1	"Seeds with brownish hairs (fuzz) only; plants native, growing in dry bushland"	2
1	"Seeds with long white cottony hairs (lint); plants cultivated, sometimes escaping, usually on clay soils"	6
2	"Leaves coarsely dentate; epicalyx bracts deeply divided into long linear lobes"	"Gossypium trifurcatum"
2	"Leaves entire or 3-5-lobed, not dentate"	3
3	"Leaves deeply 3-5-lobed, the lobes constricted at the base; epicalyx bracts laciniate"	"Gossypium stocksii"
3	"Leaves entire or shallowly 3-lobed with trinagular lobes not constricted at the base; epicalyx bracts entire or dentate"	4
4	"Epicalyces and calyces not gland dotted; at least some epicalyx veins anastomosing and not reaching a margin; capsules 5-valved"	"Gossypium brocchettii"
4	"Epicalyces and calyces dotted with dark glands; all epicalyx veins reaching the margins; capsules 3-4-valved"	5
5	"Capsules 13-15 mm long, with 2 seeds per cell"	"Gossypium vollesenii"
5	"Capsules up to 11 mm long, with 1 seed per cell"	"Gossypium somalense"
6	"Teeth of epicalyx bracts usually less than twice as long as wide; leaf lobes usually constricted at the base; seeds difficult to separate from the lint"	7
6	"Teeth of epicalyx bracts usually at least 3 times as long as wide; leaf lobes usually broadest at the base; seeds easily separated from lint"	8
7	"Epicalyx bracts with 4-6 teeth per side; capsules more or less rounded, almost smooth"	"Gossypium herbaceum"
7	"Epicalyx bracts with 1-3 teeth per side; sapsules usually tapering at the tip, densely pitted with conspicuous glands"	"Gossypium arboreum"
8	"Calyx tubes about 10 mm long; middle leaf lobes longer than wide; seeds, after removal of the lint,  without fuzz except from a tuft at one end"	"Gossypium barbadense"
8	"Calyx tubes about 6 mm long; middle leaf lobes about as long as wide; seeds, after removal of the lint,  with fuzz all over"	"Gossypium hirsutum"