Home Flora of Pakistan
Tropicos Names Specimens References Projects Images
Home
Name Search
Families
Genera
Species
District Map
Grid Map
Inventory Project
Citrus L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenAfrican Plants, Senckenberg Photo GallerySearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font
 

Published In: Species Plantarum 2: 782. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: Most or all of the species are cultivated, derived from the native species of tropical and subtropical regions of SE. Asia. Because of its great economic importance, domestication, cultivation and hybridization of the species has led to many varieties and forms, thus providing taxonomic problems. The following account of the species is primarily based on the work of Tanaka & Swingle with modifications in the treatment of the varieties.

Tanaka has described over 100 species. A genus widely cultivated. 10 species have been described from Pakistan.


 

Export To PDF Export To Word
Evergreen, small trees or shrubs, often spiny. Leaves simple, alternate, glandular punctate, petiole winged or margined. Flowers perfect or staminate, solitary or clustered in axillary racemes. Calyx 4-5-lobed, glabrous or pubescent. Petals (4-) 5(-8). Stamens 4-10 times the petals, polyadelphous. Ovary 10-14-locular, ovules biseriate or collateral. Fruit a fleshy hesperidium, globose to mamillate-oblong to oblate, rind tight or loose, with oil glands. Seeds embedded in pulpy vesicles.
 

Export To PDF Export To Word Export To SDD
Switch to bracketed key format
1.Petiole wings less than 10 mm broad. Fruit 10 cm or less in diameter
2.Leaf imperfectly articulated to the petiole. Petiole inconspicuously winged
 Citrus medica var. acida
2.Leaf perfectly articulated to the petiole. Petiole narrowly winged
3.Spines absent or short. Rind easily separable from the fruit. Axis not hollow in fruit
4.Fruit 5-8 cm in diameter, rind usually rough and warty. Stamens more or less united into a tube. Flowers 1-few
 Citrus reticulata
4.Fruit c. 3 cm in diameter; rind smooth. Stamens not united into a tube. Flowers solitary
 Citrus madurensis
3.Spines always present. Rind not easily separable from the pulp vesicles. Axis hollow in fruit
5.Fruit ovoid or rounded, usually mamillate
6.Leaves small and narrow (3.5-6 x 1.5-2.8 cm), crenate. Ripe fruit greenish-yellow
 Citrus aurantiifolia
6.Leaves elliptic to ovate (6.5-10 cm), serulate. Ripe fruit yellow
 Citrus limon
5.Fruit rounded or subglobose, never mamillate
7.Flowers perfect and staminate. Stamens c. 35. Rind green or pale-yellow in ripe fruit
 Citrus limetta
7.Flowers perfect. Stamens 20-25. Rind orange in ripe fruit
8.Wings of petiole oblanceolate. Fruit with pulp sweet or subacidic when ripe
 Citrus sinensis
8.Wings of petiole obovate. Fruit pulp sharply acid
 Citrus aurantium
1.Petiole broadly winged; wings more than 10 mm broad. Fruit more than 10 cm in diameter
9.Midrib and veins pubescent. Pulp vesicles loosely packed. Seeds ridged
 Citrus grandis
9.Midrib and veins glabrous. Pulp vesicles closely packed. Seeds smooth
 
 
© 2024 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110
 Send feedback|Terms Of Use|API|Linking to Tropicos|FAQ|Additional Info