NEW CHROMOSOME COUNTS OF ASIAN COSTACEAE AND INITIAL INSIGHTS INTO THE GENOME EVOLUTION OF THE FAMILY Author Van Caspel, Pim H Author Poulsen, Axel Dalberg Author Möller, Michael text Edinburgh Journal of Botany 2021 2021-03-10 78 337 1 13 http://dx.doi.org/10.24823/ejb.2021.337 journal article 10.24823/EJB.2021.337 1747-0036 10591056

Table 1. Known chromosome numbers of Costaceae, with region for each species and reference for each count

Species	Region	2n	n	Reference(s)
Chamaecostus cuspidatus (Nees & Mart.) C.D.Specht & D.W.Stev.	Neotropical	18		Raghavan & Venkatasubban (1943), Maas (1972, as Costus igneus N.E.Br.)
Cheilocostus lacerus (Gagnep.) C.D.Specht	Indochina	18		Chen et al. (1986)
Cheilocostus speciosus (J.Koenig) C.D.Specht	Australasia and	13		Chattopadhyay & Sharma (1983)
	Indomalaya	18		Sato (1948, 1960), Miège (1962), Chattopadhyay & Sharma (1983), Lodh & Basu (2013)
		27		Simmonds (1954), Nagendra & Abraham (1981), Chattopadhyay & Sharma (1983), Lohd & Basu (2013)
		36		Banerji (1940), Raghavan & Venkatasubban (1943), Chakravorti (1948), Sharma & Bhattacharyya (1959), Miège (1962), Nagendra & Abraham (1981), Chattopadhyay & Sharma (1983), Lohd & Basu (2013)
		72		Chattopadhyay & Sharma (1983)
Costus afer Ker Gawl.	Afrotropical	18		Miège (1962, as Costus deistelii K.Schum.), Gill (1978)
		36		Venkatasubban (1946), Subrahmanyam & Khoshoo (1986, as Costus megalobractea K.Schum.)
Costus arabicus L.	Neotropical	18		Mahanty (1970, as Costus discolor Roscoe), Maas (1972), Guerra (1988, as Costus brasiliensis K.Schum.)
		36		Venkatasubban (1946, as Costus glabratus Sw.)
Costus claviger Benoist	Neotropical	18		Simmonds (1954, as Costus niveo-purpureus Jacq.), Mahanty (1970, as Costus niveus G.Mey), Maas (1972)
Costus comosus (Jacq.) Roscoe	Neotropical	18		Simmonds (1954, as Costus friedrichseni i Petersen)
Costus curvibracteatus Maas	Neotropical	18		Guerra (1988)
Costus dhaninivatii K. Larsena	Thailand	18		Larsen (1965)
Costus dinklagei K.Schum.	Afrotropical	18		Miège (1962)
Costus dirzoi García-Mend. & Ibarra-Manr.	Neotropical	27		Vovides & Lascurain (1995)
		28		Vovides & Lascurain (1995, 28 = probably 3 x + 1)
Costus dubius (Afzel.) K.Schum.	Afrotropical	18		Gill (1978, as Costus zechii K.Schum.)
		36		Chen et al. (1986), Mahanty (1970, as Costus albus A.Chev.)
Costus erythrocoryne K.Schum.	Neotropical	18		Guerra (1988)
Costus giganteus Welw. ex Ridl.	Afrotropical	18		Miège (1962)
Costus glaucus Maas	Neotropical	18		Guerra (1988)