Botany · Ch 4 — Reproductive Morphology
Anther attachment
Anther attachment
Anther attachment describes exactly how the filament joins onto the anther. A basifixed (innate) anther has its base attached directly to the tip of the filament, as in Brassica and Datura. A dorsifixed anther has the filament's apex attached to the anther's dorsal (back) surface, as in Citrus and Hibiscus. A versatile anther is attached to the filament only at its midpoint, letting the anther swing or rock freely - typical of grasses, which aids efficient pollen release in wind pollination. An adnate anther has filament tissue running continu …
What this figure shows. Four labelled panels, each showing an anther and its filament: (A) Basifixed - the filament tip meets the exact base of the anther (Brassica, Datura). (B) Dorsifixed - the filament tip meets the back (dorsal) surface of the anther, part-way up (Citrus, Hibiscus). (C) Versatile - the filament touches the anther only at its midpoint, so the anther can pivot freely (grasses). (D) Adnate - the filament tissue runs continuously along the whole length …