Quarter round moulding, often combined with fillets, eg in a window mullion; it is used of late 16th/17th century mouldings of classical derivation.
see Quarter Round
31 - Chamfers Stops and Mouldings
a) Chamfer b) Steep chamfer c) Hollow chamfer d) Scroll stop with notch e) Diagonal cut stop
f*) Draw or run-out stop g) Straight cut stop h*) Ovolo moulding
i) Step stop j) Scroll (cyma or ogee) stop k) Sunk (reserved) chamfer
l) Scroll stop with bar m) Pyramid or broach stop
n) Vase stop
Mouldings:
i) Scroll or ogee (cyma recta) ii) Scroll or ogee (cyma reversa) iii) Double ogee iv) Hollow (Cavetto; on mullion) v) Ovolo vi) Quarter round vii) Hollow viii) Wave ix) Angle bead (Bowtell) x) Flush bead xi) Half round (Torus) xii) Plain roll xiii) Roll and fillet xiv) Pointed roll xv) Keeled roll xvi) and xvii) Bead mouldings on panels