dextrorse


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Related to dextrorse: dextrose

dextrorse

[′dek‚strȯrs]
(botany)
Twining toward the right.
References in periodicals archive ?
Calycine colleters mostly in alternisepalous groups or in continuous ring, more rarely solitary and episepalous; corolla usually divided into narrow lower tube and expanded upper throat, mostly infundibuliform or tubular campanulate, more rarely tubular or salveriform; corolla-lobe aestivation dextrorse; distinct corona usually absent; stamens mostly inserted at base of throat; lignified guide rails long, well developed; style head with neither basal collar nor upper wreath, with 5 arms, which usually project from lower part (arms forming long ridges for most of length of style head in Mandevilla and Macrosiphonia) to which anthers are attached; stigmatic zone confined to re gion on underside or lower region of style head.
Calycine colleters often one, episepalous, or several and spread across base of sepal, rarely absent; corolla salveriform, infundibuliform, tubular campanulate, campanulate (rotate in Parsonsia, Artia, Ecua, and Thernardia); corolla-lobe aestivation dextrorse, rarely valvate; stamens mostly inserted in upper part of corolla tube (near base in Parsonsia, Artia, Ecua, Pottsia, and Thernardia); anthers often partially to almost completely exserted, with large, lignified guide rails, attached near base of style head; style head cylindrical to narrowly fusiform, broadest and with (usually well developed, often membranous) collar at base and sometimes upper wreath as well; stigmatic zone located on underside of style head beneath collar.