| P Abelmoschus esculentus (Okra) |
| P Abelmoschus manihot (Manioc Hibiscus) |
| P Abelmoschus moschatus (Ambrette; Musk Okra; Tropical Jewel Hibiscus; Muskmallow) |
| P Abies alba (Silver-Fir) |
| P Abies balsamea (Balsam Fir) |
| P Abies sachalinensis (Japanese Fir; Shin-Yo-Yu) |
| P Abrus precatorius (Crab's Eye; Jequerity; Coral Beadplant; Indian Licorice; Licorice Vine; Love Bean; Lucky Bean; Minnie-Minnies; Prayer Be) |
| P Acacia catechu (Black Cutch; Catechu) |
| P Acacia decurrens (Green Wattle) |
| P Acacia farnesiana (Cassie; Huisache; Sweet Acacia; Opopanax; Popinac) |
| P Acacia lenticularis |
| P Acacia leucophloea (Pilang Bast) |
| P Acacia melanoxylon (Blackwood) |
| P Acacia modesta |
| P Acacia nilotica (Babul) |
| P Acacia senegal (Gum Arabic; Gum Arabic Tree; Kher; Senegal Gum; Sudan Gum Arabic) |
| P Acacia tortilis (Umbrella Thorn) |
| P Acalypha indica (Cancer Herb; Indian Acalypha; Copperleaf; Indian Nettle; Three-Seeded-Mercury) |
| P Acanthopanax gracilistylis (Wu Chia Pi) |
| P Acanthospermum hispidum |