This is a series of posts on interesting and unusual words and phrases.
The first set of words are adjectives that describe a shape and are often used in botany, mineralogy, and describing artistic forms.
The word for today is calathiform: of the shape of a basket, from the Latin, calathus. Hemispherical or concave, like a bowl or cup.

Twelve flowers on three inflorescences on a 33-leaf plant 19-cm high and 14-cm wide mounted vertically covering the front of a small barkless log; leaves elliptical, entire, 3.5 cm wide by 5.0 cm long borne singly on cylindrical pseudobulbs 0.4 cm wide by 1.0 cm tall; sepals, petals and lip pure white; rolled dorsal sepal projects forward over column; lip calathiform (cup shaped); column white, brown on superior surface, black spot apically; substance firm; texture crystalline; strongly fragrant, reminiscent of cinnamon; recognized as a lovely alba form of the species; https://www.aos.org/sitf-blog/meiracyllium-trinasutum-var-album-2023-04-30.aspx
