green algae
The green algae (singular: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as ...
Frank Shipley Collins
Frank Shipley Collins (1848–1920) was an American botanist and algologist specializing in the study of marine algae.Makers of American Botany, Harry Baker Humphrey, Ronald Press Company, Library of Congress Card Number 61-18435 He was a pio ...
(1848–1920) was an American botanist and algologist specializing in the study of marine algae.
The genus was
circumscribed
In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the vertices of the polygon. The center of this circle is called the circumcenter and its radius is called the circumradius.
Not every polyg ...
by
William Albert Setchell
William Albert Setchell (April 15, 1864 – April 5, 1943) was an American botanist and marine phycologist who taught at the University of California, Berkeley, where he headed the Botany Department. Among his publications are the ''Phycotheca ...
in Univ. Calif. Publ. Bot. Vol.1 on page 204 in 1903.