FIGURE 2 in Criscianthus, a new genus of Eupatorieae (Asteraceae) with a key to members of the tribe in Africa

FIGURE 2. Phyllary, leaf, and fruit morphology and anatomy of Criscianthus zambiensis. A. Upper part of a phyllary of the involucre showing the caudate apex. B. Leaf transection showing the bifacial symmetry, with one hair sunken in the epidermis and the position of secretory ducts close to the vein (arrows). C. Detail of secretory duct in transection, note its schizogenous nature evidenced by the two rows of epithelium surrounding the space with dark content. D. Modified twin hair in cypsela exclusive of Criscianthus, with two basal hair cells diverging at the apex and a third, long cell placed in a right angle at the point of divergence of the two basal cells. A–D from Richards 18908 (US).