Index to Chromosome Counts by Genus

Probable Base Number for Genus in Parentheses

* No published chromosome count is available

Acanthostyles (10)	Acritopappus (9)	Adenocritonia*	Adenostemma (10)	Ageratella*
Ageratina (17)	Ageratum (10)	Agrianthus*	Alomia (10)	Alomiella*
Amboroa*	Amolinia (10)	Antillia*	Aristeguietia (10)	Arrojadocharis*
Asanthus*	Ascidiogyne (10)	Asplundianthus (10)	Austrobrickellia (10)	Austrocritonia*
Austroeupatorium (10)	Ayapana (10)	Ayapanopsis*	Badilloa*	Bahianthus (10)
Barroetea (9)	Barrosoa (10)	Bartlettina (16)	Bejaranoa (10)	Bishopiella*
Bishovia (10)	Blakeanthus*	Brickellia (9)	Brickelliastrum (10)	Campovassouria (10)
Campuloclinium (10)	Carminatia (10)	Carphephorus (10)	Carphochaete (11, 12)	Carterothamnus*
Castanedia*	Cavalcantia*	Chacoa*	Chromolaena (10)	Ciceronia*
Condylidium (10)	Condylopodium*	Conocliniopsis (10)	Conoclinium (10)	Corethamnium*
Critonia (10)	Critoniadelphus*	Critoniella (10)	Cronquistia (12)	Cronquistianthus (10)
Crossothamnus (10)	Dasycondylus*	Decachaeta (16)	Diacranthera*	Dissothrix*
Disynaphia (10)	Dyscritogyne*	Eitenia*	Ellenbergia*	Erythradenia (16)
Eupatoriastrum (16)	Eupatorina*	Eupatorium (10)	Eupatoriopsis*	Eutrochium (10)
Ferreyrella*	Fleischmannia (4, 10)	Fleischmanniopsis (10)	Flyriella (10)	Garberia (10)
Gardnerina*	Gongrostylus*	Goyazianthus (10)	Grazielia (10)	Grisebachianthus*
Grosvenoria*	Guayania*	Guevaria (10)	Gymnocondylus*	Gymnocoronis (10)
Gyptidium*	Gyptis (10)	Hartwrightia (10)	Hatschbachiella (10)	Hebeclinium (10)
Helogyne*	Heterocondylus (10)	Hofmeisteria (17, 18, 19)	Hughesia*	Idiothamnus*
Iltisia*	Imeria*	Isocarpha (10)	Jaliscoa (17)	Jaramilloa*
Kaunia (ca20-26)	Koanophyllon (10)	Kyrsteniopsis (10)	Lasiolaena*	Lepidesmia (10)
Leptoclinium*	Liatris (10)	Litothamnus (10)	Litrisa (10)	Lomatozona*
Lorentzianthus (10)	Lourteigia (10)	Macropodina*	Macvaughiella (12)	Malmeanthus*
Malperia (10)	Matudina (16)	Metastevia*	Mexianthus (16)	Microspermum (12)
Mikania (17, 18, 19)	Monogereion*	Morithamnus*	Neocabreria*	Neocuatrecasia*
Neohintonia*	Neomirandea (17, 25)	Nothobaccharis*	Oaxacania*	Ophryosporus (10)
Osmiopsis*	Oxylobus (16)	Pachythamnus*	Paneroa*	Parapiqueria*
Peteravenia (10)	Phalacraea (10)	Phanerostylis (9)	Phania*	Piptothrix (17)
Piqueria (11, 12)	Piqueriella*	Piqueriopsis*	Planaltoa (10)	Platypodanthera (10)
Pleurocoronis (9)	Polyanthina (10)	Praxeliopsis	Praxelis (10)	Prolobus*
Pseudobrickellia (10)	Pseudokyrsteniopsis (10)	Radlkoferotoma*	Raulinoreitzia (10)	Revealia (11)
Santosia*	Sartorina*	Scherya*	Sciadocephala (10)	Sclerolepis (15)
Shinnersia (15)	Siapaea*	Spaniopappus*	Sphaereupatorium*	Standleyanthus*
Stevia (11, 12)	Steviopsis*	Steyermarkina*	Stomatanthes (10)	Stylotrichium*
Symphyopappus (10)	Tamaulipa (10)	Teixeiranthus	Trichocoronis (15)	Trichogonia (10)
Trichogoniopsis (10)	Trilisa (10)	Tuberostyles*	Uleophytum*	Urbananthus*
Urolepis (10)	Viereckia	Vittetia*