Thallus membranous, orbicular, 2-3-(6) cm high, to 10 cm broad, sessile, commonly aggregate, often overlapping each other, with smooth or slightly undulate margins, purple-red to dark brownish-red, often with lighter marginal stripe, cordate or sometimes cuneate at base with small discoid attachment, Blade monostromatic, thin, (40)-50-70 µm. Margins inrolled, edges dentate. In transverse section, cells 28-30 µm high and 15-25 µm broad, with single, stellate chloroplast. Monoecious, spermatangial and carposporangial patches develop along margins. Growing during autumn-winter season on the uppermost (splash zone) to middle intertidal rocks, exposed to strong wave action.
North America: Connecticut (CT) (Klein et al. 2003, Neefus, Mathieson, Bray & Yarish 2008), Massachusetts (MA) (Neefus, Mathieson, Bray & Yarish 2008), North Carolina (NC) (Klein et al. 2003, Teasdale et al. 2009).
South-west Asia: Goa (Pereira & Almeida 2014), Sri Lanka (Silva, Basson & Moe 1996, Coppejans et al. 2009).
Asia: China (Tseng 1984, Broom et al. 2002, Monotilla & Notoya 2004, Liu 2008, Tseng 2009), Japan (Okamura 1936, Segawa 1981, Yoshida, Nakajima & Nakata 1990, Yoshida 1998, Broom et al. 2002, Monotilla & Notoya 2004), Korea (Lee & Kang 1986, Lee & Kang 2001, Monotilla & Notoya 2004, Lee 2008, Kim & Kim 2011), South China Sea (Phang et al. 2016), Taiwan (Lewis & Norris 1987, Huang 2000, Shao 2003-2014, Anon. 2012).
South-east Asia: Philippines (Silva, Meñez & Moe 1987 , Monotilla & Notoya 2004 ), Vietnam (Tsutsui et al. 2005, Titlyanov & Titlyanov 2012, Nguyen et al. 2013).
Accesses: This record has been accessed by users 4208 times since it was created.
Iwasaki, H. & Sasaki, N. (1972). The Conchocelis-phase of Porphyra suborbiculata forma latifolia. Proceedings of the International Seaweed Symposium 7: 364-367.