1	"Outer and inner florets yellow; appendages on style branches usually longer than the stigmatic area"	2
1	"Outer and inner florets usually different in colour; appendages on style branches shorter than the stigmatic area (except in Aster)"	4
2	"Pappus of few stiff scales; capitula large"	Grindelia
2	"Pappus of many fine bristles; capitula small"	3
3	"Ray florets usually bright yellow; capitula usually less than 5 mm across"	Solidago
3	"Ray florets usually creamy yellow; capitula to 1 cm across"	Solidaster
4	"Achenes strongly compressed and/or winged; receptacle conical, hemispherical or spherical; involucral bracts more or less equal"	5
4	"Combination of features not as above"	8
5	"Achenes compressed but not winged; pappus absent; style branches short, oblong"	Bellis
5	"Achenes usually winged; pappus present or rarely absent; style branches long, linear"	6
6	"Pappus of 1 row of minute bristles, much shorter than body of achene, rarely reduced to a minute rim or absent"	Brachyscome
6	"Pappus of long bristles, spines or scales or a combination of these, usually some element as long as or longer than achene"	7
7	"Leaves more or less entire; capitula in panicles"	Boltonia
7	"Leaves usually toothed, lobed or divided, rarely entire; capitula usually solitary, sometimes a few together in cymes"	Calotis
8	"Involucral bracts in 3 rows, the outer ones large and leaf-like; receptacle sometimes with short scales"	Callistephus
8	"Involucral bracts not as above; receptacle always without scales"	9
9	"Plant a small bushy shrub with ericoid leaves; capitula diskoid"	Chrysocoma
9	"Plant not as above; capitula usually radiate, rarely diskiform or diskoid"	10
10	"Pappus absent"	Lagenophora
10	"Pappus present on at least some achenes"	11
11	"Anthers with short caudate or rounded basal appendages"	12
11	"Anthers without basal appendages"	13
12	"Plant a woody shrub or small tree; leaves all along stems, not overlapping"	Olearia
12	"Plant a perennial herb, sometimes woody at base; leaves mostly in a basal rosette, if along stems then dense and overlapping"	Celmisia
13	"Ray florets numerous, in 2 or more rows"	Erigeron
13	"Ray florets usually in 1 row"	14
14	"Pappus of free or basally joined scales"	Kalimeris
14	"Pappus of bristles"	15
15	"Pappus of 1 series of bristles; ray florets curving under at night"	Felicia
15	"Pappus of more than 1 series of bristles; ray florets not curving under at night"	16
16	"Appendages on style branches longer than stigmatic area"	Aster
16	"Appendages on style branches shorter than stigmatic area"	Erigeron