Corallophila eatoniana
(Farlow) T.O. Cho, H.-G. Choi, G. Hansen, & S.M. BooImage Gallery (click for more)
Database links
- Blue markers: specimen records
- Yellow marker: type locality, if present
- Red markers: endpoints of range from literature
Illustration from DeCew's Guide to the Seaweeds of British Columbia, Washington, Oregon, and Northern California
Illustration from DeCew's Guide to the Seaweeds of British Columbia, Washington, Oregon, and Northern California
Centroceras Kützing 1841
Thalli small, purplish, erect or prostrate, with cylindrical, wholly corticated branches. Branching dichotomous, or irregular; apices forcipate. Cortical cells rectangular and arranged in longitudinal rows, cut off from upper end of large, cylindrical axial cells comparable to internodal cells of Ceramium; corticating cells dividing transversely and covering entire axial cell, forming 1 to many spines at upper portion of each node. Cells uninucleate. Tetrasporangia tetrahedrally divided, in rings at nodes, sometimes on specialized branches. Spermatangia in terminal clusters from tufted, adventitious branchlets, these arising from pericentral cells at nodes. Development of gonimoblast as in Ceramium; mature gonimoblast surrounded by several sterile branches.
Ceramium eatonianum (Farl.) DeToni
Centroceras eatonianum Farlow 1875: 373. Ceramium eatonianum (Farl.) DeToni 1903: 1493; Smith 1944: 327; Doty 1947b: 187 (incl. synonymy).
Thalli purplish-brown, 41-10(15) cm tall, in loose tufts; main axis 200-250 µm diam., dichotomously or flabellately branched, the apices usually divergent; lower axes appearing banded owing to greater concentration of cortical cells at nodes; internodal corticating cells in longitudinal rows; gland cells common among nodal cells; tetrasporangia embedded at nodes, 40-70(80) µm diam., making nodes torulose; spermatangia not seen in Calif. material; gonimoblasts lateral, terminating penultimate branchlets, without sterile subtending filaments.
Rare to common, on rocks in upper intertidal, rare subtidally (to 8 m), Wash. to I. Magdalena, Baja Calif.: common from Ore. to S. Calif; less common to south. Probable type locality: Clatsop Co., Ore.
Excerpt from Abbott, I. A., & Hollenberg, G. J. (1976). Marine algae of California. Stanford University Press, Stanford, California. xii [xiii] + 827 pp., 701 figs.