UC specimens and range limits for Pyropia nereocystis

• Blue markers: specimen records
• Yellow marker: type locality, if present
• Red markers: endpoints of range from literature

View map from the Consortium of Pacific Northwest Herbaria

Search Sequences in GenBank

Porphyra C. Agardh 1824

With thalli of differing morphologies during life history, the larger stages leafy and erect, the smaller stages microscopic and filamentous. "Gametangial" thalli with monostromatic or distromatic blades, arising singly from discoid attachment. Blades sessile or with brief stipe, normally entire, sometimes with much-ruffled margins. Cells embedded in colorless, firm, but gelatinous matrix. Chloroplasts 1 or 2, stellate, each with central pyrenoid. Plants monoecious or dioecious. "Spermatangia" in packets of 16-128, mostly in marginal areas. "Carpospores" in packets of 4-64, usually in larger marginal areas. Filamentous "Conchocelis" stage (see below, p. 304) probably perennial, commonly growing in matrix of mollusk shells.

Porphyra nereocystis Anders.

Anderson 1892: 149; Hus 1902: 210; Smith 1944: 171.

Thalli deep pink to dull purplish-red, in groups, 25-90(300) cm long; blades monostromatic, 25-60 µm thick in vegetative parts, subsessile, with discoid attachment, at first plane and broadly linear to broadly ovate, later with inrolled margins basally and ill-defined in shape owing to marginal laciniation; blades monoecious; "spermatangia" in packets of 128, forming sharply defined spots and streaks within marginal "carposporangial" areas; "carpospores" in packets of 32.

On stipes of Nereocystis, usually 3-6 m below pneumatocyst; occasional on other Laminariales; frequent to abundant, November to June, Alaska to S. Calif., usually found cast ashore. Type locality: probably Santa Cruz, Calif.

Excerpt from Abbott, I. A., & Hollenberg, G. J. (1976). Marine algae of California. Stanford University Press, Stanford, California. xii [xiii] + 827 pp., 701 figs.