(A) Scolex containing four round suckers and a rostellum
armed with two alternating crowns of hooks (400 [micro]m).
It has scolex with hooks and suckers and an armed rostellum
. The body is termed as proglottids arranged in a linear series.
The pollen of the vanilla flower is covered by an anther and the stigma is protected by a covering shield, the rostellum
. Before the pollen can be placed on the pistil, the rostellum
must be lifted.
"A membrane called the rostellum
separates the flower's anther from the stigma making self-pollination impossible," explains the longtime curer and exporter.
The specimen possessed a rudimentary rostellum
, a distinguishing characteristic that, according to Rodgers (1941), separated this species from two similar North American species, Anonchotaenia globata and A.