia filiformis  (p. SPL 2.1 ) | 
				
			| Laurencia intricata J.V. Lamouroux | Laurencia intricata  (p. SPL 2.1 ) | 
				
			| Laurencia microcladia Kützing | Laurencia microcladia  (p. SPL 2.1 ) | 
				
			| Laurencia obtusa (Hudson) J.V. Lamouroux, 1813 | Laurencia obtusa  (p. SPL 2.1 ) | 
				
			| Liagora ceranoides J.V. Lamouroux | Liagora ceranoides  (p. SPL 2.1 ) | 
				
			| Lobophora variegata (Lamouroux) Womersley ex Oliveira | Lobophora variegata  (p. SPL 2.1 ) | 
				
			| Lomentaria baileyana (Harvey) Farlow | Lomentaria baileyana  (p. SPL 2.2, 64 ) | 
				
			| Lyngbya aestuarii Liebman ex Gomont | Lyngbya aestuarii  (p. SPL 2.2 ) | 
				
			| Lyngbya confervoides C. Agardh, 1824 | Lyngbya confervoides  (p. SPL 2.2 ) | 
				
			| Lyngbya majuscula (Dillwyn) Harvey ex Gomont, 1892 | Lyngbya majuscula  (p. SPL 2.1, 19 ) |