Primary seed sources of Gleditsia species used in biochemical analyses.
| Species | Arboretum | Country |
|---|---|---|
| amorphoides (Gris.) Taub. | Buenos Aires | Argentina |
| aquatica Marsh. | Morris Arboretum | Philadelphia, Pa. USA |
| caspica Desf. | Taschkent | USSR |
| delavayi Franch. | Taschkent | USSR |
| fera (Lour.) Merr. | Agric. & Fisheries Dept. | Hong kong |
| japonica Miq. | Aritaki Arboreum | Japan |
| japonica var. koraiensis Nakai | Forest Expt. Sta. | Korea |
| macracantha Desf. | Univ. Athens | Greece |
| melanacantha Tang Wang | U.S. Plant Introd. Sta. | Glenn Dale, Md. USA |
| microphylla Gord. (heretophylla Bunge) | Taschkent | USSR |
| sinensis Lam. | U.S. Plant Introd. Sta. | Chico, Calif. USA |
| x texana Sarg. | Taschkent | USSR |
| triacanthos L. | various | US and Foreign |