A Grammatical Dictionary of Botanical Latin

isomerous, “equal in number; an isomerous flower is one all whose parts are equal to each other in number” (Lindley); “1. having the same elements in the same proportions, but with different properties; 2. having members of successive cycles equal in number, as the petals and sepals” (Jackson); with equal parts, i.e. with the number of parts in one floral whorl the same as in another whorl: isomericus,-a,-um (adj.A), isomerus,-a,-um (adj.A) + dat. or cum + abl.; opp. anisomerous, q.v.;

- stamina petalis isomera v. saepe numero duplo, rarius oo, perigyna v. epigyna, nunc hypogyna, erecta v. patentia (B&H), petals the same [number of parts with] the petals or double in number, very rarely [indefinite], perigynous or epigynous, sometimes hypogenous, erect or spreading.

- stamina sepalis alterna et isomera in Colobantho (B&H), stamens alternate to the sepals and isomerous in Colobanthus.

- styli et capsulae valvae sepalis isomeri et alterni (B&H), the styles and valves of the capsule isomerous with the sepals and alternate.

- stamina sepalis isomera et alternantia (B&H), the styles and valves of the capsule isomerous to the sepals and alternate.

- genus differt ab Arenariis tenuifoliis imprimis stylis cum sepalis isomeris, a Spergula stipularum absentia (B&H), the genus differs from the Arenaria tenuifolius [sc. plants] primarily by the styles isomerous with the sepals, from Spergula by the absence of the stipules.

- ordo parvus, Hypericineis affinis, differt habitu, stipulis, floribus a sepalis usque ad stylos isomeris (B&H), a small order, related to the Hypericineae, it differs by the habit, stipules, by the flowers isomerous to the sepals to the styles.

- Crassulaceis convenit imprimis floribus per omnes partes isomeris (B&H), it approaches the Crassulaceae primarily by the flowers isomerous throughout all its parts.

- stamina definita petalis isomera in Reyschia (B&H), the stamens definite [i.e. in number], isomerous to the petals in Reyschia.

- stamina petalis isómera v. duplo v. rarius triplo pluría ad basin tori inserta, alterna saepe longiora (B&H), the stamens isomerous with the petals or double or more rarely three times more, inserted at the base of the torus, alternate, often longer.

- sépala et pétala fere semper libera, isomera, coriacea et saepissime flava (B&H), the sepals and petals almost always free, with equal parts, leathery and very often yellow.

- stamina lobis corollae isomera (B&H), the stamens [with the same number of parts] to the lobes of the corolla.

- stamina lobis corollae isomera v. iis duplo plura (B&H), stamens isomerous with the lobes of the corolla or two times more than these.

- a Scrophularineìs differunt floribus saepius regularibus, staminibus corollae lobis isomeris (B&H), they differ from the Scrophularineae by the flowers more often regular, by the stamens isomeris to the lobes of the corolla.