Monographs Details: Oscillatoria willei N.L.Gardner
Authority: Gardner, Nathaniel L. 1927. New Myxophyceae from Porto Rico. Mem. New York Bot. Gard. 7: 1-144. pl. 1-23.
Description:Species Description - Plants forming an indefinite stratum; trichomes pale aeruginous, flexuose, uncinate to semi-spiral at the apices, blunt, 2.4-2.6 µ diam.; cells quadrate to 2 times as long, homogeneous, walls inconspicuous, not constricted; terminal cell blunt, rounded, not thickened.
Distribution and Ecology - Growing among water plants in a reservoir at the Experiment Station, Rio Piedras, no. 169, type, and 192 a; in a water fall in a brook of warm water, Coamo Springs, no. 369, and in a ditch at that spring, Coamo Springs, no. 391 a.
PLATE 7, FIGURE 67
Oscillatoria Willei is closely related structurally to O. laetevirens Crouan. It differs from that species in being smaller, in not being constricted at the cross walls, in not being acute at the apices, and in not being granular. The apices are at times almost spiral.