- 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
Illustration from DeCew's Guide to the Seaweeds of British Columbia, Washington, Oregon, and Northern California
Rhodoglossum affine (Harv.) Kyl.
Chondrus affinis Harvey 18413.: 408. Rhodoglossum affine (Harv.) Kylin 1928: 49.
Thalli in small, bushy, decumbent or erect tufts, 4-15 cm tall, often in bands +/- 0.5 m wide near tops of rocks, greenish-olive or reddish-purple to blackish; blades usually smooth, with 1 side concave, other side convex; two vegetative forms common, one with thalli 4-5 cm tall, having blades less than 2 mm wide, these repeatedly branched 6-8 times, the penultimate and ultimate dichotomies close together, the ultimate branches appearing fimbriate and congested (such plants most common in high midtidal), the other with thalli 12-15 cm tall, blades to 3 cm wide and usually more sparsely branched, occasionally with superficial and a few lateral proliferations (these plants common in low intertidal); reproductive structures as for genus, the cystocarps conspicuous, 1-2.5 mm diam.
Locally abundant, saxicolous, midtidal, occasionally lower, often associated with Gigartina papillata, Br. Columbia to I. Cedros, Baja Calif.; not as common south of San Luis Obispo Co. as northward. Type locality: Monterey, 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.
