Contains 1 accepted taxa overall.
Characteristics
With a long history of cultivation and hybridizations, the application of taxonomy is complex in the evolution of the genus (Mabberley 2004; Curk et al. 2016). Fortunella and Poncirus are probably best treated as synonyms of Citrus (Garcia-Lor et al. 2013; Carbonell-Caballero et al. 2015; Oueslati et al. 2016; Mou et al. 2017).
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 trifoliata | Trifoliate Orange, Hardy Orange |
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 |
|---|---|---|---|
| No synonyms found. | |||