| Latin Name | Common Name | Family | Synonyms | Edibility Rating | Medicinal Rating |
| Abelia triflora | Indian Abelia | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Anemarrhena asphodeloides | Zhi Mu | Asphodelaceae | | 0 | 3 |
| Bromus ramosus | Hairy Brome | Poaceae or Gramineae | Zerna ramosa. (Huds.)Lindm. | 0 | 1 |
| Delphinium semibarbatum | Zalil | Ranunculaceae | D. zalil. Aitch.&Hemsl. | 0 | 1 |
| Diospyros conzattii | Zapote negro mont's, zapotillo. | Ebenaceae | Diospyros gomeziorum Provance & A.C.Sanders; Diospyros gomeziorum Provance & A.C.Sanders; Diospyros | 4 | 0 |
| Ephedra intermedia | Zhong Ma Huang | Ephedraceae | | 1 | 4 |
| Fritillaria thunbergii | Zhe Bei Mu | Liliaceae | F. collicola. Hance. F. verticillata thunbergii. | 2 | 3 |
| Lardizabala biternata | Zabala Fruit | Lardizabalaceae | | 3 | 0 |
| Microberlinia bisulcata | Zingana | Fabaceae | Berlinia bifurcata (A.Chev.) Troupin Berlinia bisulcata (A.Chev.) Troupin | 0 | 0 |
| Microberlinia brazzavillensis | Zingana | Fabaceae | | 0 | 0 |
| Osmunda japonica | Zenmai | Osmundaceae | | 2 | 0 |
| Phyllostachys flexuosa | Zig-Zag Bamboo, Drooping timber bamboo | Poaceae or Gramineae | Bambusa flexuosa. | 3 | 0 |
| Tesing-Testing | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing Botanic | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing Botanic2 | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing Botanic4 | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing_22july | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing3 | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing3 Harish | | Harish | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing3 Harish1 | | Harish | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing4 | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Tesing-Testing5 | | Caprifoliaceae | Zabelia triflora. (Wallich.)Makino. | 0 | 0 |
| Zanthoxylum alatum | Winged Prickly Ash | Rutaceae | Z. armatum. | 3 | 2 |
| Zanthoxylum clava-herculis | Hercules Club. Prickly Ash - Southern, Hercules' club, Southern Prickly Ash | Rutaceae | Zanthoxylum carolinianum. Zanthoxylum catesbianum. Zanthoxylum clavatum. | 2 | 3 |
| Zanthoxylum planispinum | Winged Prickly Ash | Rutaceae | Z. alatum planispinum. Z. alatum subtrifoliatum. | 3 | 2 |
| Zanthoxylum simulans | Szechuan Pepper, Chinese-pepper, Prickly Ash | Rutaceae | Zanthoxylum acanthophyllum. Zanthoxylum argyi. Zanthoxylum podocarpum | 3 | 2 |
| Zelkova serrata | Japanese Zelkova, Saw Leaf Zelkova | Ulmaceae | Z. acuminata. Z. formosa. Z. hirta. Z. keaki. Abelicea hirta. Corchorus hirtus. non L. C. serr | 1 | 0 |
| Zieria smithii | Sandfly Bush | Rutaceae | Z. arborescens. Z. lanceolata. | 0 | 1 |
| Zizania latifolia | Manchurian Wild Rice | Poaceae or Gramineae | Z. caducifolia. | 4 | 1 |
| Ziziphus jujuba | Jujube | Rhamnaceae | Z. sativa. Z. vulgaris. Z. zizyphus. (L.)Karsten. Rhamnus zizyphus. | 4 | 3 |
| Zoysia japonica | Korean Lawn Grass | Poaceae or Gramineae | Z. pungens. non Willd. Z. pungens japonica. Osterdamia japonica. | 1 | 0 |