Oedogonium undulatum

Oedogonium undulatum (Breb.) A. Br.; De Bary, Abh. Senck
Nat. Ges. 1: 94. 1854; Hirn, Acta Soc. Sci.
Fenn. 27: 257. 1900.
Cymalonema confervaceum Kiitz. Sp. Alg. 375. 1849.
Conferva undulata Breb.; Kiitz. Sp. Alg. 375, as synonym. J°49.
Oedogonium undulatum var. Moebiusii Schmidle, Flora 82: 297 1?™-
Oedogonium undulatum var. interrupte-incisum Schroder, Forsch. Biol. bta. Tlon 5: ^8. levy.
Dioecious, nannandrous, gynandrosporous or idioandrosporous ; oogonia 1 or 2, subglobose or ellipsoid-globose, operculate, division inferior, wide; oospore globose or subglobose, quite filling oogonium, spore-wall smooth, sometimes thick; androsporangia to 7-seriate; vegetative cell undulate (4 undulate constrictions); basal cell elongate, not undulate; terminal cell (sometimes oogonium) apically obtuse; dwarf male elongate-obconic, usually on suffultory cell, rarely on other vegetative cell near oogonium, antheridium interior; vegetative cell 15-22 by 45-110 a; oogonium 48-56 by 50-75 M ; oospore 42-50 by 42-52(60) M ; androsporangmm 15-21 by 7-14 fi; dwarf male 8-10 by 48-65(70) /*. Type locality: Europe.
Distribution; Michigan, Indiana, Iowa, Florida, Wyoming.
Plate 24. /. 373.
191a. Oedogonium undulatum f. senegalense (Nordst.) Him, Acta Soc. Sci. Fenn. 27: 261. 1900. Oedogonium undulatum var. senegalense Nordst. Acta Univ. Lund 16 4 : 13. 1880. Oogonium and oospore smaller than the type; dwarf male shorter; oogonia to 5-seriate; vegetative cell with 3 median swellings, repand, the terminal swelling entire, 15-22 by 45—110 fi oogonium 42-52 by 4463 p; oospore 37-44 by 36-44/*; androsporangium 15-19 by 9-18 /*; dwarf male 6-8 by 36-46 ti. Type locality: Africa. Distribution: Massachusetts. Plate 24./. 374.