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|Family: Malvaceae||View Description||Dichotomous Key|
|Genus: Gossypium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Gossypium hirsutum L.
Habit: Annual to perennial herb, [shrub], generally widely branching, +- stellate-hairy. Stem: erect, 0.5--1(2) m. Leaf: blade 4--10 cm, cordate, lobes 3--5, shallow, lobes widely ovate, acute to acuminate; stipules 0.5--2 cm, generally curved. Inflorescence: flowering stalks 2--4 cm; bractlets 2--4.5 cm, each above a nectary. Flower: generally <= leaves; calyx 5--6 mm; petals 2--5 cm, cream or pale yellow, basal dark spot present or not; stamen tube +- 1.5 cm, +- = style. Fruit: 2--4 cm, widely ovoid to +- spheric, 3--5-celled, glabrous. Seed: several per chamber, 8--10 mm, +- hidden by long hairs. Chromosomes: 2n=52.
Ecology: Uncommon. Disturbed places, roadsides, agricultural land; Elevation: < 100 m. Bioregional Distribution: ScV, DSon (sporadic); Distribution Outside California: southern United States; originally tropical America, especially Mexico. Flowering Time: Apr--Oct Note: Cult worldwide, occasional escape, evidently not naturalized in California.
eFlora Treatment Author: Paul A. Fryxell
Jepson Online Interchange
Previous taxon: Gossypium
Next taxon: Herissantia
Citation for this treatment: Paul A. Fryxell 2016. Gossypium hirsutum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=27214, accessed on May 27, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 27, 2016.