UC specimens and range limits for Constantinea simplex

• 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

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Constantinea Postels & Ruprecht 1840

Thalli stipitate, the cylindrical stipes branched or unbranched, with peltate or perfoliate blades; plants perennial; lower portion of stipe with scars of old blades. Blades at first entire and membranous, coriaceous when mature, becoming split and eroded with age, deep red. Tetrasporangia in nemathecia with paraphyses, irregularly zonately divided; nemathecia forming smooth, confluent, sometimes completely continuous zone up to half diam. of blade. Spermatangia unknown. Carpogonial and auxiliary-cell branches of 9-12 cells. Nutritive cells among largest in Cryptonemiales, arranged in several planes. Gonimoblasts produced by nutritive cell in carpogonial branch and by auxiliary cell in nearby auxiliary-cell branch. Gonimoblasts forming fertile band on blade, this not as wide as tetrasporangial nemathecial band.

Constantinea simplex Setch.

Setchell 1901: 127; 1906: 171; Smith 1944: 207; Abbott 1968: 192.

Thalli 2-8 cm tall, the stipes usually unbranched, 0.6-1.2 cm diam.; blades 6-12 cm wide; other characters as for genus.

Locally abundant, saxicolous, usually in groups, low intertidal to subtidal (15 m), N. Br. Columbia to Pt. Conception, Calif. Type locality: Dillon Beach (Marin Co.), 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.