- Blue markers: specimen records
- Yellow marker: type locality, if present
- Red markers: endpoints of range from literature
Liagora Lamouroux 1812
Thalli calcified, erect, cylindrical to slightly flattened, repeatedly branched. Branches usually tapering to apex, either unbranched at apex or bifurcate. Medulla of slender to moderately thickened elongate cells, these interwoven, frequently calcified. Cortex lightly to heavily calcified, of dichotomously branched ovate to spherical cells, the terminal cells usually smaller than the subterminal. Chloroplast single, large, parietal, usually without pyrenoid. Plants usually dioecious. Spermatangia in clusters terminating cortical cells. Carpogonial branches of 3-5 cells, borne laterally. Zygote dividing transversely after fertilization. Gonimoblast relatively large, usually surrounded by branched, sterile filaments, these in some species stopping below carposporangia, in other species exceeding carposporangia. Carposporangia usually of undivided terminal cells, but some species divided cruciately (carpotetraspores). A microscopic, Acrochaetium-like, filamentous stage with tetrasporangia known for 2 species.
Liagora californica Zeh
Zeh 1912: 271; Dawson 1953a: 42.
Thalli bushy, compressed below, terete above, repeatedly dichotomously branched, 6-12(16) cm tall, with bright red apices, grayish-white below where heavily calcified; medulla calcified throughout thallus; cortical filaments branched 3 or 4 times; cells ovate to rectangular; tetrasporangia unknown; plant dioecious; spermatangia clustered on modified terminal cortical cells; carpogonial branch of 4 or 5 cells; gonimoblast surrounded by large number of sterile filaments.
Infrequent, saxicolous, lower intertidal to upper subtidal, Santa Catalina I. and Pt. Loma (San Diego Co.), Calif., and I. Guadalupe, Baja Calif. Type locality: Avalon (Santa Catalina I.), 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.
