Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
1 Trichomes at the tips of the receptacular bracts milky white, opaque, the head therefore appearing gray to white, obscuring the brown color of the bractlets. | |
1 Trichomes at the tips of the receptacular bracts translucent, the head therefore showing the brown color of the bractlets. | |
4 Leaves 2-3 cm long; head reddish- or dark brown, usually elongate-cylindric; carpels 3 |