Silva Center for Phycological Documentation: Index Nominum Algarum

The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here

Results from INA database

NameAuthorSourceCitationYear
Gloionema dichotomumGreville Fl. Edin.: 301 1824
Gomphonema dichotomumKützing Linnaea 8: 569, fig. 48 1834
Polyphacum dichotomumJ. Agardh Linnaea 15: 3 1841
Protonema dichotomumKützing Natuurk. Verh. Holland. Maatsch. Wet. Haarlem, ser. 2, 1: 60, 61, 62, pl. O: p.p. 1841
Nemastoma dichotomumJ. Agardh Alg. Medit.: 91 1842
Gelidium crinale var. subdichotomumArdissone Florid. Ital. 2{1}: 23 1875
Thamnoclonium dichotomum(J. Agardh) J. Agardh Sp. Alg. 3{1}: 168 1876
Spongodendron dichotomumZanardini Nuovo Giorn. Bot. Ital. 10: 38, no fig. 1878
Dermonema dichotomumGreville ex Heydrich Hedwigia 33: 289, pl. XV: figs. 5-10 1894
Dichotomum elegansW. West & G.S. West Trans. Linn. Soc. London, Bot. 5: 270, pl. 16: fig. 33 1896
Cladogramma dichotomum(Brun) Kuntze Rev. Gen. Pl. 3{3}: 401 1898
Ceramium subdichotomumWeber-van Bosse Siboga-Exped. Monogr. 59c: 333, fig. 125 1923
Codium dichotomum f. proliferumVouk Acta Adriat. 1{8}: 15, fig. 5 (2), pl. IV: fig. 2; pl. V: fig. 2 1936
Iridophycus dichotomus_('dichotomum')Setchell & N.L. Gardner Proc. Natl. Acad. Sci. 22: 471 1936
Heterohormogonium schizodichotomumJ. Copeland Ann. New York Acad. Sci. 36: 65 1936
Codium dichotomum f. furcatum(O.C. Schmidt) Vouk Acta Adriat. 1{8}: 15 (key) 1936
Gloioderma subdichotomumLevring in Skottsberg Nat. Hist. Juan Fernandez 2: 643, fig. 16, pl. 53: fig. 1 1941
Metagoniolithon chara var. dichotomumDucker Austral. J. Bot. 27: 96, fig. 14 1979
Spatoglossum dichotomumC.K. Tseng & B. Lu apud B. Lu & C.K. Tseng in C.K. Tseng (ed.) Common seaweeds of China: 200, pl. 101: fig. 3 1983
Fimbrifolium dichotomum subsp. veprecula(J. Agardh) L.P. Perestenko Krasnye vodorosli dal'nevostochnykh morej Rossii: 116 1994
Dictyosphaerium dichotomumH.U. Ling & R.D. Seppelt Arch. Hydrobiol. Suppl. 124 (Algol. Stud. 89): 57, figs. 13-17, 20-23 1998
Nemastoma dichotomum var. biasolettianum(Kützing) C. Rodríguez-Prieto, M. Verlaque, & A. Vergés in C. Rodríguez-Prieto, A. Vergés, N. Sánchez, L. Polo, & M. Verlaque Bot. Mar. 47: 45 2004
Nemastoma dichotomum var. caulescens(Kützing) C. Rodríguez-Prieto, M. Verlaque, & A. Vergés in C. Rodríguez-Prieto, A. Vergés, N. Sánchez, L. Polo, & M. Verlaque Bot. Mar. 47: 45 2004
Nemastoma dichotomum var. incrassatum(Kützing) C. Rodríguez-Prieto, M. Verlaque, & A. Vergés in C. Rodríguez-Prieto, A. Vergés, N. Sánchez, L. Polo, & M. Verlaque Bot. Mar. 47: 46 2004
Cosmarium dichotomumP.F.M. Coesel & M. Dingley Syst. Geogr. Pl. 75: 38, figs. 9, 10 2005
Pachyarthron orbignianum subsp. dichotomum(Manza) C.W. Schneider & M.J. Wynne Bot. Mar. 50: 231 2007
Nemastoma dichotomum var. longitrichogynum(Ercegovic) A. Athanasiadis Phycologia Europaea Rhodophyta: 660 2016
Acanthorytidodiacrodium dichotomumTimofeev image
Batrachospermum dichotomumA.W. Roth image
Ceramium dichotomum(L.) Roth image
Ceramium dichotomumPius Titius image
Ceramium fruticulosum f. dichotomum_('dichotoma')Petersen image
Chaetangium dichotomumF.T. Kützing image
Codium dichotomum(Hudson) Setchell image
Codium dichotomum f. attenuatumVouk image
Codium dichotomum f. candelabrum(Schiller) Vouk image
Codium dichotomum f. coralloidesKützing image
Codium dichotomum f. dichotomumVouk image
Codium dichotomum f. divaricatum(C. Agardh) Vouk image
Codium dichotomum f. intermediumVouk image
Codium dichotomum f. irregulareVouk image
Codium dichotomum f. novozelandicum_('novo-zelandicum')Dellow image
Codium dichotomumS.F. Gray image
Codium dichotomum subvar. yezoenseTokida image
Codium dichotomum var. marginiferum_('marginifer')S.F. Gray image
Cohnidonum dichotomum(Cohn) O. Kuntze image
Dermonema dichotomumGreville image
Dermonema dichotomumHarvey ex Heydrich image
Dichophyllium dichotomum(Hudson) Kützing image
DICHOTOMUMWest & West image
Dichotomum bibrachiatum(Reinsch) West & West image
Dichotomum bibrachiatum var. cymatium(West & West) West & West image
Dichotomum elegansWest & West image
Epiphyton subdichotomumKorde image
Eucheuma dichotomumWeber-van Bosse image
Fimbrifolium dichotomum(Lepechin) G.I. Hansen image
Gomphonema dichotomum f. attenuatum(E.E. Manguin) P. Compère image
Gomphonema dichotomum var. affine(F.T. Kützing) G.L. Rabenhorst image
Gomphonema dichotomum var. auritum(A.K.H. Braun) G.L. Rabenhorst image
Gomphonema dichotomum var. sessileF.T. Kützing image
Gomphonema dichotomum var. sessileL.A. Brebisson ex G.L. Rabenhorst image
Gomphonema dichotomum var. vibrio(C.G. Ehrenberg) P. Compère image
Gomphonema dichotomum-sessileL.A. Brebisson image
Gomphonema gracile var. dichotomum(F.T. Kützing) H.F. Van Heurck image
Gomphonema intricatum var. dichotomum_('dichotoma')A. Grunow image
Goniotrichum dichotomumKützing image
Hypoglossum dichotomum(J. Hooker & Harvey) Kützing image
Inochorion dichotomumKützing image
Iridophycus subdichotomus_('subdichotomum')Nagai image
Lithophyllum incrustans f. subdichotomum_('subdichotoma')Heydrich image
Lithophyllum incrustans var. subdichotomum_('subdichotoma')(Heydrich) Me. Lemoine image
Myrionema dichotomumNoda & Honda image
Nemalion lubricum var. dichotomumCrouan frat. image
Nitophyllum laceratum var. dichotomum "Kützing" image
Platoma dichotomum_('dichotoma')Schousboe image
Pleonosporium dichotomumNoda image
Plocamium dichotomumSchousboe image
Polysperma dichotomum(DC) Kuntze image
Protonema dichotomumKützing image
Sargassum cymosum var. dichotomumMontagne image
Sargassum dichotomum var. filiformisWebb & Despreaux image
Sargassum dichotomum var. intricatumWebb & Despreaux image
Spongodium dichotomumLamouroux image
Spongotrichum dichotomumKützing image
Thamnoclonium dichotomum var. codioidesJ. Agardh image