Vegetative key to the families

Vegetative Key Vegetative key to the families

LATEX (milky white or yellow) present in stem and leaves

Herbs

Either; leaves all basal or basal and cauline; or, all cauline and exceeding 5 cm long

Leaves glabrous or with prickly hairs on the blades, c. 10 cm wide, the petioles not bristly-hairy nor the leaves mottled with yellow (Sylibum, tribe Lactuceae) Asteraceae

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Involucral bracts of the female heads or of the outer florets enclosing the fruit(s) at maturity and forming a burr (Fig. 42)

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Burr not formed around the fruits at maturity