subapical segment

Even small, subapical segments of dodder (C. reflexa), incubated in glass dishes, can produce haustoria when treated with cytokinin.

Gibberellin, shown to be necessary for continued growth of dodder vine tips in aseptic cultures, also interacts with cytokinins and auxins in the growth of subapical segments; it augments their effects.

However, its bell-shaped (although not conical) apophyses (outgrowth), the existence of its foot-cell like hyphal segment, rhizoids produced opposite to the sporangiophores upon cultivation on plain agar, the darker and thicker subapical segment, and inability to sporulate on routine culture media help in distinguishing Apophysomyces elegans.