Cosmarium rectangulare var. cambrense
Cosmarium rectangulare var. hexagonum
(tree size 1)
Cosmarium rectangulare var. rectangulare
Cosmarium rectangulare var. africanum
Cosmarium rectangulare var. altius
Cosmarium rectangulare var. angustius
Cosmarium rectangulare var. australe
(tree size 1)
Cosmarium rectangulare var. biretum
(tree size 2)
Cosmarium rectangulare var. boldtii
(tree size 1)
Cosmarium rectangulare var. croasdaleae
Cosmarium rectangulare var. cyclopeum
Cosmarium rectangulare var. dentatum
Cosmarium rectangulare var. finmarkiae
Cosmarium rectangulare f. granulatum
Cosmarium rectangulare f. major
Cosmarium rectangulare f. majus
Cosmarium rectangulare var. minus
Cosmarium rectangulare f. multigranulatum
Cosmarium rectangulare var. nodulatum
(tree size 1)
Cosmarium rectangulare var. notatum
Cosmarium rectangulare var. ocellatum
Cosmarium rectangulare var. papillatum
Cosmarium rectangulare var. patereforme
Cosmarium rectangulare var. quadrigeminatum
(tree size 1)
Cosmarium rectangulare var. incrassatum
Cosmarium rectangulare var. subrectangulare
Cosmarium rectangulare f. rectilinea
Cosmarium rectangulare f. minor
Cosmarium rectangulare f. rectilinearis
Cosmarium rectangulare var. reniforme
Cosmarium rectangulare var. repandum
Cosmarium rectangulare var. rotundatum
Cosmarium rectangulare var. subhexagonum
(tree size 1)
Cosmarium rectangulare var. subreniforme
Cosmarium rectangulare var. sulcatum
Cosmarium rectangulare var. eichlerianum
Cosmarium rectangulare var. saxonicum
Cosmarium rectangulare f. angustior
Cosmarium rectangulare f. latior