Definition of "quadrantly"

That is, we assemble two of its quadrantly folded great circles to form one hemisphere and four of the quadrantly folded great circles to form the other hemisphere.

1982, R. Buckminster Fuller, Synergetics: Explorations in the Geometry of Thinking, page 465

Vegetatively it is the nearest to H. translucens with its oblong-lanceolate leaves, with the margins and keel beset with pellucid teeth, but it differs and is characterised by the greyish-black quadrantly positioned globose flowers; […]

1985, Charles L. Scott, The Genus Haworthia (Liliaceae): A Taxonomic Revision, page 80