Contains 8 accepted taxa overall.
Characteristics
Classification
Citation
CITRUS Linnaeus, Sp. Pl. 782. 1753.
-
TYPE: Citrus medica Linnaeus. Lectotypified by P. Wilson, in Britton, N. Amer. Fl. 25: 221. 1911.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Citrus medica | CITRON | Not Native FAC (NWPL) | ||
| Citrus reticulata | TANGERINE | Not Native UPL (NWPL) | ||
| Citrus trifoliata | HARDY ORANGE | Not Native | ||
| Citrus x aurantiifolia | KEY LIME; MEXICAN LIME | Not Native | ||
| Citrus x aurantium | SOUR ORANGE; GRAPEFRUIT; SWEET ORANGE | Not Native FACU (NWPL) | ||
| Citrus x limon | LEMON | Not Native UPL (NWPL) | ||
| Citrus x microcarpa | CALAMONDIN | Not Native | ||
| Citrus x taitensis | MANDARIN LIME; ROUGH LEMON | Not Native |
Identification Key
1. Leaflets 3
1. Leaves simple or leaflets 1
2
2. Leaves lacking an apparent articulation between the petiole and the blade; fruit to 25 cm long, the rind (pericarp) wider than the pulp (sarcocarp)
2. Leaves with a evident articulation between the petiole and the blade; fruit rind (pericarp) narrower than the pulp (sarcocarp)
3
3. Flower bud and petal outer surface pinkish or purplish
4
3. Flower bud and petal outer surface white or cream
5
4. Fruit with a truncate to depressed, sunken nipple at the apex
4. Fruit with a prominent apical nipple
5. Flowers to 25 mm wide, petals 8-12 mm long; fruit to 4(-5) cm wide
6
5. Flowers >25 mm wide, petals 14-25 mm long; fruit 3-15 cm wide
7
6. Mature fruit with an apical nipple, the rind green to yellow
6. Mature fruit depressed or rounded at the apex, the rind orange
7. Petiole wings absent, or wing on one side subequal to narrower than the petiole; fruit rind 1(4) mm thick, easily removed, scarcely adherent to sarcocarp
7. Petiole wing on one side usually subequal to wider than the petiole; fruit rind 5-12 mm thick, adherent to sarcocarp, not easily removed
8
8. Cotyledons green; fruit 8-14 cm wide (grapefruit)
8. Cotyledons white; fruit 4.5-8 cm wide
9
9. Crushed leaf with a camphor-like odor; fruit often depressed globose, the rind rough, the juice sour (sour orange)
9. Crushed leaf without a camphor-like odor; fruit subglobose, the rind smooth, the juice sweet (sweet orange)
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Aurantium | Aurantium Miller, Gard. Dict. Abr., ed. 4. 1754. | TYPE: Non designatus. | |
| Citreum | Citreum Miller, Gard. Dict. Abr., ed. 4. 1754. | TYPE: Non designatus. | |
| Fortunella | Fortunella Swingle, J. Wash. Acad. Sci. 5: 167. 1915. | TYPE: Fortunella margarita (Loureiro) Swingle 1915. (Citrus margarita Loureiro 1790.) | |
| Limon | Limon Miller, Gard. Dict. Abr., ed. 4. 1754. | TYPE: = Citrus Linnaeus 1753. | |
| Oxanthera | Oxanthera Montrouzier, Mem. Acad. Roy. Sci. Lyon, Sect. Sci., ser. 2. 10: 186. 1860. | TYPE: Oxanthera fragrans Montrouzier | |
| Papeda | Papeda Hasskarl, Flora 25(2, Beibl.): 42. 1842. | TYPE: Papeda rumphii Hasskarl | |
| Poncirus | Poncirus Rafinesque, Sylva Tellur. 143. 1838. | TYPE: Poncirus trifoliata (Linnaeus) Rafinesque (Citrus trifoliata Linnaeus) | |
| Pseudaegle | Pseudaegle Miquel, Ann. Mus. Bot. Lugduno-Batavi 2: 83. 1865. | TYPE: Pseudaegle sepiaria (de Candolle) Miquel (Aegle sepiaria de Candolle) | |
| Sarcodactilis | Sarcodactilis C. F. Gaertner, Fruct. Sem. Pl. 39. 1805. | TYPE: Sarcodactilis helicteroides C. F. Gaertner 1805. | |
| X Citrofortunella | X Citrofortunella J. W. Ingram & H. E. Moore, Baileya 19: 169. 1975. | TYPE: Citrus Linnaeus 1753 X Fortunella Swingle 1915. |