Major items
| Organic | Scientific name | Common name | Part | Origin |
| Zanthoxyllum americanum Mill | Northern Prickly Ash | N-America | ||
| bio | Zanthoxylum alatum Roxb (-> Z armatum DC)Nepal Sichuan Pepper | Nepal Sichuan Pepper | pericarp | Indian Sub |
| bio | Zanthoxylum armatum DC | Nepal Sichuan Pepper | pericarp | Indian Sub |
| Zanthoxylum clava-herculis L | Southern Prickly Ash | |||
| Zanthoxylum leprieurii Guill & Perr | fruit | W-Africa | ||
| Zanthoxylum piperitum (L) DC | Japanese Pepper | seed | China | |
| Zanthoxylum zanthoxyloides (Lam) Zepern&Senegal Prickly Ash | Senegal prickly ash | seed | W-Africa | |
| Zea mays L | Corn | silk | ||
| Zingiber officinale Roscoe | Ginger | W-Africa | ||
| Zizia aurea (L) WDJKoch | Golden Alexanders | |||
| Ziziphus joazeiro Mart | Jua | bark | S-America | |
| Ziziphus jujuba Mill | Chinese Date | fruit | China | |
| Ziziphus jujuba Mill var spinosa (Bunge) Hu exHChinese Date | Chinese Date | seed | China | |
| Ziziphus spina christi (L) Desf | Christ's Thorn | herb | MidEast | |
| Ziziphus spinosa (Bunge) Hu ex F H Chen (-> ZChineseMill var spinosa (Bunge) Hu ex H F Chow) | Chinese Date | |||
| Ziziphus vulgaris Lam (-> Z jujuba Mill var jujuba) | Jujubee | seed WC, whl | N-America | |
| Zootrophion aguirrei | Ecuador | |||
| Zootrophion alvaroi | Ecuador | |||
| Zootrophion atropurpureum | Ecuador | |||
| Zootrophion beloglottis | Ecuador | |||
| Zootrophion dayanum | Ecuador | |||
| Zootrophion dodsonii | Ecuador | |||
| Zootrophion endresianum | Ecuador | |||
| Zootrophion griffin | Ecuador | |||
| Zootrophion hirtzii | Ecuador | |||
| Zootrophion hypodiscus | Ecuador | |||
| Zootrophion lappaceum | Ecuador | |||
| Zootrophion machaqway | Ecuador | |||
| Zootrophion niveum | Ecuador | |||
| Zootrophion trivalve | Ecuador | |||
| Zootrophion ximenae | Ecuador |
