| 1 |
Leaves pinnatilobed or pinnatipartite
|
(2)
|
| 1 + |
Leaves coarsely serrate or serrulate
|
(3)
|
| 2 (1) |
Mid leaves pinnatilobed, petiole base subclasping; capitula 12-15 mm in diam., in dense corymbiform synflorescences.
(1)
|
E. aegyptiaca
|
| 2 (1) + |
Mid leaves pinnatipartite, petiole base not clasping; capitula 6-10 mm in diam., in short, narrow, paniculiform synflorescences.
(2)
|
E. blinii
|
| 3 (1) |
Annual or biennial herbs, taproot fusiform
|
(4)
|
| 3 (1) + |
Perennial herbs, rhizome or caudex woody
|
(5)
|
| 4 (3) |
Stems densely villous, densely short-stipitate viscid glandular; mid cauline leaves shortly petiolate or subsessile, not clasping; capitula 3.1-7.9 mm in diam., in broadly paniculiform synflorescences; ray florets 1/5 or less as long as style.
(3)
|
E. leucantha
|
| 4 (3) + |
Stems scabrous (below) to villous, eglandular; mid cauline leaves sessile, base subclasping; capitula 7.5-11 mm in diam., in glomerate or dense corymbiform synflorescences; ray florets 1/2 or less as long as style.
(4)
|
E. japonica
|
| 5 (3) |
Capitula 4-5 mm in diam.; phyllary margin narrowly scarious; cauline leaves oblong-lanceolate to lanceolate, coarsely serrate; disk floret lobes glandular.
(5)
|
E. perennis
|
| 5 (3) + |
Capitula 6-7 mm in diam.; phyllary margin ± broadly scarious; cauline leaves linear-oblanceolate to linear, sparsely serrulate or subentire; disk floret lobes hairy at apex.
(6)
|
E. muliensis
|
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