dorsiventral


Also found in: Dictionary, Thesaurus, Wikipedia.

dorsiventral

(dôr′sĭ-vĕn′trəl) or

dorsoventral

(-sō-)
adj.
1. Botany Flattened and having distinct upper and lower surfaces, as most leaves do.
2. Biology Extending from a dorsal to a ventral surface: dorsiventral muscles.

dor′si·ven′tral·ly adv.
References in periodicals archive ?
In the foliar study, all species have stomata confined to the lower surface, hairs stellate, dorsiventral mesophyll, mucilage canals and lingering vascular sheaths.
Mesophyll was dorsiventral, with 1-2 layers of palisade parenchyma.
The mesophyll is dorsiventral with a palisade parenchyma with periclinally elongated cells facing the adaxial surface, filling about half of the mesophyll (Figure 2A).
Once dorsiventral and proximodistal domains have been established, the induction of marginal growth and complexity (in compound leaves) begins.
Las especies de la seccion Collandra se reconocen por ser lianas con vastagos vegetativos, los cuales exhiben una orientacion dorsiventral y una marcada anisofilia entre las hojas de un mismo nudo; la hoja mas grande de cada par usualmente tiene forma oblanceolada y muestra diversos patrones de manchas rojas por su cara abaxial de acuerdo con la especie, en contraste, la hoja pequena es tan reducida que aparenta ser una estipula; los sepalos subiguales tienen formas variadas; la corola tubular frecuentemente es subventricosa, con limbo subactinomorfo o marcadamente bilabiado (Wiehler, 1973, 1995).
The three Eucalyptus clones studied presented dorsiventral and amphistomatic leaves, with the adaxial epidermis showing a reduced number of stomata which where generally restricted to the area around the midrib.
Simetria dorsiventral, a veces ligeramente asimetricas en la base.
The eophyll blade is hypostomatous and has dorsiventral mesophyll, with a funnel-shaped adaxial layer (Figure E).
Plantas hasta de 30 cm, con tallos rastreros semisubterraneos, foliosos; tallos erectos, foliosos, de simetria dorsiventral y anisofilos.