The epithet amplexicaulis means "stem-clasping", describing (in this case) the attachment of the leaves to the stem. You can see what is meant by amplexicaulis via the secondary photograph in the Kemper Center link below or via this image of Asclepias amplexicaulis.
'Firetail' red bistort or mountain fleece is an RHS Award of Garden Merit plant. For gardening info about this plant, visit the MBG's Kemper Center for Home Gardening.
Botany resource link: The blooming of Amorphophallus titanum at Brooklyn Botanic Garden, suggested by Karen V, a BPotD commenter.
Posted by: Erica Source