- Blue markers: specimen records
- Yellow marker: type locality, if present
- Red markers: endpoints of range from literature
Farlowia J. Agardh 1876
Thalli erect, solitary or in clusters, arising from small, discoid bases. Erect portion freely branched, the branching distichous, alternate to subopposite. Branches compressed, with or without percurrent axes; on drying, some branches appearing to have midrib and broken lateral veins owing to formation of many rhizoidal filaments around axial strands. Cortex of compacted filaments in rows of 6-8 cells. Medulla of periclinally directed rhizoidal filaments grouped around uniaxial strand. Tetrasporangia rare, irregularly cruciately divided, forming irregular sori, scarcely modifying surrounding cortical cells. Spermatangia in superficial patches. Carpogonial branches and auxiliary cell branches of 10-18 cells. Carpogonium fusing with nutritive cell through a short process, producing 1 filament that connects with 1 or more successively remote intercalary auxiliary cells. Gonimoblasts small, formed in groups, raising thallus surface in irregular nemathecioid areas.
Farlowia compressa J. Ag.
J. Agardh 1876: 262; Smith 1944: 204; Abbott 1962a: 29.
Thalli 20-40(60) cm tall, coarse, rust red to deep red, drying to black; branching predominantly distichous, the ultimate branches expanded in upper portions of plants, 0.5-1.5 cm diam.; main axis 3-12 mm wide, varying throughout plant; lower axes thicker through midline than upper axes, appearing veinlike owing to increase in numbers of rhizoidal filaments arising from basal cells of laterals; broken, obliquely placed veins also at times conspicuous; reproductive structures rare, when present as for the genus.
Infrequent, saxicolous, low intertidal to subtidal (3 m), Hope I., Br. Columbia, to San Luis Obispo Co., Calif. Type locality: Monterey Bay, 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.
