Species;"Colony colour";"Colony shape";"Branching pattern";"Length of unbranched terminal branchlets";"Diameter of end branchlets (mm)";"Calyx height at branchlets";"Calyx arrangement at branchlets"
"M. plantaginea";db/w;fla;"irr, lat";10–50;2–3;0.7–1.2;"c, imbr"
"M. californica";ro;bu;"irr, lat";0.5–2.8;3–3.2;1.1–1.9;"c, slightly imbr"
"M. mortensenii";py;fla;irr;2–4;2–3;0.7–1;c
"M. subtilis sp. n.";py,w;"lat, fla";"irr, lat, dich";5–40;1.5–2;1–1.2;c