A Grammatical Dictionary of Botanical Latin

dimidio (adv.): by half; often used with comparatives; not to be confused with the abl. sg. of dimidium (i.e. ‘dimidio’);

- dimidio longior, longer by one half; tenuior dimidio, thinner by one half.

- pedunculis folio dimidio brevioribus (DeCandolle), with the peduncles shorter than the leaf by half.

- staminibus perigonio dimidio brevioribus pistillum subaequantibus (Boissier), with the stamens shorter than the perigonium by half, nearly equaling the pistil.

- [alga] ramenta rachide vix dimidio tenuiora (Agardh), the ramenta hardly thinner by half of the rachis.

- carina vexillo et alis plus dimidio brevior, the keel shorter than the vexillum and wings by half.

- antherarum calcare longiore loculum dimidio superante (Mueller), with the spur of the anthers longer, overtopping the locule by a half [i.e. by 50 percent].

- [algae] articuli fere omnes aequali longitudine, diametro multo breviores apparent et in tenuiore parte dimidio breviores (Agardh), nearly all the the articuli with an equal length, they appear much shorter in diameter and in the thinner part shorter by half.

- [algae] cellulae admodum laxae, prismatico-polyedrae, dimidio longiores quam crassae non in eodem plano disposilae, centrum occupant (Agardh), cells extremely lax, prismatic-polyhedrous, longer than thick by a half, not arranged in the same plane, occupying the center.

- [moss] dentes thecae diametro dimidio breviores, (C. Mueller), the teeth shorter than the diameter of the theca by one half.