| Genus | Family | Order | Species | Genome length | Top marker | Markers | Primers | Action |
|---|---|---|---|---|---|---|---|---|
| Xanthium | Asteraceae | Asterales | 2 | 152–152 kb | trnH-psbA (84.4) | 264 | 95 | View |
| Xanthosoma | Araceae | Alismatales | 2 | 164–165 kb | trnS(GCU)-trnS (CGA) (86.5) | 271 | 90 | View |
| Xeranthemum | Asteraceae | Asterales | 3 | 152–152 kb | trnT-UGU-trnL-UAA (70.4) | 267 | 80 | View |
| Xerophyta | Velloziaceae | Pandanales | 14 | 155–156 kb | psbC-trnS-UGA (78.6) | 268 | 95 | View |
| Xylia | Fabaceae | Fabales | 2 | 176–178 kb | clpP-psbB (81.8) | 290 | 85 | View |
| Xylocarpus | Meliaceae | Sapindales | 2 | 159–159 kb | rpl22 (63.3) | 267 | 95 | View |
| Xylosalsola | Amaranthaceae | Caryophyllales | 2 | 151–151 kb | trnN-GUU-ndhF (66.1) | 273 | 90 | View |
| Xylosma | Salicaceae | Malpighiales | 2 | 157–157 kb | ndhC-trnV-UAC (90.5) | 265 | 100 | View |
| Xyris | Xyridaceae | Poales | 2 | 140–141 kb | trnC-GCA-rpoB (89.0) | 255 | 70 | View |
