Contains 2 accepted taxa overall.
Characteristics
Classification
Citation
GOSSYPIUM Linnaeus, Sp. Pl. 693. 1753.
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TYPE: Gossypium arboreum Linnaeus Lectotypified by Britton & Millspaugh, Bahama Fl. 273. 1920.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Gossypium barbadense | Sea-island Cotton, Egyptian Cotton, Pima Cotton, Extra-long-staple Cotton | |||
| Gossypium hirsutum | Upland Cotton |
Identification Key
1. Leaf blades shallowly to moderately deeply lobed, the lobes acuminate and usually broadest at their base; bracts of the involucel 5-19-laciniate, free; tetraploid (subgenus Karpas)
2
1. Leaf blades moderately to deeply lobed, the lobes acute to acuminate and usually narrowed or constricted at their base; bracts of the involucel entire, 3-7-laciniate, or 5-13-dentate, free or sometimes connate basally; diploid (subgenus Gossypium)
3
2. Stipules 1-5 cm long; leaf blades with 3-7 lobes, the central lobe ovate to lanceolate and usually >1.5 times as long as wide; bracts of the involucel 5-17-laciniate, the teeth acuminate from the base, separated by rounded sinuses; calyx usually truncate, to 10 mm long (excluding teeth); petals usually yellow at anthesis with a reddish or purplish basal spot; fruit usually with 3 locules, narrowly ovoid, mostly elongate, pitted; cultivated
2. Stipules 0.5-1.5(2) cm long; leaf blade with 3-5 lobes, the central lobe triangular to ovate and usually 1-1.5 times as long as wide; bracts of the involucel 3-19-laciniate, the teeth triangular and acute or lanceolate and acuminate distally, separated by mostly acute sinuses; calyx truncate or with acute lobes or long-acuminate teeth, usually <6 mm long (excluding teeth); petals cream to pale yellow at anthesis, with or without a dark reddish spot at base; fruit with 3-5 locules, ovoid or subglobose (rarely elongate), smooth; native and cultivated
3. Involucel bracts entire or 3-7-laciniate, enclosing bud, sometimes basally connate; petals usually yellow at anthesis with a reddish or purplish basal spot, sometimes white or flushed purplish or basal spot absent; fruit elongated, flaring widely, releasing cotton; cultivated
3. Involucel bracts 5-13-dentate, often flaring, usually free; petals yellow at anthesis with a reddish or purplish basal spot; fruit subglobose, not flaring on dehiscence (cotton removed with difficulty); cultivated
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||