This page lists the number of species of the largest genera, sorted by genus size, decreasingly. The counts only consider names that are ☞ validly published under the ☞ ICNP, ☞ legitimate, and not ☞ rejected, and are currently treated as the ☞ correct name in LPSN. As could be expected from count data, the frequency distribution strongly deviates from a standard normal distribution. This is obvious from the statistics section and from the sizes of the largest genera shown below.
For the approximate number of taxonomic proposals per country see the page on corresponding authors. For the overall number of taxon names, see the page on numbers in LPSN. There is also a page on the number of taxon names per year.
Average: 5.39 species
Median: 2.00 species
Mode: 1 species
Streptomyces (726)
Pseudomonas (333) — Paenibacillus (307) — Flavobacterium (298) — Mycobacterium (196) — Nocardioides (166) — Corynebacterium (165) — Sphingomonas (160) — Clostridium (158) — Vibrio (151) — Chryseobacterium (148) — Microbacterium (142) — Nocardia (130) — Micromonospora (126) — Streptococcus (120) — Bacillus (110) — Hymenobacter (109) — Bifidobacterium (101) — Pedobacter (101)
Shewanella (97) — Rhizobium (96) — Paraburkholderia (93) — Amycolatopsis (89) — Deinococcus (89) — Paracoccus (86) — Acinetobacter (82) — Mucilaginibacter (80) — Actinomadura (78) — Halomonas (78) — Staphylococcus (72) — Arthrobacter (71) — Lysobacter (71) — Bradyrhizobium (70) — Sphingobacterium (69) — Leptospira (68) — Nonomuraea (68) — Pseudonocardia (68) — Legionella (65) — Enterococcus (63) — Massilia (63) — Mesorhizobium (63) — Novosphingobium (63) — Marinobacter (62) — Actinoplanes (58) — Rhodococcus (55) — Helicobacter (54) — Gordonia (53) — Bacteroides (52) — Mycoplasma (52) — Roseomonas (52) — Algoriphagus (50) — Methylobacterium (50) — Nocardiopsis (50) — Winogradskyella (50)
Lactobacillus (49) — Pseudoalteromonas (49) — Chitinophaga (47) — Spirosoma (47) — Pontibacter (46) — Sphingobium (46) — Campylobacter (45) — Flagellimonas (44) — Mycoplasmopsis (44) — Psychrobacter (44) — Agromyces (43) — Borrelia (42) — Marinomonas (41) — Cellulomonas (40) — Bartonella (39) — Halorubrum (39) — Thermococcus (39) — Photobacterium (38) — Spiroplasma (38) — Vreelandella (38) — Brevibacterium (37) — Devosia (37) — Saccharopolyspora (37) — Alteromonas (36) — Brevundimonas (36) — Burkholderia (36) — Cohnella (35) — Roseovarius (35) — Tenacibaculum (35) — Acetobacter (34) — Arcobacter (34) — Companilactobacillus (34) — Dyella (34) — Kitasatospora (34) — Leucobacter (34) — Virgibacillus (34) — Xanthomonas (34) — Actinomyces (33) — Cryobacterium (33) — Kribbella (33) — Limosilactobacillus (33) — Luteimonas (33) — Aeromonas (32) — Brevibacillus (32) — Neisseria (32) — Qipengyuania (32) — Aquimarina (31) — Glycomyces (31) — Microbulbifer (31) — Polynucleobacter (31) — Lacticaseibacillus (30) — Maribacter (30) — Streptosporangium (30) — Alicyclobacillus (29) — Levilactobacillus (29) — Oceanobacillus (29) — Polaribacter (29) — Rickettsia (29) — Xenorhabdus (29) — Caballeronia (28) — Dyadobacter (28) — Listeria (28) — Pandoraea (28) — Prevotella (28) — Rheinheimera (28) — Treponema (28) — Brachybacterium (27) — Comamonas (27) — Eubacterium (26) — Kocuria (26) — Lactococcus (26) — Methanobacterium (26) — Nesterenkonia (26) — Planococcus (26) — Yersinia (26) — Aeromicrobium (25) — Azospirillum (25) — Brucella (25) — Halobacillus (25) — Microvirga (25) — Neobacillus (25) — Thermus (25) — Undibacterium (25) — Enterobacter (24) — Sulfitobacter (24) — Anoxybacillus (23) — Blautia (23) — Colwellia (23) — Lentzea (23) — Moraxella (23) — Photorhabdus (23) — Ruegeria (23) — Saccharothrix (23) — Serratia (23) — Lysinibacillus (22) — Natrinema (22) — Sphingopyxis (22) — Vagococcus (22) — Achromobacter (21) — Christiangramia (21) — Demequina (21) — Ensifer (21) — Gracilibacillus (21) — Pectobacterium (21) — Peptoniphilus (21) — Pseudoxanthomonas (21) — Thalassotalea (21) — Weissella (21) — Acidovorax (20) — Ancylobacter (20) — Cupriavidus (20) — Geodermatophilus (20) — Lactiplantibacillus (20) — Lentibacillus (20) — Ligilactobacillus (20) — Marinobacterium (20) — Metabacillus (20) — Microlunatus (20) — Pantoea (20) — Peribacillus (20) — Rhodovulum (20) — Stenotrophomonas (20) — Actinokineospora (19) — Agrobacterium (19) — Desulfovibrio (19) — Duganella (19) — Exiguobacterium (19) — Fusobacterium (19) — Komagataeibacter (19) — Lentilactobacillus (19) — Ramlibacter (19) — Rhodanobacter (19) — Veillonella (19) — Actinoallomurus (18) — Actinobacillus (18) — Aequorivita (18) — Alcanivorax (18) — Billgrantia (18) — Citrobacter (18) — Erwinia (18) — Geomonas (18) — Metamycoplasma (18) — Porphyromonas (18) — Pseudidiomarina (18) — Salinicoccus (18) — Aureimonas (17) — Erythrobacter (17) — Frankia (17) — Gluconobacter (17) — Klebsiella (17) — Leuconostoc (17) — Myroides (17) — Phenylobacterium (17) — Sporosarcina (17) — Acholeplasma (16) — Arenimonas (16) — Blastococcus (16) — Cytobacillus (16) — Dactylosporangium (16) — Gemmobacter (16) — Hydrogenophaga (16) — Psychroflexus (16) — Roseibium (16) — Tsukamurella (16) — Actinomycetospora (15) — Algibacter (15) — Anaerococcus (15) — Bordetella (15) — Halopseudomonas (15) — Halorussus (15) — Kineococcus (15) — Methanobrevibacter (15) — Noviherbaspirillum (15) — Ornithinimicrobium (15) — Pseudooceanicola (15) — Psychromonas (15) — Rhodobacter (15) — Secundilactobacillus (15) — Tessaracoccus (15) — Thermoanaerobacter (15) — Chromobacterium (14) — Georgenia (14) — Haemophilus (14) — Leifsonia (14) — Megasphaera (14) — Mesobacillus (14) — Methanosarcina (14) — Phocaeicola (14) — Phyllobacterium (14) — Prauserella (14) — Promicromonospora (14) — Pseudarthrobacter (14) — Roseateles (14) — Saccharomonospora (14) — Sphaerisporangium (14) — Streptacidiphilus (14) — Aerococcus (13) — Aliidiomarina (13) — Arenibacter (13) — Aurantiacibacter (13) — Bizionia (13) — Bosea (13) — Chlamydia (13) — Haloarcula (13) — Haloferax (13) — Herbaspirillum (13) — Idiomarina (13) — Lacinutrix (13) — Liquorilactobacillus (13) — Microbispora (13) — Nakamurella (13) — Niabella (13) — Nonlabens (13) — Parabacteroides (13) — Pseudodesulfovibrio (13) — Rahnella (13) — Salegentibacter (13) — Salinicola (13) — Salinimicrobium (13) — Selenomonas (13) — Shimia (13) — Sporolactobacillus (13) — Thiomicrorhabdus (13) — Variovorax (13) — Williamsia (13) — Actinopolyspora (12) — Capnocytophaga (12) — Carnobacterium (12) — Caulobacter (12) — Corallococcus (12) — Curtobacterium (12) — Desulfosporosinus (12) — Dickeya (12) — Dietzia (12) — Fictibacillus (12) — Fructobacillus (12) — Geobacillus (12) — Geobacter (12) — Gluconacetobacter (12) — Hyphomonas (12) — Jannaschia (12) — Lewinella (12) — Luteolibacter (12) — Lutibacter (12) — Macrococcus (12) — Mesoplasma (12) — Methanolobus (12) — Pasteurella (12) — Schaalia (12) — Segatella (12) — Thalassospira (12) — Thauera (12) — Thermomonas (12) — Ureibacillus (12) — Vogesella (12) — Actinophytocola (11) — Adhaeribacter (11) — Agrococcus (11) — Alistipes (11) — Apilactobacillus (11) — Brenneria (11) — Cellvibrio (11) — Ferrimonas (11) — Fulvivirga (11) — Glutamicibacter (11) — Granulicella (11) — Halanaerobium (11) — Hyphomicrobium (11) — Isoptericola (11) — Jiangella (11) — Larkinella (11) — Mesomycoplasma (11) — Mesonia (11) — Methanoculleus (11) — Methylophaga (11) — Methylorubrum (11) — Modestobacter (11) — Nitratireductor (11) — Paraglaciecola (11) — Pediococcus (11) — Polyangium (11) — Providencia (11) — Ralstonia (11) — Rothia (11) — Rubrobacter (11) — Sphingorhabdus (11) — Spirochaeta (11) — Terrimonas (11) — Trinickia (11) — Alkalibacterium (10) — Alkaliphilus (10) — Allorhizobium (10) — Altererythrobacter (10) — Arcanobacterium (10) — Aromatoleum (10) — Asticcacaulis (10) — Celeribacter (10) — Clavibacter (10) — Croceicoccus (10) — Cyclobacterium (10) — Emticicia (10) — Endozoicomonas (10) — Flavihumibacter (10) — Fructilactobacillus (10) — Gemella (10) — Geothrix (10) — Halalkalibacter (10) — Halobellus (10) — Halococcus (10) — Heyndrickxia (10) — Hoylesella (10) — Janibacter (10) — Kaistia (10) — Kangiella (10) — Kibdelosporangium (10) — Kushneria (10) — Magnetospirillum (10) — Methylomonas (10) — Myxococcus (10) — Ornithinibacillus (10) — Palleronia (10) — Parapedobacter (10) — Priestia (10) — Proteus (10) — Rhodopseudomonas (10) — Rodentibacter (10) — Rufibacter (10) — Ruminococcus (10) — Salipiger (10) — Shinella (10) — Sinomonas (10) — Streptomonospora (10) — Sulfurimonas (10) — Sulfurospirillum (10) — Terrabacter (10) — Thioalkalivibrio (10) — Thiothrix (10) — Tsuneonella (10) — Tumebacillus (10)