Table 1. Study taxa and voucher information.
| Cultivar name | Abbr | CRC# | Swingle name | Tanaka name |
| ‘Arizona 861 S-1′ citron* | ARZ | 3878 | Citrus medica L. | |
| Indian sour citron (Zamburi)* | IND | 661 | C. medica L. | |
| ‘South Coast Field Station’ citron | SCF | 3546 | C. medica L. | |
| Mountain citron* | HLM | 3780 | C. halimii B.C. Stone | |
| ‘Kalpi’ lime | KLP | 1455 | C. aurantifolia (Christm.) Swing. | C. webberi Wester |
| ‘Winged’ lime (Tamisan, Talamisan) | WGL | 2320 | C. aurantifolia (Christm.) Swing. | C. longispina Wester |
| ‘Mexican’ lime* | MEX | 3822 | C. aurantifolia (Christm.) Swing. | |
| ‘Palestine’ sweet lime* | PAL | 1482 | C. aurantifolia (Christm.) Swing. | C. limettioides Tanaka |
| ‘Frost Eureka’ lemon* | FRS | 3005 | C. limon (L.) Burm.f. | |
| ‘Frost Owari’ satsuma | FOW | 3178 | C. reticulata Blanco | C. unshiu Marc. |
| ‘Nasnaran’ mandarin* | AMB | 2485 | C. reticulata Blanco | C. amblycarpa Ochse. |
| ‘Tien Chieh’ mandarin* | TNC | 2590 | C. reticulata Blanco | |
| ‘Scarlet Emperor’ mandarin | SEM | 3326 | C. reticulata Blanco | |
| ‘Encore’ mandarin | ENC | 3569 | C. reticulata Blanco | |
| ‘Korai’ mandarin | NIP | 3228 | C. reticulata Blanco | C. nippokoreana Tanaka |
| ‘King’ mandarin* | KNG | 3845 | C. reticulata Blanco | C. nobilis Lour. |
| ‘Cleopatra’ mandarin* | CLE | 3844 | C. reticulata Blanco | C. reshni Hort. ex Tanaka |
| ‘Bouquet de Fleurs’ sour orange* | BDF | 571 | C. aurantium L. | |
| ‘Rubidoux’ sour orange* | RBD | 3855 | C. aurantium L. | |
| ‘Washington’ navel orange | WNO | 1241 | C. sinensis (L.) Osbeck | |
| ‘Kao Pan’ pummelo | KPN | 2242 | C. maxima (Burm.) Merrill | |
| ‘Kao Panne’ pummelo | KPE | 2248 | C. maxima (Burm.) Merrill | |
| ‘Mato Buntan’ pummelo | MTB | 3945 | C. maxima (Burm.) Merrill | |
| ‘Ichang’ papeda | ICH | 2327 | C. ichangensis Swing. | |
| ‘Hanayu’ papeda | HNU | 3469 | n/a | C. hanaju Siebold |
| ‘Flying Dragon’ trifoliate | FDR | 3330 | Poncirus. trifoliata (L.) Rafinesque | |
| ‘Pomeroy’ trifoliate | PMY | 1717 | P. trifoliata (L.) Rafinesque | |
| ‘Nagami’ kumquat | NGM | 3877 | Fortunella margarita Swingle | |
| Finger lime (common name) | MIC | 3672 | Microcitrus australasica Swingle | |
| n/a | 3287 | Atalantia ceylanica (Am.) Oliv. | ||
| n/a | 2879 | Naringi crenulata (Roxb.) Nicolson | ||
| n/a | 4043 | Swinglea glutinosa Merr. | ||
| n/a | 3286 | Citropsis gabunensis Swingle & Kellerman |
Abbreviations listed are used in some supplemental figures and tables. The species designations used by Swingle and Tanaka are shown (Tanaka names omitted where they are the same as the Swingle name to the left). CRC# number refers to identification number of accessions maintained at the Citrus Variety Collection, Riverside, California. Asterisk (*) indicates accessions with about 10% or higher level of admixture of different groups of citrus as analyzed in the present study utilizing SSR markers (Table S6).