CHAPTER II
STEMS
Herbaceous stems 233 Cross-section, spigelia stem 233 Ruellia stem 235 Powdered horehound 237 Powdered spurious horehound 237 Insect flower stems 241
##
STEMS
Herbaceous stems 233 Cross-section, spigelia stem 233 Ruellia stem 235 Powdered horehound 237 Powdered spurious horehound 237 Insect flower stems 241
##