A Grammatical Dictionary of Botanical Latin

dimerus,-a,-um (adj.A), dimericus,-a,-um (adj.A): dimerous, dimeric “(Flower). Having all the parts in twos” (Fernald 1950); with two members in each part or circle” (Jackson); with parts in twos [> Gk. dis, two + meros, a share]; see -merus,-a,-um (adj.A), -mericus,-a,-um (adj.A): -merous;

- Ranunculaceae a Papaveraceis differunt imprimis floribus raro dimeris (B&H), the Ranunculaceae differs from the Papaveraceae primarily by the flowers rarely with parts in twos.

- SANGUINARIA, Linn., genus Papaveraceum, primo intuitu Berberideis palmatifoliis affine, abunde differt gynoecio dimero syncarpico (B&H), Sanguinaria, Linn., a Papaveraceous genus, at first glance related to the palmate-leaved Berberideae, abundantly differs by the dimeric syncarpic gynoecium.

- DICRANOSTIGMA a Stylophoro non differt nisi gynoecio dimero neo 3—1-mero (B&H), Dicranostigma does not differ from Stylophorum except by the dimerous gynoecium not 3-1-merous.

- gynoecium dimerum occurrit, etsi rarius, etiam in Slylophoris Americanis.(B&H), a dimerous gynoecium occurs, even if more rare, also in the American Stylophorum [sc. species].

- herba (v. suffrutex ?), habitu Waltheriae, a qua nisi gyncecio dimero non differt (B&H), an herb (or subshrub?), with the habit of a Waltheria, from which it does not differ except by the dimerous gynoecium.

Ephedranthus dimerus has petals 4, in 2 whorls of 2 petals.