Simplex
/SIM-pleks/🏷️ Taxonomy● Basic
A form epithet with two related meanings: either describing an unbranched stem, or distinguishing a single-flowered form from double-flowered relatives. In both cases it implies an uncomplicated, straightforward structure — simple rather than compound or elaborate. Appears as simplex (both genders).
Etymology
From Latin simplex, meaning "simple," "single," or "without folds," from semel (once) + plicare (to fold).
Example
“Cimicifuga simplex (simple bugbane) has unbranched flower spikes in contrast to the branched C. racemosa, and Leucanthemum vulgare — the simple daisy — contrasts with double-flowered cultivars the simplex epithet distinguishes.”