Silhouettes of three fucoid populations from Brave Boat Harbor, Maine showing morphological variability. Attached Fucus spiralis ranging from germlings (A, group of 8), to a pair of reproductively mature adults (B), to residual and proliferous specimens (C, group of 5). Detached specimens of F. spiralis ecad lutarius grading from large, fragmented fronds (D, group of 5), to more proliferous, smaller plants (E, group of 8). Turf-like populations of muscoides-like Fucus ranging from tufted, elongated specimens (F, group of 12), to short, individual fronds (G, group of 18), to minute plants (H, group of 22). (Rhodora Vol. 103, No. 914, 2001)